4th Grade Engineering and Science Inquiry Resources : Page 7

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

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.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

This science fair project idea examines whether boys and girls differ in reflexes.

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.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

In this science fair project, students use the streak test to tell minerals apart from each other.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

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

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

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

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

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

This science project teaches students to classify different shapes of leaves.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.