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Science Fair Project Ideas

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

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The purpose of this science fair project is to investigate how the caffeine in soda drinks impacts the human heart rate.
Caffeine and Heart Rate
Second Grade
Anatomy
Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.
Rainbow in a Jar
Second 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?
Second Grade
Weather and Climate
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
Second Grade
Weather and Climate
In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.
Sun Print: How Solar Energy Creates Chemical Changes
Second 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?
Second Grade
Anatomy
Test your friends to find out if you can replicate the placebo effect's incredible results.
The Placebo Effect
Second Grade
Anatomy
Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!
Fingerprint Analysis: A Family Case Study
Second Grade
Anatomy
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
Second 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
Second Grade
Weather and Climate
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
Second Grade
Weather and Climate
The goal of this evaporation experiment is to learn about how different external conditions affect drying time.
Rate of Evaporation
Second Grade
Weather and Climate
This experiment challenges students to forecast the weather based on the surrounding areas' weather.
Meteorologist for a Day
Second Grade
Weather and Climate

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