Preventing Changes on Earth's Surface

What force creates sand dunes?

• water

• wind

• ice

What is erosion?

• breaking down of materails

• carrying away and moving of materials

Landslides can be prevented by... (choose all)

• Planting more plants

• Building a road on the mountain

• Putting rocks or metal on the slope

• Building a tunnel under the mountain

Prevent means...

• To make something happen

• To get ready for something before it happens

• To stop something before it happens

This change to Earth's surface was caused by...

• Wind

• Water

• Volcano

• Landslide

This change was caused by....

• Rushing water

• Heavy rains

• Flood

This change was caused by....

• Rushing water

• Heavy rains

• Flood

This change was caused by....

• Rushing water

• Heavy rains

• Flood

This is a...

• Sand bags

• Windbreak

• Dike

These are...

• Sand bags

• Windbreak

• Dike