Science Project:

Erosion

3.4 based on 112 ratings
Difficulty of Project
Easy
Cost

Less than $5.00

Safety Issues
None
Material Availability

Readily available or easily purchased from a grocery store

Approximate Time Required to Complete the Project

One hour to collect the data; another day to prepare the science fair display

To investigate how water and movement affects erosion

  • 3 clear plastic cups
  • 3 pieces of small candy-coated chocolates
  • Water

The movement of water is one of the primary causes of erosion. Water alone will cause some erosion, but not at the rate of water movement.

Terms

erosion: the wearing away of rocks

Concepts

Water movement causes erosion.

Research Questions:
  • What causes erosion?
  • What causes more erosion water and movement or water alone?

  1. Gather the necessary materials.
  2. Fill two cups halfway with water. Leave the third cup empty.
  3. Place a piece of candy in each cup.
  4. Swirl one cup gently in a circular motion for 15 seconds. Leave the other two cups alone.
  5. Repeat Step 4 every 5 minutes for one hour. Be sure to swirl the same cup each time and leave the other two cups alone. Observe the candies and record any changes.

Articles

“Introduction to Erosion” at http://www.kidsgeo.com/geology-for-kids/0059-introduction-to-erosion.php

“Erosion” by Steve Tomecek at http://www2.scholastic.com/browse/article.jsp?id=2849

“Erosion” at http://www.historyforkids.org/scienceforkids/geology/rocks/sedimentary/erosion.htm

“Erosion and Weathering” at http://science.nationalgeographic.com/science/earth/the-dynamic-earth/weathering-erosion-article.html

Author: Nancy Rogers Bosse
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