169 Fun & Good Science Fair Projects

Find fun and good science fair projects for everyone! Explore easy experiments in science and start learning today.

Ready to try a fun science project? A good science fair project helps you learn new things and shows how cool science can be. It’s all about testing ideas and seeing what happens. Whether you want to learn about plants, chemistry, or how things move, there are lots of fun ideas to choose from.

Here are some simple and fun science project ideas to help you get started. These projects will let you test things, see what works, and share what you find. Pick a project you like, and have fun learning something new! Let’s dive into some easy science fair projects.

Good Science Fair Projects PDF

The Importance of Science Fair Projects

Here are the importance of science fair projects:

Good Science Fair Projects

Check out some good science fair projects:

Physics

1. How does weight affect falling speed?
2. Testing which materials are strongest.
3. Making a simple electric circuit.
4. How does a ramp angle affect speed?
5. How does sound travel in different materials?
6. How does friction slow things down?
7. Does temperature change how high a ball bounces?
8. How does a pendulum work?
9. Which shape has the least air resistance?
10. What materials are magnetic?

Chemistry

1. How does heat change how fast something dissolves?
2. Which liquid dissolves sugar fastest?
3. Testing the pH of different liquids.
4. Making a volcano with baking soda.
5. How does acid affect reactions?
6. What happens when you mix baking soda and vinegar?
7. How does water temperature affect salt dissolving?
8. Testing how to purify water.
9. How does rust form?
10. How does pH affect enzyme activity?

Biology

1. How does light affect plant growth?
2. Which water helps plants grow best?
3. How does salt change the freezing point of water?
4. Watching mold grow on food.
5. How does soil affect plants?
6. How do different liquids affect plants?
7. How does humidity affect seeds growing?
8. How does temperature affect fish behavior?
9. How do different foods affect bacteria?
10. Which color attracts butterflies?

Environmental Science

1. How does pollution affect plants?
2. Testing which material keeps things warmest.
3. Comparing water filters.
4. How does temperature affect water in plants?
5. Testing oil spills in water.
6. How does recycling help?
7. How does deforestation affect animals?
8. How does energy affect the environment?
9. Comparing travel methods’ carbon footprint.
10. How does trash disposal impact the environment?

Engineering

1. Building a simple water filter.
2. Testing paper bridge strength.
3. Comparing different glues.
4. Making a simple solar oven.
5. Building a wind turbine.
6. How does design affect building strength?
7. Making a robot with motors.
8. Testing boat materials.
9. How do wheels affect speed?
10. Testing different pulleys.

Earth Science

1. How does soil affect water absorption?
2. Testing how rocks absorb water.
3. How does wind move sand?
4. Measuring soil erosion.
5. How do earthquakes affect buildings?
6. Testing acid rain effects on plants.
7. How does depth affect water temperature?
8. Best material for building shelters in cold weather?
9. How does sun angle affect temperature?
10. Testing volcanic eruption impacts.

Psychology

1. Does color affect mood?
2. How does noise affect focus?
3. Testing memory with pictures.
4. Does exercise improve focus?
5. How does sleep affect memory?
6. How does stress affect tasks?
7. How does music affect studying?
8. Does being watched improve performance?
9. How does social media affect mood?
10. Can positive thinking help with tasks?

Health & Medicine

1. How does exercise affect heart rate?
2. Which soap kills more germs?
3. How does caffeine affect reactions?
4. Testing drinks that stain teeth.
5. Does eating breakfast help school work?
6. How does handwashing stop germs?
7. How does sleep affect your health?
8. Testing how salts affect blood pressure.
9. Does drinking water improve focus?
10. How does smoking affect lungs?

Technology

1. Making a robot with motors.
2. How does Wi-Fi change with distance?
3. Testing different phone screen protectors.
4. Creating an app to measure speed.
5. Which browser loads websites fastest?
6. How do social media algorithms work?
7. How do video games affect sleep?
8. Comparing smartphone battery life.
9. How does screen quality affect photos?
10. Testing solar-powered gadgets.

Astronomy

1. How does the moon affect tides?
2. Making a simple solar system model.
3. How does light pollution affect stargazing?
4. How does sunlight affect solar panels?
5. How does Earth’s tilt cause seasons?
6. How does planet size affect gravity?
7. Comparing planet orbits.
8. How do sunspots affect solar energy?
9. Which materials make the best telescopes?
10. How does a planet’s orbit affect its year?

Mathematics

1. Which shape is the strongest?
2. Finding patterns in the Fibonacci sequence.
3. How accurate is probability?
4. How time and speed are related.
5. How does circle size affect its perimeter?
6. Testing dice probabilities.
7. How does the angle of a mirror affect light?
8. How does square size change its perimeter?
9. Testing the Golden Ratio.
10. Comparing different types of graphs.

Agriculture

1. Which plant grows fastest?
2. Testing plant growth with different fertilizers.
3. How does light affect crop growth?
4. How do different soils affect plant growth?
5. Which plant grows best in shade?
6. How does watering affect plant health?
7. Testing which plants attract bees.
8. How does temperature affect seed sprouting?
9. Comparing natural vs. chemical fertilizers.
10. How does the type of water affect plant growth?

Food Science

1. How does temperature affect food texture?
2. Which fruit ripens the fastest?
3. How does freezing affect food?
4. Comparing different ways to preserve food.
5. How do different cooking methods affect food flavor?
6. How does salt preserve food?
7. Which food keeps fresh longest?
8. How does pH affect food preservation?
9. How do different sugars affect baking?
10. How does cooking time affect food nutrients?

Social Science

1. How do cultural festivals affect local communities?
2. What makes people feel happy?
3. How does volunteering help communities?
4. How does education affect career choices?
5. How does media affect public opinion?
6. How does social media affect friendships?
7. What affects people’s buying decisions?
8. How do communities handle emergencies?
9. How do people communicate in different cultures?
10. How does technology affect social behavior?

Choosing a Science Fair Project

Picking a science fair project is fun! Here are some easy tips:

These tips will help you pick a science fair project that works for you!

Planning and Conducting the Experiment

Here’s how to plan and do your science experiment:

1. Make a Plan: Write down what you want to test and how.
2. Gather Materials: Get everything you need before starting.
3. Ask a Question: Think about what you want to learn.
4. Make a Guess: Guess what you think will happen.
5. Set It Up: Follow your plan and get everything ready.
6. Do the Experiment: Try it out and watch what happens.
7. Write It Down: Record what you see or measure.
8. Look for Patterns: See if anything repeats.
9. Check Your Work: Make sure everything is right.
10. Think About Your Results: What did you learn from the experiment?

Executing the Project

Here’s how to execute your science project:

1. Follow Your Plan: Stick to the steps you wrote down.
2. Be Careful: Handle materials carefully and stay safe.
3. Do the Experiment: Carry out the experiment as planned.
4. Take Notes: Write down everything you see and measure.
5. Repeat If Needed: If something doesn’t work, try again or make changes.
6. Stay Organized: Keep everything neat and easy to follow.
7. Ask for Help: If you get stuck, ask someone for advice.
8. Keep Track of Time: Make sure you’re finishing on time for the fair.
9. Be Patient: Some experiments take time, so be patient and keep checking.
10. Have Fun: Enjoy the process and learn something new!

Creating the Presentation

Here’s how to create your presentation:

1. Title: Give your project a simple title.
2. Introduction: Tell what your project is and why you chose it.
3. Your Question: Share the question you wanted to answer.
4. Your Plan: Explain how you did the experiment.
5. Results: Show what happened in your experiment.
6. Pictures: Add pictures or drawings to help explain.
7. Simple Words: Keep your words easy to understand.
8. What You Learned: Tell what you found out.
9. Keep It Short: Make sure it’s not too long.
10. Practice: Practice saying your presentation out loud.

Common Mistakes to Avoid

Here are common mistakes to avoid during your science project:

1. Not Following the Plan: Stick to the steps you made.
2. Forgetting to Write Down Results: Always take notes during your experiment.
3. Not Giving Enough Time: Plan enough time to finish your project.
4. Skipping the Hypothesis: Always make a guess about what will happen before starting.
5. Not Being Organized: Keep your materials and notes in order.
6. Not Asking for Help: Don’t hesitate to ask someone if you need advice.
7. Making It Too Complicated: Keep the project simple and focused.
8. Not Testing Properly: Make sure your experiment is done carefully.
9. Not Practicing the Presentation: Practice so you feel confident when explaining.
10. Ignoring Safety: Always follow safety rules when working with materials.

Tips for a Successful Science Fair Project

Here are some tips for a great science fair project:

1. Pick What You Like: Choose a topic you enjoy.
2. Start Early: Give yourself enough time to finish.
3. Stay Organized: Keep your notes and materials neat.
4. Ask Questions: Think about what you want to learn.
5. Be Curious: Try new ideas and explore.
6. Test Carefully: Do your experiment step by step.
7. Write Down Everything: Keep track of what happens.
8. Practice Talking About It: Explain your project with confidence.
9. Keep It Simple: Focus on one main idea.
10. Have Fun: Enjoy the project and learn something new!

Examples of Good Science Fair Projects

Here are some very simple science fair ideas:

1. Plants and Light: See how light affects plants.
2. Ice Melting: Test if salt melts ice faster.
3. Sugar in Water: See which water dissolves sugar faster—hot or cold.
4. Music and Plants: See if plants grow better with music.
5. Soil and Plants: Find out which soil is best for plants.
6. Balloons and Air: See how air changes the size of balloons.
7. Paper Airplanes: Test which paper airplane flies the best.
8. Ramp Speed: See how the ramp angle changes speed.
9. Skateboard Speed: Test how different surfaces affect skateboard speed.
10. Mold Growth: See if mold grows faster in light or dark.

What are the top 10 science fairs?

Here are 10 top science fairs:

1. Intel ISEF – Global science fair for high schoolers.
2. Google Science Fair – Online contest for ages 13-18.
3. Broadcom MASTERS – For U.S. middle school students.
4. Regeneron Science Talent Search – U.S. competition for high schoolers.
5. Young Scientist Challenge – U.S. contest for ages 9-14.
6. EU Science Contest – European competition for young scientists.
7. Discovery Education 3M Challenge – For U.S. middle schoolers.
8. London Youth Science Forum – Global event for students aged 16-21.
9. Canadian Science Fair – Canada’s top science competition.
10. Japan Science Fair – For high schoolers in Japan.

What are some good 10th grade science fair projects?

Here are 10 really simple science fair ideas:

1. pH and Plants: See how different water pH levels affect plants.
2. Heat and Reactions: Test how heat speeds up reactions.
3. Solar Power: See how solar panel angles affect energy.
4. Music and Memory: Test if music helps you remember things.
5. Best Insulation: See which material keeps things warm.
6. Rust and Saltwater: Test if saltwater rusts metal faster.
7. Exercise and Heart Rate: See how exercise changes heart rate.
8. Sugar vs. Sweeteners on Plants: Test what helps plants grow better.
9. Pollution and Water: See how pollution affects water.

What are some good 7th grade science fair projects?

Here are 10 very simple 7th grade science fair ideas:

1. Light and Plants: See how light color affects plant growth.
2. Salt and Ice: Test if salt melts ice faster.
3. Magnet Power: See how distance affects a magnet’s strength.
4. Water Evaporation: See if heat makes water evaporate faster.
5. Paper Planes: Test which paper airplane flies the farthest.
6. Music and Plants: See if plants grow better with music.
7. Baking Soda and Vinegar: Test how they react together.
8. Temperature and Sound: See how hot or cold air changes sound.
9. Sugar and Teeth: See how sugar affects teeth.
10. Soil and Plants: Test which soil helps plants grow best.

Good Science Fair Projects for High School

Here are some good science fair projects for high school:

Ice Melting Speed

Objective: Test how fast ice melts in different temperatures.

Materials: Ice cubes, thermometer, rooms with different temperatures, timer.

Steps:

• Place ice cubes in different temperature areas.
• Measure the temperature of each area.
• Time how long it takes for the ice to melt.
• Compare the results.

Conclusion: Which temperature melts ice the fastest?

Best Water for Plants

Objective: Test how different liquids affect plant growth.

Materials: Small plants, different liquids (e.g., tap water, soda), pots, ruler.

Steps:

• Plant seeds in separate pots.
• Water each plant with a different liquid.
• Measure how each plant grows.
• Compare the growth of each plant.

Conclusion: Which liquid helps plants grow best?

Candle Burn Time

Objective: See which candle burns the longest.

Materials: Several candles, timer.

Steps:

• Light each candle one by one.
• Time how long each candle burns.
• Compare burn times.

Conclusion: Which candle burns the longest?

Paper Airplane Distance

Objective: Test different paper airplane designs for distance.

Materials: Paper, ruler, tape measure.

Steps:

• Make several paper airplane designs.
• Throw each airplane.
• Measure how far each airplane flies.
• Compare the distances.

Conclusion: Which design flies the furthest?

Walking on Surfaces

Objective: Compare how easy it is to walk on different surfaces.

Materials: Different surfaces (e.g., carpet, tile, grass), stopwatch.

Steps:

• Walk a set distance on each surface.
• Time how long it takes to walk on each surface.
• Compare the results.

Conclusion: Which surface is easiest to walk on?

Light vs. Plant Growth

Objective: Test if plants grow better in light or shade.

Materials: Two plants, light and shaded areas, ruler.

Steps:

• Place one plant in the sun and one in the shade.
• Measure the growth of each plant.
• Compare the growth of both plants.

Conclusion: Do plants grow better in light or shade?

Salt and Freezing Water

Objective: See how salt affects the freezing speed of water.

Materials: Salt, water, freezer, two containers.

Steps:

• Fill two containers with water.
• Add salt to one container.
• Put both containers in the freezer.
• Time how long it takes each one to freeze.

Conclusion: Does salt slow down the freezing of water?

Bubble Comparison

Objective: Compare which soda makes the most bubbles.

Materials: Different sodas, clear glasses.

Steps:

• Pour soda into separate glasses.
• Stir each soda.
• Count the bubbles that form.
• Compare the number of bubbles.

Conclusion: Which soda makes the most bubbles?

Rubber Band Stretch

Objective: Test how temperature affects rubber band stretch.

Materials: Rubber bands, hot and cold water, ruler.

Steps:

• Place rubber bands in hot and cold water.
• Stretch each rubber band.
• Measure how far each rubber band stretches.

Conclusion: How does temperature affect rubber band stretch?

Color and Heat

Objective: Test which color absorbs the most heat in the sun.

Materials: Different colored fabrics, thermometer, sunny space.

Steps:

• Place a thermometer under each fabric color.
• Leave them in the sun for a while.
• Measure the temperature.

Conclusion: Which color absorbs the most heat?

Wrap Up

In conclusion, picking a simple science fair project can make the experience fun and easy to manage. Projects like testing how light affects plant growth or how quickly ice melts at different temperatures help you learn important skills, like observing and problem-solving.

These projects also show how science works in real life. The key is to choose a project that’s clear, easy to do, and interesting to you. With the right approach, your project can be both fun and educational!