Search 4th Grade Science Projects : Page 2

This science fair project idea provides evidence that air is everywhere and takes up space.

Test whether plants can grow without sunlight and water.

Take a dive into the candy jar with this yummy science experiment.

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This science fair project idea produces sounds by creating vibrations using different objects.

Examine the effect of pressure on carbonation in soda.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.