Weathering, Erosion, and Deposition

What is weathering?

• Weathering is the breakdown of rocks and minerals at the Earth's surface.

• Weathering is the formation of clouds in the atmosphere.

• Weathering is the process of creating new rocks.

• Weathering refers to the movement of tectonic plates.

What are the two main types of weathering?

• Erosional weathering and gravitational weathering

• Physical weathering and chemical weathering

• Biological weathering and thermal weathering

• Physical weathering and atmospheric weathering

What is physical weathering?

• Physical weathering is the mechanical breakdown of rocks into smaller fragments.

• Chemical alteration of minerals in rocks.

• The formation of new rocks from magma.

• The process of transporting rocks by wind and water.

How does temperature change contribute to physical weathering?

• Temperature changes contribute to physical weathering by causing rocks to expand and contract, leading to cracks and fragmentation.

• Temperature variations result in chemical reactions that dissolve rocks.

• Temperature fluctuations lead to increased moisture absorption in rocks.

• Temperature changes cause rocks to melt and reshape.

What role do plants play in physical weathering?

• Plants play a role in physical weathering by breaking down rocks through root growth and pressure.

• Plants absorb water and nutrients from rocks.

• Plants provide shade that prevents weathering.

• Plants create soil but do not affect rock structure.

What is chemical weathering?

• The process of rocks being physically broken apart by wind and water.

• The formation of new minerals in rocks due to heat and pressure.

• Chemical weathering is the breakdown of rocks through chemical reactions.

• The transportation of sediments from one location to another.

How does chemical weathering change the composition of rocks?

• Chemical weathering only affects the surface appearance of rocks.

• Chemical weathering has no effect on the minerals in rocks.

• Chemical weathering changes the composition of rocks by altering their minerals and forming new substances.

• Chemical weathering makes rocks harder and more durable.

What are some agents of chemical weathering?

• Heat and pressure

• Sand, clay, and silt

• Magnetic fields

• Water, acids, oxygen, carbon dioxide

How do underground caves form?

• Underground caves form through the dissolution of soluble rocks, primarily limestone, by acidic water.

• Caves are formed from the erosion of sand by wind.

• Caves are created by the movement of tectonic plates.

• Caves are formed by volcanic activity.

What is erosion?

• Erosion is the wearing away and removal of surface material by natural forces.

• Erosion is the buildup of soil and rocks in a specific area.

• Erosion is the process of creating new landforms through volcanic activity.

• Erosion is the process of planting trees to prevent soil loss.