5th Grade Life Science Projects

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

This science fair project idea determines if the color of light affects the growth of plants.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

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.

This science experiment tests if dog saliva can really help heal wounds.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

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

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Science fair project which attempts to create a hybrid fish species by breeding two different species of fish together.

This science fair project idea explores whether talking to a plant will help it grow.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?

This science fair project idea explores the different parts of the human ear and models how the human ear reacts to sound waves.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

This science fair project idea experiments with spinning color wheels and optical illusions.

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.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.