4/5: Erosion & Weathering

What does Earth look like from space?

• Completely unrecognizable

• Different every day

• The same as always

• Always changing

How does the appearance of Earth from space compare to its appearance up close?

• It's always changing up close

• It appears unchanged

• It looks completely different

• It's smoother from space

What are the two types of weathering?

• Solid and Liquid

• Natural and Artificial

• Mechanical and Chemical

• Internal and External

What causes mechanical weathering?

• Heat from the Sun

• Plants and animals

• Chemicals

• Water and air

What causes chemical weathering?

• Water and ice

• Heat only

• Carbon dioxide and acids

• Animals

What is erosion?

• The process of breaking rocks into smaller pieces

• A type of chemical reaction

• The creation of new landforms

• The movement of weathered materials

What is the main difference between weathering and erosion?

• Weathering only happens with air

• Weathering breaks rocks, erosion moves them

• Erosion only involves water

• Erosion breaks rocks, weathering moves them

How did Cape Cod's coastline change from 1984 to 2014?

• It split into several islands

• It completely disappeared

• It became one large island

• It didn't change

What role does water play in shaping Earth's landforms?

• It has no effect

• It only makes them dry

• It only affects rivers

• It shapes and sometimes moves them

What did the geosphere say to the hydrosphere?

• You're too cold

• You're too wet

• Stop moving me

• You crack me up