Weathering

What is weathering?

• A process that break rocks down 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 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

What can you infer about ice from the information presented in the movie?

• It usually causes 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 (carbonation)

• Rusting (oxidation)

• Growing plants and expanding ice

• Volcanic eruptions

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 by 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

Tags

NGSS.MS-ESS2-2

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-ESS2-4