4th Grade Engineering and Science Inquiry Activities : Page 9

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.

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

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

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

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

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

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 projects, students will grow out the bacteria that collect on air conditioner filters.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Find out whether putting something on top of a plant will inhibit its growth.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project will help students learn about non-vascular plants, such as mosses.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

This science fair project idea investigates if fats add to the flavor of food.

Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...