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1000 Science Fair Projects with Complete Instructions

12 Good Testable Questions

12 Good Testable Questions

A testable question is a question that we can answer through an experiment. To do this, we change one thing and see what happens. This is how we can discover the answer to our question!

Here are some testable questions, along with the science fair projects that answer those questions!

1) What makes a cloud form?

2) Can drink and food taste different just by changing its color?

3) What makes popcorn pop?

4) Does temperature affect seed sprouting?

5) Does the color of light affect photosynthesis?

6) Does exercise affect memory?

7) Can fruits and vegetables generate electricity?

8) Can you protect a raw egg from a drop using common materials?

9) What happens when a raw egg is put into vinegar?

10) What drink causes more stains on teeth?

11) Can plants be watered with detergent water?

12) What kinds of food does mold grow fastest on?

Pressure, Smoke, and Cloud Formation
1. Pressure, Smoke, and Cloud Formation
Drop a lit match into a jar with water vapor and seal it with a plastic bag. Pull the bag outward and watch a real cloud form inside.
Medium
Beverage Color and Flavor Perception
2. Beverage Color and Flavor Perception
Dye four identical lime drinks different colors and see how many people taste flavors that match the color instead.
Medium
Microwave Popcorn Brand Comparison
3. Microwave Popcorn Brand Comparison
Pop three brands of microwave popcorn for the same time and count which one leaves the fewest unpopped kernels.
Easy
Soil Temperature and Seed Sprouting Speed
4. Soil Temperature and Seed Sprouting Speed
Place seed pots at three different soil temperatures and track which group sprouts first. Heat may speed up germination more than expected.
Medium
Light Color and Elodea Oxygen Production
5. Light Color and Elodea Oxygen Production
Place an aquatic plant under five colors of light and measure which one drives the most oxygen production.
Medium
Exercise Before Exams and Test Scores
6. Exercise Before Exams and Test Scores
Have participants take the same exam twice -- once without exercise, once after 30 minutes of jogging -- and compare the scores.
Hard
Lemon-Powered LED Light
7. Lemon-Powered LED Light
Turn a lemon into a working battery and find out whether it can produce enough electricity to light an LED.
Easy
Egg Drop Survival Challenge
8. Egg Drop Survival Challenge
Design a protective case from household materials and find out whether your raw egg survives a high drop.
Medium
Seashells and Vinegar
9. Seashells and Vinegar
Place one seashell in vinegar and another in water, then check back in a week to see which one dissolves.
Easy
Beverage Stains on Tooth Enamel
10. Beverage Stains on Tooth Enamel
Soak five teeth in coffee, tea, grape juice, red wine, and cola to discover which beverage leaves the darkest stain.
Easy
Detergent Water and Plant Survival
11. Detergent Water and Plant Survival
Mix three types of detergent into water and feed them to plants for a week to see which ones survive.
Easy
Mold Growth on Different Foods
12. Mold Growth on Different Foods
Seal five different foods in bags and track mold growth for a week to find out which one fungi colonize fastest.
Medium

Science Fair Project FAQ

How do I start a science fair project?

Science fair projects are a fun and unique way to discover science by asking a question and doing a science project. We'll help you find a science fair project idea and guide you through the process of doing and presenting your science fair project with Science Fair Coach's Science Fair Project Guide.

What are some hands-on ways to find inspiration for my science fair project?

Science museums are great places to explore if you're looking for inspiration for your next science fair project or just want to learn more about science. Science museums, natural history museums, space museums, and discovery museums are all great places to do that! You can discover all sorts of interesting things about science and find cool project ideas for science fairs.

There may be free admission days or free passes to a science museum near you! Check your local library for free museum passes, nearby science museums for free entrance days and your credit card for offers.

Find a science museum near you and prepare to be awed by all that you can learn there! I always learn something new and am inspired whenever I go to a science museum!

What should I do after I have a science fair project idea?

If you have a science fair project idea, Science Fair Coach can help you turn it into a full science fair project! Starting at Introduction to Science Fairs, we'll guide you through how to do a science fair project, from designing and conducting your experiment to collecting and analyzing your findings. Then, we'll help you showcase your results on a science fair board with our Guide to Science Fair Posters.

How do I make a science fair board?

Your science fair board is where you show off your science fair project for everyone to see and learn from. With our Guide to Science Fair Posters, you can make sure your science fair board stands out and impresses at the science fair!

What is the scientific method?

The 7 steps of the scientific method helps us understand how nature works. Learn how the scientific method is used in a science fair project example, and how it's evolved through history as scientists used different ways to learn about nature with our Guide to the Scientific Method!

What is the engineering design process?

The 6 steps of the engineering design process helps us design an effective solution to a problem. Learn how to use the engineering design process with the example of the egg drop challenge in our Guide to the Engineering Design Process!

Where can I find a science fair competition?

Science fair competitions are an excellent opportunity to explore science. One of the of the premier science advocacy organizations, the Society for Science, is associated with more than 400 science fair competitions in almost every US state, as well as over 70 other countries, regions, and territories. You can find out if there's a Society of Science affiliated science fair near you!

The www Virtual Library: Science Fairs website also has a collection of science fairs from all over the world, as well as national, state, regional, local, and virtual competitions!

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