science project ideas with hypothesis

• Science, Tech, Math ›
• Chemistry ›
• Projects & Experiments ›

Science Fair Project Ideas

• Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
• B.A., Physics and Mathematics, Hastings College

Science fair is an opportunity for students of all ages to ask big questions, conduct meaningful research, and make exciting discoveries. Browse hundreds of science fair project ideas to find the ideal project according to grade level. 

Preschool Science Project Ideas

Preschool is not too early to introduce children to science! Most preschool science ideas aim to interest kids in exploring and asking questions about the world around them.

• Play with silly putty and examine its properties.
• Look at flowers. How many petals does each flower have? What parts do flowers share in common?
• Blow up balloons. What happens when you release an open balloon? What happens when you rub a balloon on your hair?
• Explore color with fingerpaints.
• Blow bubbles and look at how bubbles interact with each other.
• Make a telephone with cups or cans and some string.
• Have preschoolers categorize objects into groups. Discuss similarities and differences between objects.

Grade School Science Project Ideas

Students are introduced to the scientific method in grade school and learn how to propose a hypothesis . Grade school science projects tend to be quick to complete and should be fun for the student and the teacher or parent. Examples of suitable project ideas include:

• Determine whether insects are attracted to lights at night because of their heat or their light.
• Does the type of liquid (e.g., water, milk, cola) affect seed germination?
• Does the power setting of the microwave affect how many unpopped kernels are in popcorn?
• What happens if you pour a liquid other than water through a pitcher-type water filter?
• What type of bubble gum produces the biggest bubbles?

Middle School Science Fair Ideas

Middle school is where kids can truly shine at the science fair! Kids should try to come up with their own project ideas, based on topics that interest them. Parents and teachers may still need to help with posters and presentations, but middle school students should have control of the project. Examples of middle school science fair ideas include:

• Examine food labels. How does the nutritional data for different brands of the same food (e.g., microwave popcorn) compare?
• Is laundry detergent effective if you use less than the recommended amount?
• How permanent are permanent markers? Are there chemicals that will remove the ink?
• Can a saturated solution of salt still dissolve sugar?
• Do green bags really preserve food longer?
• Are goldfish water chemicals really necessary?
• What shape of ice cube melts the slowest?

High School Science Fair Ideas

High school science fair projects can be about more than a grade . Winning a high school science fair can net some nice cash prizes, scholarships, and college/career opportunities. While it's fine for an elementary or middle school project to take hours or a weekend to complete, most high school projects run longer. High school projects typically identify and solve problems, offer new models, or describe inventions. Here are some sample project ideas:

• Which natural mosquito repellents are most effective?
• Which home hair color holds its color through the most washings?
• Do people who play car racing video games have more speeding tickets?
• Which high school sport is associated with the most injuries?
• What percentage of left-handed people use a computer mouse with their left hand?
• What season is worst for allergies and why?

College Science Fair Ideas

Just as a good high school idea can pave the way for cash and college education, a good college project can open the door to graduate school and gainful employment. A college project is a professional-level project that shows you understand how to apply the scientific method to model a phenomenon or answer a significant question. The big focus on these projects is on originality, so while you might build on a project idea, don't just use one someone else has already done. It's fine to use an old project and come up with a new approach or different way of asking the question. Here are some starting points for your research:

• What plants can detoxify gray water flowing from a home?
• How could the timing of a traffic light be changed to improve intersection safety.
• Which home appliances use the most power? How could that energy be conserved?

This content is provided in partnership with National 4-H Council. 4-H science programs provide youth the opportunity to learn about STEM through fun, hands-on activities and projects. Learn more by visiting  their website.

• 5th Grade Science Fair Projects
• 7th Grade Science Fair Projects
• 8th Grade Science Fair Project Ideas
• 6th Grade Science Fair Projects
• 11th Grade Science Fair Projects
• 3rd Grade Science Fair Projects
• First-Grade Science Projects
• Science Fair Project Ideas for 12th Graders
• Chemistry Science Fair Project Ideas
• 10th Grade Science Fair Projects
• 9th Grade Science Fair Projects
• Science Fair Project Help
• Middle School Science Fair Project Ideas
• High School Science Fair Projects
• 4th Grade Science Fair Projects
• Elementary School Science Fair Projects

80+ STEM (Science, Technology, Engineering, and Mathematics) working projects

Here’s a categorized list of 80+ STEM (Science, Technology, Engineering, and Mathematics) projects for students. These projects are divided into themes across various STEM fields, making them suitable for school projects, science fairs, and personal exploration. I. Science Projects (50 Projects) Physics: Biology:6. Grow plants in different types of soil to study plant growth.7. Explore … Read more

25 chemistry science projects for Class 9

Here’s a comprehensive list of 25 chemistry science projects for Class 9 that cover various chemical concepts, ranging from everyday chemistry to advanced reactions. These projects are practical, fun, and perfect for science fairs or classroom presentations. 1-5: Chemical Reactions and Changes 6-10: Acids, Bases, and Indicators 11-15: Experiments with Gases 16-20: Polymers and Solutions … Read more

how to make skin model

Creating a skin model using simple materials like a cardboard box, silver foil, paints, and channa dal can be a fun and engaging science project. Here’s a step-by-step guide to building a working skin structure model. Materials Required: Steps to Make a Skin Model: Explanation for Presentation: https://www.youtube.com/@craftpiller

10 top science project working models for science exhibition 2024

Here are 10 top science project working models with a brief overview, perfect for a science exhibition in 2024: 1. Geostationary Satellite Model 2. Volcano Working Model 3. Water Pollution Working Model 4. Automatic Street Light Model 5. Solar System Working Model 6. Solar Eclipse Working Model 7. Seed Germination Working Model 8. Photosynthesis Working … Read more

top 10 innovative science project working models for science exhibition 2024

Here’s a brief overview of these innovative science project working models to inspire students: These models are hands-on, engaging, and provide an understanding of scientific concepts with practical applications. https://www.youtube.com/@diypandit

50 top science fair projects for high school students

Here is a list of 50 top science fair projects for high school students, covering various fields such as physics, chemistry, biology, and environmental science. These projects emphasize creativity, innovation, and real-world applications. Physics Projects Chemistry Projects Biology Projects Environmental Science Projects Technology and Innovation Projects These 50 science fair project ideas cover a wide … Read more

how to make Global Warming – Greenhouse Effect Model

Here’s a step-by-step guide to creating a Global Warming – Greenhouse Effect Model with two contrasting scenarios: environmental protection vs. pollution and deforestation, with a circular Earth display on top. Materials Required Concept Overview This model will visually show two different scenarios of the Earth: Step-by-Step Instructions Step 1: Prepare the Cardboard Base Step 2: … Read more

how to make “States of Matter” science project model

Here’s a simple and creative “States of Matter” science project model using paper cups, channa dal (split chickpeas), and sketch pens to explain solids, liquids, and gases. Materials Required How It Works This model will demonstrate the arrangement of particles in the three states of matter: Step-by-Step Instructions Step 1: Label the Paper Cups Step … Read more

How to make Earthquake Alarm Working Model

Here’s a step-by-step guide to building an Earthquake Alarm Working Model using a buzzer, wire, GI wire, 9V battery, cardboard, and color paper. Materials Required How It Works The earthquake alarm detects ground shaking through a pendulum mechanism. A GI wire loop acts as a switch: When the loop touches a freely hanging pendulum, the … Read more

top 10 science project working models for science exhibitions

Here’s a list of top 10 science project working models for science exhibitions, including innovative ideas with links for reference: 1. Water Purification Working Model 2. Hydraulic Press Working Model 3. Water Dispenser Working Model 4. Fire Alarm Working Model 5. Rain Sensor Working Model 6. Drip Irrigation Working Model 7. Strong Bell Working Model … Read more

how to make 3D animal cell model for science exhibition

Creating a 3D animal cell model using cardboard, silver paper, tissue paper, and Fevicol adhesive is a simple and creative way to represent the structure of an animal cell. Here is a step-by-step guide to help you construct the model: Materials Required Cardboard – for the cell base and wall structure. Steps to Make the … Read more

how to make 3D plant cell model for science exhibition

Creating a 3D plant cell model using cardboard, silver paper, tissue paper, and Fevicol adhesive is a fun and educational project. Below is a step-by-step guide to help you build the model and effectively showcase the various parts of the plant cell. Materials Required Steps to Make the Plant Cell Model Step 1: Design the … Read more

Top 10 Science Project Working Models for Science Fair Exhibition

Here’s a list of the Top 10 Science Project Working Models for your next science exhibition, with links and brief descriptions to guide you: 1. Eye Working Model Link: Watch here 2. Solar Eclipse Working Model Link: Watch here 3. Solar System Working Model Link: Watch here 4. Neuron Working Model Link: Watch here 5. … Read more

how to make hemodialysis working model using syringes (without a motor)

Creating a hemodialysis working model using syringes (without a motor) is a great way to demonstrate the process of blood filtration for educational purposes. This project will simulate how dialysis removes waste products and excess fluids from the blood, similar to what kidneys do naturally. Below is a step-by-step guide to building this model using … Read more

Top 10 innovative science project ideas with working models for 2024

Here’s a list of top 10 innovative science project ideas with working models for 2024, along with a summary for each project: 1. Drainage Cleaner Working Model Link: Watch here 2. Highway Electricity Generator Link: Watch here 3. Rain Sensor Cloth Collector Link: Watch here 4. Water Tank Overflow Alarm Link: Watch here 5. Aditya … Read more

Best Project Ideas: Your Path To Great Future

Discover the best project ideas curated just for you! Find exciting topics for your next assignment with our expert guidance. Whether you’re into science, technology, or any field, we’ve got trending topics to fuel your academic journey. Explore now and excel in your studies!

We Are Top-Rated Experts Trusted By Millions Of Students

Welcome to Best Project Ideas, your place for great project topics across different subjects. Whether you’re a student, researcher, or teacher, we’re here to help you find interesting things to explore.

Discover new trends and important challenges in today’s research world. Find opportunities to learn and make a difference in fields like science, technology, and social sciences. Best Project Ideas is your guide to exciting ideas that can help you grow and succeed in your studies.

Come join us on a journey to discover new ideas and create important advancements in your field. Let’s work together to learn and explore in meaningful ways.

Our Latest Articles

Stay Ahead With Our Latest Project ideas

View All Articles