The Changing Surface of Earth

What are the two ways in which weathering happens?

• Chemical and mechanical

• Physical and biological

• Heat and cold

• Water and wind

What happens to rocks when water dissolves the salt in them?

• They break apart

• They become harder

• They become softer

• They change color

Tags

NGSS.MS-PS1-2

What causes mechanical weathering?

• Heat and cold

• Water and wind

• Plants and animals

• Gravity and erosion

How does ice contribute to mechanical weathering?

• It expands and breaks rocks

• It melts and forms sediment

• It carries sediment away

• It pushes rocks uphill

Tags

NGSS.MS-ESS2-2

What is chalk primarily used for?

• Writing on chalkboards

• Building cement

• Cleaning teeth

• Making powders

What causes erosion?

• Heat and cold

• Water and wind

• Plants and animals

• Gravity and erosion

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

What happens to sediment when wind carries it away?

• It disappears

• It turns into rock

• It falls into the water

• It forms new land

Tags

NGSS.MS-ESS2-2

How does gravity contribute to erosion?

• It pulls rocks down mountains

• It pushes rocks up mountains

• It carries sediment in rivers

• It forms layers of sedimentary rock

What is deposition?

• The breaking of rocks

• The movement of sediment

• The formation of new layers

• The erosion of mountains

Tags

NGSS.MS-ESS2-2