Science Fair Project Ideas

Here are just a few ideas that I have collected over time and from the Internet. Possibly some of these will get you going in the right direction on your project.

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Behavioral	Botany	Biochemistry	Chemistry	Computer	Earth & Space	Engineering
Environmental	Math	Medicine	Microbiology	Physics	Zoology
*(Click Here for Director's Choice Ideas)*

Behavioral & Social Science

A study of territoriality in mice
A study of the cleaning habits of mice
Observation of conditioned responses in different animals
Learning and perception in animals and humans
Studies of memory span and memory retention
Worker efficiency vs. number of hours worked: Do long hours really pay off?
A study of the relation between physical exercise and learning ability
Is audio or visual information better remembered
Which gender, grade, and ethnicity have the most stress?
Study the "comfort zone" different people have, how the comfort zone varies between sexes, and between friends and strangers
Analysis and Documentation on Color's Effects on Emotion Between Genders
Determine if there is a difference between various groups in overcoming visual illusions to determine what is really there
Can spatial skills be improved with practice?
The Effect Of Birth Order On The Personality Types Of Teenagers
See if subliminal messages have an effect on one's behavior and decisions
Are people who can taste PTC strongly would be more likely to dislike broccoli than those who cannot taste it at all
Which hand is more sensitive and how does age/gender/health habits affect that sensitivity?
What effect does being scared have on blood pressure, and does age/gender/health habits affect this situation?
What effect does eye color have on the ability to distinguish between colors in low light?
Determine if people respond more quickly to visual or auditory stimuli.
Determine if a person's reading comprehension is greater when reading written material on paper or from a computer screen.
Determine whether elementary grade students comprehend directions better with visual, aural, or typed directions.
Can people really taste the difference between fat free and regular foods? Does age, gender, or other factors affect the ability to taste the difference if there is one?
Which of the three senses-- sight, hearing, or touch--produces the quickest reactions in humans.
Determine if males and females have different abilities in estimating an object's size
Determine how well people identify foods using only the sense of smell
Determine if people can identify the original scents used to make homemade fragrances and perfumes
Determine if smells, odors or scents affect peoples' mood. If so, how?
How does the group affect our personal behavior, and how can our personal behavior affect the group?
Does age have any influence in deciding what color car to buy?
Determine the range of response of differing human ages to the Stroop Effect.
Teenage values: Are they different between males and females?
A study of animal phosphorescience and other biolumincescences
Does response time deteriorate with age? If so, by how much?
Do TV stations increase the volume of advertisements in order to get your attention and influence your buying habits?
Can a person recognize the sex of another people from pictures of bare feet?
Is there such a thing as "sidedness" that goes beyond left-hand, right hand? Is there also a right foot, left foot, right eye, left eye, etc.?
Do horoscopes work or are they merely entertainment?
Compare the suggestibility of males vs. females in copying actions of those around them (sniffling, scratching, coughing, yawning, etc.)?
Devise a test to measure peer pressure and then examine how well it works among your friends.
Can we tell the difference between genetic traits and behavioral traits? (There's a lot of new research going on in this area.)
Research what type of facial expressions babies can mimic and how young they start to mimic them. (A new baby brother or sister would be helpful)
Does gender affect teenagers' planned career choices?
Compare rewards vs. punishment as methods of controlling behavior. Are there better methods for controlling behavior?
Praise vs. performance - Does boosting students' self-esteem lowers their grades on tests or improve upon them?
Compare age groups as regards concepts of right and wrong. Are there absolute rules or do rules depend upon the situation and circumstance?
Does parental occupation and/or financial status influence stated student goals as to college preferences or occupational goals?
Do males and females of different age groups minds' react to color and words at different speeds?
Do boys see different optical illusions than girls?
Does Age Affect Hearing
Can Goldfish Learn To Eat From A Certain Color Container By Using Operant Conditioning?
The Effect Of Mental And Physical Stimulation On The Learning Ability Of Mice
The Impact Of Sleep Deprivation on Mood And Cognitive Performance In Three Age Groups
Sound To Sight: Study Of Peoples Cognitive Responses To Mozart's Music
Comparison Of Stress In Reproducing Wild Type And "eyeless" Drosophila Melanogaster
Effects Of Coping Mechanism Type On Physiological Stress Response
Do Your Fears Change With Age?
Effects Of Contrast And Luminance On Magnocellular-Defined Boundaries
Do Ambidextrous People Have an Advantage In Cognitive Hearing?
Are Americans Ready For Mom To Be President? A Study Of Gender And Politics
Gender Effects On Story Comprehension And Preference
Does Age Affect a Child's Perception Of Time?
The Effect Of Sleep Restriction On The Cognitive Function Of Elementary And School Children
Are People More Attracted Towards Teddy Bears With Childlike Features Than Towards Teddy Bears That Look Like Real Bears?
Patterns, Pressure, And Preference: The Influence Of Social Pressure And Mathematical Patterns On Musical Preference In Adolescents.
The Effects Of Caffeine On The Short-Term performance Of High School Athletes
Does Different types of Lighting Affect Academic Performance?
Effects Of Allelochemicals In Insect Behavior And Physiology
Training methods to improve the detection of deception by adolescents.
Media violence: its impact on adolescents and parents.
Does smell affect memory?
Music's affect on concentration.
Effects of weather on human emotions
A study of reading retention between computer and written material.
How Nicotine Affects Caenorhabditis elegans Behaviorally Neurotransmitter-Amphetamine Interactions in Rats
The Effects of Age Progression on Information Processing
Reaction Time in Serial Learning: A Re-examination of the Ranschburg Effect
Reading and remembering with different colored paper - which works best?
Do babies prefer a familiar or unfamiliar toy?
Working vs. non-working parents: effects on kids' grades.
Effect of student seating on academic performance.
Does the level of noise affect eye-hand coordination?
Assertiveness: are there differences between junior high boys and girls?
Does a blindfolded person walk in a circle? If so then why?
Does chewing gum affect students in a testing situation?
Audio memory vs. visual memory.
Are eye witness testimonies accurate?
Audio, Visual, and Kinesthetic Learning
Do Blind Fruit Flies Have A Superior Sense of Smell than Their Sighted Counterparts?
Does Sleep Affect Your Grades?
Effect of Location on Seasonal Affective Disorder (S.A.D.)
Talking on a cell phone while driving. Is it dangerous?
What strategies do pre-schoolers use to deceive people?
What are the affects of multiple washings on flame resistant sleepwear / clothing?

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Botany (Now called Plant Science)

How do different conditions affect the speed at which fruit and vegetables ripen?
How do different types of fertilizers affect plant growth?
What happens when you grow sweet potatoes next to other plants?
How do different treatments change how fast seeds sprout?
How close does a pesticide have to be to protect a plant?
What effect does seed size have on how well a crop like oats or wheat grows?
The effect of sound on plants
Does The Use of Vitamin B1 Reduce The Risk of Root Shock in Plants?
Plants in different environments (light intensity, color)
Experiment with hydroponics
Sugar level in plant sap at different times and dates
Use seedlings started from seed with three types of soil and different rates of fertilizer
Comparing types of artificial light on plant growth
Best conditions for mushroom production, growth of ferns
Transpiration rates for different plants and conditions
Sugar level in plant sap at different times and dates
Genetic variations across a Sansevieria leaf
Factors affecting seed germination (e.g. soil temperature, pH)
Root formation in cuttings versus lighting conditions
Factors affecting flowering
Study of sterility in plant hybrids (F1 and F2)
Comparison of different plant's ability to add humus to the soil
Factors affecting Nodule Formation in Legumes
What are the effects of watering plants with distilled water vs. non distilled water?
Can Paper Chromatography be Used to Identify Different Species of Plants
Can household compounds (e.g. tea) be used to promote good health in plants
Effects of cigarette smoke on the growth of plants
The effects of water impurities on plant growth
The effects of phosphates on aquatic plants
Does The Type Of Plant Life That Lives In The Soil Affect The Number Of Nematodes That Live There
Effect of mineral deficiencies on protein content in soybeans
The effect of excess salinity on plants
The effect of polarized light on plant growth directica
The effects of solar activity on plant growth
Tracing solar activity cycles in tree growth rings
Chitosan and its derivatives have plant protecting and antifungal properties (possibly use crawfish, shrimp, or crab shells. Which one would be better?)
The effects of electric fields on plants
The effects of magnetic fields on plant growth
Effects of magnetism on the size and frequency of blooms and fruits
Does magnetizing seeds before planting affect growth
The effects of X-Ray and other radiation on plants
The effect of music of varying types and duration on plants
Organic fertilizer versus chemical fertilizer
Manipulation of Vegetative reproduction in plants
Search for near vacuum environment tolerant plants
Germination - how monocots and dicots differ - the effects of heat, light, carbon dioxide, pH level, etc. on germination rate
Photosynthesis - factors affecting the rate of photosynthesis temperature, light intensity, water, carbon dioxide - part of light spectrum used in photosynthesis
Leaf - do the numbers and sizes of stomata vary with different plants - what happens if stomata are covered and why
Roots - how much water is used by different plants - what is the effect of temperature, sunlight, etc., on the use of water (transpiration) - how do different types of soils affect the ability of roots to anchor plants - what factors encourage root growth and what is the effect of water, oxygen, soil type, minerals on root growth
Plant growth - determine the effects of various nutrients, amounts of water, hours of sunlight, strength of weed killer, temperature, pollutants, pH levels on plant growth and crop yields - can plants live without oxygen, carbon dioxide - what percentages of various plants is water
The preferred pH level in the soil for various plants
Nutrition - plants and fertilizer
How to plants get nitrogen?
Why do plants grow towards light?
The effects of gravity on seed germination
How water moves through the plant
How plants reproduce and factors that affect the process
The effect of soil components and organic matter on growth of plants.
The effect of music of varying types and duration on plant growth
The effects of magnetic fields on plant growth.
The effects of phosphates on aquatic plants.
The effects of water impurities on plant growth
What happens when you grow sweet potatoes next to other plants
What happens to the way plants grow if there are no microorganisms in the soil?
Do onion root cells divide at certain times during a 24-hour period?
Can Water Hyacinths remove nitrates from waste water?
The relation between cotton fiber length and their strength.
A comparison between stored seed and seed germination.
Comparison of cotton growth in sandy loam and alkali soils.
Analysis of lawn seed germination at winter, spring, summer and fall temperatures.
Bean plant growth in various nutrient deficient soils.
Does the pyramid change the growth of plants?
Using radioisotopes to study uptake of plant nutrients
A study of the tumours produced in plants by agrobacterium tumifacieus
Does soil type change how well crops grow?
Show how the growth rate of some plants may change when exposed to higher than normal carbon dioxide gas
What type of water additive helps plants grow best?
Does the amount of water a plant receives affect how much water it gives off?
Do steroids affect plant growth?
Will the amount of light affect how fast a Venus Fly-Trap closes its jaws around an insect?
Which vegetables serve as the best conductors of electricity?
What are the effects of aspirin, vitamin C, calcium, and Benadryl on plant growth?
Investigating the effects of gravitational forces on plant growth.
What effect would freezing have on how well seeds sprout?
Does the depth a seed is planted affect its ability to sprout?
Examine phototropism, the study of why plants grow towards light.
What is the effect of gibberellic acid on plant growth/flowering/fruiting?
Where are there more stomata, the top or bottom of a leaf?
Is there a relationship between seed shape and the method of seed dispersal?
The Antimicrobial Effective Of Folk Medicines
What are The Factors Effecting The Transformation Of Crimson Clover?
Determining Whether Length Affects Grass Growth
What Are The Effect Of Salt On Different Varieties Of Carrots?
How Does Hydrogen Peroxide Affect Wheat Germination?
How Does Water Conservation Affect the Germination of Grass?
What are the effects of ant mound soil on the growth or bean seeds?
What are the effects of dryer lint on plant growth and soil?
How do different types of wood absorb water?
Which wood is the hardest and why?
Does the density of wood affect the time for a flame to burn through to the other side?

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Biochemistry

Can pigments from lichens be extracted for dyes?
An analysis of the pH of saliva of students at your school.
Analysis of reducing sugars in common foods
Analysis of reducing sugars in common foods
Does The Amount Of Fertilizer Change The Simple Sugar Content
Separation of blood components from cow's blood.
What esters are common in basic flavors?
Will artificial sweeteners replace sugar?
DNA extraction techniques from beef liver.
Comparison of the Effects of Inorganic Catalysts and Enzymes on Peroxide Decomposition
How do different conditions affect the speed at which fruit and vegetables ripen
What effects do different amounts of exercise have on the production of carbon dioxide in humans?
Compare the amount of protein in different brands of milk.
Is there a difference between plant and animal DNA?
Do different varieties of the same fruit have the same level of vitamin C?
How can we extract DNA from onions?
What Is the Effect of Heat on the Extraction of DNA from Fruit Flies (Drosophila) Larvae Cells
Drosophila Eye Pigment Chromatography
Restriction Enzyme Analysis of l DNA
Does Heteroplasmy in Mitochondrial DNA (mtDNA) Vary by Race
Do different varieties of the same fruit have the same level of vitamin C?
A study of the percentage of DNA (by weight) in different species
Factors affecting the enzyme's reaction rates
How can we test for the presence of starch?
Illustrate how a sewage plant could produce natural gas
Can you reproduce the effects of the commercially produced (Pomona's Universal Pectin) with homemade citrus pectin?
DNA related projects.
Paper Chromatography, what colored dyes are found in powdered drink mix and markers?
Nucleic Acids and Recombinant DNA projects.
How is calcium involved in muscle function and metabolism?
Acid-Base Behavior of an Amino Acid
The Effect of Various Household Chemicals on Hemoglobin Testing with Luminol
Isolation of Lysozyme from Egg White
Qualitative Analysis of Sugars
Isolation of Phosphatidylcholine from Egg Yolk
Qualitative Analysis of Lipids
Purification and Activity of Phospholipase D
pKa of a Buffer
Kinetics of Alkaline Phosphatase
A Modeling Experiment Demonstrating H-bonding of Purine and Pyrimidine Bases
DNA Computation Of a Subset Sum
Understanding the Mechanism Of Cytotoxicity Of Sphingosine and its Derivatives on Candida Albicans
The Occurrence Of The Putative Tr1 Taste Receptor In Mammals
Diabetes: The Carbohydrate Connection
The Role Of Nitric Oxide (NO) In The Proliferation Of Endothelial Cells
Effect Of Nerve Growth Factor On Sensory Neuron Growth And Survival
Magnetic fields and enzymes.
Is there an inheritance pattern in mitochondrial DNA?
Effect of Light on the Vitamin C Content of Juice
Effect of Temperature on Vitamin C in Orange Juice

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Chemistry

Effects of temperature on viscosity of oil, chemical reactions, Brownian movement, burning of different materials.

Everyday activities that illustrate chemical principles

Chemical reactions that produce energy or that require energy

Testing of consumer products- glues, stain removers, antiseptics, mouthwash, detergents, paper towels, making salt water potable, removal of pollutants

Effects of sunlight on rubber, ink, paper

Illustrate how hydrogen gas might be stored efficiently using carbon nanotubes

Demonstrate how liquid methanol could be made from natural gas

Effects of increased concentrations on the rate of chemical reactions

Compare the pH levels in mouths of various animals and humans at different times in the day

Compare the surface tension of various liquids

Dealing with chemical spills from industry. Are there better ways to mitigate the problem?

How Does Surface Temperature Above the Boiling Point Affect the Rate of Evaporation of Certain Alcohols

Analyzing snow and rain for pollutants; samples from different locations

Effects of temperature on density of gases

Understand how different physical properties and chemical agents affect microwave superheating of water

Build your own small liquid air generator. Show how pure nitrogen, oxygen, and other gases can be removed from the liquid air by a process known as fractional distillation

Effects of salt and other contaminants on rate of rusting

Growing crystals- factors that affect the rate and the size

Can you obtain water from ink, vinegar, milk?

What effects do different amounts of exercise have on the production of carbon dioxide in humans?

Analyze soil samples for their components, ability to hold moisture, fertility and pH

Does the amount of particle pollution vary with distance from a road, with location, with height. Determine types of particles found in pollution fallout

Catalysts- how they work and why; commercial applicants and problems

Determine the effect of different brands of detergents on surface tension

Fire extinguishers-principles of operation and factors affecting their efficient use

How do acids react with different metals under varying conditions

Identify different metals by the color of flame when they burn

Can you devise and experiment that will list metals in order of their activity, from the most potassium to the least active ore gold

Electroplating- the principles, how different metals can be used and the practical applications

Chemical Change and the factors that affect the rate such as heat. light and catalysts

Acid and basic solutions, how are they produced, how can they be modified; practical considerations in soil, lakes, food; acid or basic solutions around the house.

Factors affecting the making of glass.

The effects of salts on the freezing point of water and other liquids.

Techniques of fractional distillation of oil samples.

Testing the mineral concentrations in hard and soft water.

Investigation of pH variations of soils.

Can negative ions (anions) can be separated and analyzed with exchange resins.

Can light energy influence chemical reactions?

A study of acidity in different types and brands of milk

Effects of temperature on viscosity of oil, chemical reactions, Brownian movement, burning of different materials.

Testing of consumer products- glues, stain removers, antiseptics, mouthwash, detergents, paper towels, making salt water potable, removal of pollutants

Effects of sunlight on rubber, ink, paper

Effects of increased concentrations on the rate of chemical reactions.

Dealing with chemical spills from the industry.

Effects of salt and other contaminants on rate of rusting

Growing crystals- factors that affect the rate and the size

Can you obtain water from ink, vinegar, milk?

How do acids react with different metals under varying conditions

Identify different metals by the color of flame when they burn

Can you devise and experiment that will list metals in order of their activity, from the most potassium to the least active ore gold

Electroplating-the principles, how different metals can be used and the practical applications

Calcium magnesium acetate (CMA) as a deicer

Effects of drying times on the properties of glue mixtures

Effect of chlorine bleach on fabric strength

Chemical reactions that consume versus produce energy

Factors affecting an enzyme's reaction rate

What household material will put out fire the fastest?

What type of metal, steel, copper, or bronze, will rust faster?

Which hair coloring product has the greatest amount of lead acetate?

A Study Of Chromium In Cigarette Smoke

Atomic Absorption Spectroscopy

The Titration Of Air: The Determination Of Oxygen In Air

Can hydrogen be produced from waste aluminum?

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Computer Science

Study of accuracy of calculators
Studies of storage/retrieval techniques for computer systems
Handling of data transfer between 1/0 devices
Data manipulation and information management techniques and procedures
Applications in education using the computer as an education tool
Compiler design
Statistics and random number problems
Simulation of nonscience areas e.g. history, life or other planets
A programmable processing unit design, function and operation
Developing a video game
Pascal programming tools
Developing a program to write a new custom program
Use of computers in managing industrial processes
Illustrate how inkjet printing schemes could be used to fabricate inexpensive solar photovoltaic panels, printed onto glass
Using computers to help people do what they want to do
Search Engines: Which is the Best?
Life and Death of a Network Virus
The Durability of Floppy Disks or CDs
Can computers simulate a form of artificial life?
How can a computer be used as a time clock to keep track of time worked.
Determining which computer is the fastest for different kinds of programs.
Which factors most affect the operating speed of a computer?
Can a computer can be used as an educational tool?
Demonstrate how internet data can be used to predict the weather patterns in your home town.
Create a program that gives people information based on their birthday.
Which WWW search engine produces the most accurate results?
Show how computer programs can simulate astronomical events.
How do web pages work?
Create a program that quickly teaches the user how to program in BASIC.
Do computers or computer monitors generate radio signals?
Examine the effect of magnetic fields on recording mediums (tapes, disks, etc.)
Create a program that simulates intelligence, responding to a user based on what the user inputs into the program.
Can a computer program affect childrens' learning ability?
Demonstrate how examinations can be administered by computer and simultaneously graded.
Develop and demonstrate a program to predict a comet's orbital path.
Develop an advanced computer program designed to solve one of several problems in the mathematics of probability.
Develop a computer program designed to solve one of several problems in advanced mathematics.
Create a program which teaches the user a set of technical facts thorough the use of branched programmed learning methods.
How does the C programming language work?
Compare the speed/effectiveness of different programming languages in running the same program.
Develop a program which will determine the feasibility of takeoff and flight for an aircraft.
Develop a program to solve mathematical formulas.
Develop a program to recognize animal tracks based on their shape.
Can a computer program predict the future population of nations based on past population statistics?
Develop a medical program to identify common childhood illnesses based on the symptoms exhibited.
Exploring 3D Computer Graphics
Design A System Of Gatering, Sorting, Digitalizing, And Displaying Local Weather Conditions Via The Internet
The Role Of Spectral Peaks And Spectral Shape In Speech Recognition
Secure Encryption: How Safe Is Your Data?
Microstructure Of The Discrete Fourier Transform
Does Temperature Affect The Performance Of Computer Components?
Design A Computer Mouse Design For People Without Arms Or Hands.
Hacker protection.
Aid for finding the centroid of two dimensional rectangular shapes.
Computer-aided design and simulation of digital circuits.
Microcomputer programs for the blind.
Writing an Applesoft BASIC program that plays checkers.

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Earth & Space (Earth Science in Category of its own)

A study of solar flares through the sudden enhancement of atmospherics
The identification of elements in the solar and stellar spectra
Crystal growth rates versus solution strengths, temperature, etc
Observations of experimentally induced seismic waves
Is there a relation between sunspot cycles and earthquakes
Observations of geomorphic factors in the local areas
Fossil studies in limestone and other rocks
Sunlight- how do different surfaces affect the amount of sunlight reflected and absorbed? Design a method of measuring how much sunshine is available each day.
A study of phosphorescence as a tool for geologists
Do major earthquakes set off other fault areas in other parts of the world? Does the depth have any effect on other possible resulting quakes? Is there a period of the year when quake frequency is higher than the other times
Dew formation- how much is formed on a square meter for a period of time; account for variations
Comparison of the load bearing strength for different soils
Evaporation- which effects the rate of evaporation most- temperature, humidity, wind speed or other factors?
Frost formation- what must the temperature be to form first; what are the effects of humidity? What is the make-up of frost and dew?
Do Lost Pet Ads Predict Earthquakes
Are There Observable Relationships Between Air Pressure, Temperature, Wind Speed, and Current Weather Conditions?
A Comparison Of The Sun's Angle With Ozone & UVA & UVB On Different Surfaces
Heat Retention- does fresh water hold heat longer than salt water? How does water compare to land and what effect does this have on the weather? What factors affect the cooling of land?
Build a snow and rain monitor. Perhaps light from an infrared light emitting diode could used to detect the reflections off the rain drops and snow flakes
Build Your Own Seismometer and demonstrate how it works.
Observations of fluctuations in stream flow following rain
Study of air tides: phases of the moon versus barometric pressure
Changes in snow density and other characteristics with time
The factors affecting ice patterns on glass
Study of the relation between wind direction and temperature inversions
A study of small scale wind currents around buildings
Observations of local anomalies in the earth's magnetic field
Sky Color- account for differences in color at different times
Is cloud formation related to height, weather systems and temperature?
Study and record varying levels over the year in a body of water; account for differences and the results on the surrounding environment
How much is formed on a square meter for a period of time; account for variations
Does wind travel at same speeds and in same directions at different heights?
What must the temperature be to form first; what are the effects of humidity? What is the make-up of frost and dew?
Which effects the rate of evaporation most- temperature, humidity, wind speed or other factors?
Can you measure the speed and force of raindrops?-What is the effect on soil, with and without ground cover? Could you simulate the effect of rain?
Does fresh water hold heat longer than salt water? How does water compare to land and what effect does this have on the weather? What factors affect the cooling of land?
How do different surfaces affect the amount of sunlight reflected and absorbed? Design a method of measuring how much sunshine is available each day.
Can you collect the amounts of water in the air at different temperatures?
What is the difference between direct sun and in the shade? Is the difference constant?
Weather records- Design and build an automatic recording weather device. Test it over a period of time.
What happens to hair during periods of changing humidity?
Record length of days and nights over a period of time; what effects do the changes have on things like household plants, pets, etc.
Can you measure how much dew is formed in a square meter.
How does the temperature change during the day? What time is usually the warmest? Can you construct your own thermometer to keep your own records.
Observations of experimentally-induced seismic waves
A study of small scale wind currents around buildings
A study of solar flares through sudden enhancement of atmospherics
The effects of solar activity on radio propagation
Build a "tornado in a box" to show how tornadoes form
Demonstrate how clouds form via condensation around particulate matter.
Explain how fog forms and build a device that produces fog.
Which affects evaporation the most.. air temperature, water temperature, or wind speed?
Build and demonstrate a weather station with rain gauge and wind indicators.
What is wind chill and what effect does it have on inanimate objects?
Explain why the sky is blue and then sometimes changes color. Demonstrate how moisture or dust in the air can change apparent color of the atmosphere.
Can you demonstrate how an undersea earthquake produces a tsunami?
What causes earthquakes? Build a working model that demonstrates the cause of earthquakes. Build a homemade device to measure earthquakes
What factors affect the slope stability of sand/gravel hillsides?
Demonstrate which holds heat the longest, water or soil.
Will different types of salt grow different kinds of crystals?
Is there a relation between sunspot cycles and earthquake?
What is the accuracy of Web-based Weather forecasting services?

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Engineering

Build a working model of a device that indicates how level a surface is. Perhaps it would make different tones when a bubble moved in a tube.
Designing a strong bridge, an energy efficient home
Comparing insulative properties of various natural and commercial insulators. Which are the best?
Find the maximum speed in fiber optic links
How does weight and shape affect the rate at which an object sinks?
How can I build a home-made thermos bottle?
What is the most efficient design for a windmill?
Which type of barrier is most effective in reducing highway noise?
Design and construct a simple device to demonstrate hovercraft principles
What is the effect of dampening on a shock absorber?
What is the strength of dome shaped eggshells as demonstrated by their weight bearing capacity?
Is it to build a working water clock?
Which style of roof truss is the strongest?
Which building design is best in withstanding an earthquake?
Demonstrate how an AM radio detector can be constructed out of scrap materials and explain the function of the various components.
Build a working model of a body temperature monitor and alarm. Might be great for hikers worried about hypothermia
Can a small sensory robot be built for use on pavements and highways which will automatically search for and indicate when pavement or highway cracks of a certain size are found so they can be repaired?
Build a freeze alarm. The device would sound an alarm when the temperature dropped below 32 degrees F.
Design An Aluminum Powered Fuel Cell
How Does Air Pressure, Materials & Construction of a Ball Affect its Ability to Bounce?
Correlation Between Electric Motor Cooling And Efficiency