Julian's Science Fair
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4th Grade Science Fair Projects
Free Project Examples and Ideas by Grade Level











See also:
Grade 3 Science Fair Project Ideas and Examples
Grade 5 Science Fair Project Ideas and Examples
Primary School Science Fair Project Ideas and Examples
Elementary School Science Fair Project Ideas and Examples

Chemistry
Which disinfectants are the best at destroying germs? [View Project]
What kind of ice melting products work the fastest and damage plant life the least. [View Project]
Determine which fabric is the best insulator. [View Project]
Find out which liquid evaporates the fastest. [View Project]
The effects of different chemicals on the color of different fabrics [View Project]
Discover if sugar crystals grow bigger in a certain type of liquid [View Project]
The effect of moisture on crystal growth [View Project]
Make your own stalactite [View Project]
Measure air pressure by using chemicals and corked bottles [View Project]

Botany
What kind of ice melting products work the fastest and damage plant life the least. [View Project]
The Effect of Acid Rain on Spider plants [View Project]
Explore Endangered Species [View Project]
How do different concentrations of salt water affect plants? [View Project]
Will roots: hold soil together, always grow towards water, always point down? [View Project]
Is there a way to prolong the life of fresh cut flowers? [View Project]
What happens when a plant population is too dense? [View Project]

Energy
Methods of storing electrical energy [View Project]
Pull a car with water power [View Project]
What is the Effect of Magnification on Heat in a Solar Oven? [View Project]
Is the amount of heat energy used less when there are more kids in the school? [View Project]
Which drink would make a car go the fastest by putting a nitro tablet inside it [View Project]

Environmmental
Practices that might reduce the amount of wastes created at school [View Project]
Explore Endangered Species [View Project]
The Effect of Acid Rain on Spider plants [View Project]

Earth
Find different ways to prevent the damaging effects of soil erosion. [View Project]
How does precipitation vary around the country? [View Project]
Which planet in our solar system has the safest environment for humans to live on? [View Project]

Astronomy
Which planet in our solar system has the safest environment for humans to live on? [View Project]
Demonstrate what happens when a meteor hits the earth and becomes a meteorite. [View Project]

Engineering
Determine whether the pitch of a string can be changed by changing tension or length? [View Project]
Pull a car with water power [View Project]
Which drink would make a car go the fastest by putting a nitro tablet inside it [View Project]

Aviation
The effects of the size and shape of a balloon rocket on its flight speed [View Project]
How far paper airplanes go depending on shape, size and weight. [View Project]

Health
How Certain Beverages Affect Tooth Decay [View Project]
Which disinfectants are the best at destroying germs? [View Project]

Biology
How did the Ancient Egyptians Mummify? [View Project]

Electricity
Energy Consumption Efficiency of Different Kind of Light Bulbs [View Project]
Methods of storing electrical energy [View Project]

Zoology
Explore Endangered Species [View Project]

Psychology and Human Behavior
Think, and Change your Dreams [View Project]



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Last updated: June 2013
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