Weathering

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 seasons change.

Tags

NGSS.MS-ESS2-2

How might a weathering 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

What can you tell me about ice from this picture?

• It usually cases chemical weathering.

• It expands as it freezes.

• It barely causes weathering at all.

• It does not exert pressure on rocks.

How is mechanical weathering different from chemical weathering?

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

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

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

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

What might cause mechanical 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-ESS2-1

NGSS.MS-ESS2-2

What types of rocks are formed by weathering?

• Metamorphic rocks

• Igneous rocks

• Sedimentary rocks

• Volcanic rocks

Tags

NGSS.MS-ESS2-1

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

• Spatial weathering

• Cave weathering

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4