Earth Science - Weathering, soil, and mass movements

What are the two types of weathering?

• Intrusive & Extrusive
• Chemical & Mechanical
• Fast & Slow
• Erosion & Deposition

What is the slowest type of mass movement?

• Creep
• Rockfall
• Landslide
• Slump

What type of mechanical weathering is depicted in this picture?

• Exfoliation
• Organic
• Ice Wedging
• Abrasion

In which environment would chemical weathering occur the fastest?

• warm, dry
• cold, dry
• warm, humid
• cold, humid

Human activities that remove plants covering the soil cause soil erosion to

• decrease

• stay the same

• increase

• increase briefly, then stop

Which of the following best describes a mudflow?

• movement too slow to be observed directly

• material moving downslope as a thick fluid

• material falling freely through the air

• sudden movement along a flat, inclined surface

The process that occurs when physical forces break rock into smaller pieces without changing the rock's chemical composition is called

• exfoliation

• mechanical weathering

• chemical weathering

• erosion

When a rock is exposed to chemical weathering, it

• changes into one or more new compounds.

• breaks into tiny pieces

• splits

• loses its layers

Which of the following is NOT a major component of soil?

• mineral matter

• humus

• air

• earthworms

The main source of organic matter in soil is

• water

• plants

• bacteria

• fungi