Erosion Experiment and Observations

This video tutorial explains how to slow changes to the Earth's landscape using straw wattles. It includes an activity where students observe water erosion on a hill and use a paper towel wattle to prevent it. The tutorial guides students through setting up the experiment, making predictions, conducting the experiment, and recording observations. Students learn to build a wattle and observe its effects on erosion, concluding with communicating their findings.

What is the primary purpose of using wattles on a hillside?

• To enhance the growth of plants

• To prevent soil erosion

• To improve water quality

• To attract wildlife

Which of the following is NOT a material needed for the erosion experiment?

• Toothpicks

• A thermometer

• A spoon

• Safety goggles

What is the first step in setting up the experiment?

• Covering the hill with sand

• Molding the clay into a hill shape

• Filling the cup with water

• Placing the wattle on the hill

During the experiment without a wattle, what simulates rain?

• A watering can

• A spray bottle

• A cup with holes

• A garden hose

What should you do after observing the water running down the hill without a wattle?

• Remove the sand

• Start the experiment over

• Record observations in the data table

• Add more water

How is the paper towel wattle secured on the hill?

• With rubber bands

• With toothpicks

• With tape in the middle

• With glue

What is the purpose of twisting the toothpick when securing the wattle?

• To make it look neat

• To ensure it penetrates the layers

• To prevent it from breaking

• To make it easier to remove

What should you observe when the water runs down the hill with the wattle in place?

• The water flows faster

• The water is absorbed completely

• The erosion is reduced

• The hill collapses

After completing the experiment, what is the next step?

• Communicate your findings

• Repeat the experiment

• Dispose of the materials

• Clean the pan

What should you use to complete the 'communicate information' section?

• Your partner's data

• Your predictions

• Your teacher's notes

• Your observations