Fifth Grade Science Fair Project Ideas

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5th grade
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The Answer is Blowing in the Wind
The Answer is Blowing in the Wind
Science Project
The Answer is Blowing in the Wind
Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.
5th grade
Science
Science Project
Nine: The Biggest Little Number
Nine: The Biggest Little Number
Science Project
Nine: The Biggest Little Number
Learn about the power of exponents. The objective of this science fair project is to explore and understand how exponents are used.
5th grade
Science
Science Project
Microscopic Life is Everywhere
Microscopic Life is Everywhere
Science Project
Microscopic Life is Everywhere
Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.
5th grade
Science
Science Project
Outer Space In My Yard
Science Project
Outer Space In My Yard
Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.
5th grade
Science
Science Project
The Fungus Among Us
The Fungus Among Us
Science Project
The Fungus Among Us
The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.
5th grade
Science
Science Project
Does Ultraviolet (UV) Light Pass through Some Colors More than Others?
Science Project
Does Ultraviolet (UV) Light Pass through Some Colors More than Others?
The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.
5th grade
Science
Science Project
Plane Mirror Reflection Experiment
Plane Mirror Reflection Experiment
Science Project
Plane Mirror Reflection Experiment
In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!
5th grade
Science
Science Project
How to Make a Rubber Band Car
How to Make a Rubber Band Car
Science Project
How to Make a Rubber Band Car
Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.
5th grade
Science
Science Project
Catalase and Hydrogen Peroxide Experiment
Science Project
Catalase and Hydrogen Peroxide Experiment
In this cool catalase and hydrogen peroxide experiment, kids put a potato in a jar of hydrogen peroxide to see how catalase acts as an enzyme.
5th grade
Science
Science Project
Does Electricity Move Better through Thick Wires or Thin Ones?
Does Electricity Move Better through Thick Wires or Thin Ones?
Science Project
Does Electricity Move Better through Thick Wires or Thin Ones?
Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.
5th grade
Science
Science Project
How to Make Gears
How to Make Gears
Science Project
How to Make Gears
In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.
5th grade
Science
Science Project
Sink or Swim: Calculating Density of Fruits and Vegetables
Sink or Swim: Calculating Density of Fruits and Vegetables
Science Project
Sink or Swim: Calculating Density of Fruits and Vegetables
Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.
5th grade
Science
Science Project
Caffeine and Heart Rate: What Is the Effect of Caffeine on Heart Rate?
Caffeine and Heart Rate: What Is the Effect of Caffeine on Heart Rate?
Science Project
Caffeine and Heart Rate: What Is the Effect of Caffeine on Heart Rate?
Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.
5th grade
Science
Science Project
Salinity and Hatching Brine Shrimp Eggs
Salinity and Hatching Brine Shrimp Eggs
Science Project
Salinity and Hatching Brine Shrimp Eggs
Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.
5th grade
Science
Science Project
3-D Model of the Sun
3-D Model of the Sun
Science Project
3-D Model of the Sun
In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.
5th grade
Science
Science Project
How to Measure Viscosity of Liquids
How to Measure Viscosity of Liquids
Science Project
How to Measure Viscosity of Liquids
Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.
5th grade
Science
Science Project
What Causes the Phases of the Moon?
What Causes the Phases of the Moon?
Science Project
What Causes the Phases of the Moon?
What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.
5th grade
Science
Science Project
Parts of a Bean Seed
Parts of a Bean Seed
Science Project
Parts of a Bean Seed
Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.
5th grade
Science
Science Project
Plant Phototropism Experiment
Plant Phototropism Experiment
Science Project
Plant Phototropism Experiment
What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!
5th grade
Science
Science Project
Effect of Artificial Light on Plant Growth
Effect of Artificial Light on Plant Growth
Science Project
Effect of Artificial Light on Plant Growth
Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.
5th grade
Science
Science Project
Microwave Plant Experiment: Radish Seed Germination
Microwave Plant Experiment: Radish Seed Germination
Science Project
Microwave Plant Experiment: Radish Seed Germination
In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?
5th grade
Science
Science Project
Examples of Mechanical Weathering
Examples of Mechanical Weathering
Science Project
Examples of Mechanical Weathering
Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.
5th grade
Science
Science Project
The Hydrologic Cycle
The Hydrologic Cycle
Science Project
The Hydrologic Cycle
What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!
5th grade
Science
Science Project
How Do the Phases of the Moon Affect the Tides?
How Do the Phases of the Moon Affect the Tides?
Science Project
How Do the Phases of the Moon Affect the Tides?
How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!
5th grade
Science
Science Project
Grass Turning Yellow: Chlorosis
Science Project
Grass Turning Yellow: Chlorosis
Here is a cool and easy science project to determine the rate of chlorophyll breaks down and how it affects the color change of grass from green to yellow.
5th grade
Science
Science Project

Fifth Grade Science Fair Project Ideas

Education.com's 5th grade science projects enable kids to apply everything they've learned over the course of their elementary school careers in order to discover some pretty cool and new things about the world around them. In addition to setting up more sophisticated experimental procedures, 5th graders can analyze their results using more sophisticated math, and may begin to acquire an appreciation for large sample sizes and their ability to produce more reliable averages. Browse our rich collection of 5th grade science fair projects by clicking the boxes to the left to filter your results by scientific subtopic to find fantastic 5th grade science fair projects or enlightening 5th grade science experiments for your young scientist.