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Science Fair Project Ideas

Great selection of fourth grade science fair project ideas. These science fair projects can help you find fourth grade level ideas for your science fair.

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This science experiment tests if dog saliva can really help heal wounds.
Can Doggy Drool Really Kill Germs?
Fourth Grade
Health and Medicine
The objective of this science fair project is to find out how much fat is in potato chips.
How Greasy are Your Potato Chips?
Fourth Grade
Health and Medicine
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Snow to Liquid Ratio
Fourth Grade
Weather and Climate
This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.
The Role of Fat in Food
Fourth Grade
Health and Medicine
In this science fair project, students make their own rain gauge to measure rainfall.
DIY Rain Gauge
Fourth Grade
Weather and Climate
In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.
How Do Weather Conditions Affect How Fast a Puddle Evaporates?
Fourth Grade
Weather and Climate
This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.
Which Food Will Mold the Fastest?
Fourth Grade
Health and Medicine
In this science fair project, you'll make a 'ghost' appear in a test tube, and learn about what happens when hot water and cold water interact.
The Ghost in the Tube
Fourth Grade
Weather and Climate
In this science fair project, students find out how color affects how hot something gets.
Do Some Colors Create More Heat than Others?
Fourth Grade
Weather and Climate
In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.
Warm, Warmer: How Does Exercise Change Body Temperature?
Fourth Grade
Health and Medicine
Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?
A Thunderous Sound
Fourth Grade
Weather and Climate
Could there be toxic chemicals lurking in the cupboards and closets of your home?
Toxic Chemicals: What's in Your Home?
Fourth Grade
Health and Medicine
Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.
Too Cold To Snow?
Fourth Grade
Weather and Climate
Science fair project that examines condensation and the conditions needed in order for dew to form.
Dew Point, Humidity and Weather
Fourth Grade
Weather and Climate
Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?
Albedo
Fourth Grade
Weather and Climate

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