EROSION

WHAT IS EROSION?

• Erosion is when rocks break down from natural causes.
• The two types of erosion are physical and chemical erosion.
• Erosion happens from things like
• Rust, ice, water, wind, and other things.

CHEMICAL EROSION

• Chemical erosion is when a chemical reacts
• To a rock and changes it.
• One great example of this is oxidation or rust.
• The rock is changed in some way other than
• A crack or break.

PHYSICAL EROSION

• Physical erosion is when a rock changes it's appearance.
• The rock is not acted upon by any chemicals.
• Some examples are wind, ice, water, or even gravity.
• Physical erosion causes the rock to break,
• But no chemicals are involved.

MORE ABOUT EROSION

• Even the biggest rocks can be eroded.
• Erosion is constantly happening.
• Gravity can erode rocks by bringing them down.
• This causes the rock to roll and break apart.

WHY IS EROSION IMPORTANT?

• Erosion causes rocks to break into dirt.
• The dirt can be used to grow crops.
• The crops grown from rocks support life.
• We are able to survive thanks to erosion.
• This process is very important.