Weathering & Erosion

What is weathering?

• A process that breaks down rocks into smaller pieces

• A shift in weather patterns.

• The process by which mountains are formed

• The process by which the seasons change.

Tags

NGSS.MS-ESS2-2

How might a weathered mountain appear different from an unweathered mountain?

• The weathered mountain would be taller

• The weathered mountain would appear rounder in shape

• The weathered mountain would appear more jagged.

• The weathered mountain would contain fewer trees.

Tags

NGSS.MS-ESS2-2

How is physical weathering different from chemical weathering?

• Chemical weathering happens over a much shorter time frame than physical weathering.

• Chemical weathering occurs in the tropics; physical weathering occurs in temperate climates.

• Chemical weathering occurs in mountains; physical weathering occurs on flat surfaces.

• Chemical weathering changes the chemical composition of materials; physical weathering does not.

What might cause chemical weathering?

• Acid rain

• Violent earthquakes

• Growing plants and expanding ice

• Volcanic eruptions

Tags

NGSS.MS-ESS2-2

What impact does weathering have on soil formation?

• Chemical weathering adds helpful chemicals to the soil.

• Rocks are broken down into smaller pieces, and finally into sediment.

• Mechanical weathering adds ice to the soil, which turns into water.

• Volcanic eruptions contribute metamorphic rocks to the soil.

Tags

NGSS.MS-ESS2-2

What types of rocks are formed from the products of weathering?

• Metamorphic rocks

• Igneous rocks

• Sedimentary rocks

• Volcanic rocks

How long does the weathering process take?

• A few days

• No more than a month

• Exactly one year

• Years and years

Carbonic acid is a mixture of:

• Water and carbon dioxide

• Calcite and quartz

• Oxygen and hydrogen

• Water and limestone

What process hollows out limestone caves?

• Mechanical weathering

• Chemical weathering

• Physical weathering

• Cave weathering

What type of changes does erosion cause?

• Physical changes

• Chemical changes

• Electrical changes

• Magnetic changes

Tags

NGSS.MS-ESS2-2