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Second Grade Science Fair Project Ideas

Looking for 2nd grade science fair project ideas for your child's upcoming science fair? 2nd graders are naturally inquisitive, asking dozens of questions about the world around them. Good 2nd grade science fair projects should give kids the tools to seek the answers to their questions, while rewarding them for their innate drive to collect things, count and measure things, and describe things qualitatively. To this end, our team of professional laboratory scientists, science teachers, and educational consultants has put together a rich collection of second grade science fair projects and 2nd grade science experiments that equip kids to engage with the world scientifically.

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Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Second Grade
Weather and Climate
Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.
Second Grade
Oceans
In this science fair project, students use the streak test to tell minerals apart from each other.
Second Grade
Earth & Space Science
Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.
Second Grade
Geology
Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.
Second Grade
Ecology
Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.
Second Grade
Earth & Space Science
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?
Second Grade
Weather and Climate
Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?
Second Grade
Weather and Climate
In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.
Second Grade
Geology
Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.
Second Grade
Weather and Climate
Science fair project that examines condensation and the conditions needed in order for dew to form.
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.
Second Grade
Weather and Climate
In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.
Second Grade
Ecology
This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.
Second Grade
Earth & Space Science

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