Mission 2: Weathering, Erosion, and Soil

The growth of plant roots and animal activity may result in ________________.

• erosion
• mechanical weathering
• chemical weathering
• abrasion

Tags

NGSS.MS-ESS2-2

The definition of weathering is _______________________.

• the carrying away of rock
• the leaching of rock
• the breaking down of rock
• the permeability of rock

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is called _______________.

• plant growth
• oxygen
• abrasion
• ice wedging

Tags

NGSS.MS-ESS2-2

The most important factors in determining the rate of weathering are _____________________.

• carbon dioxide and acid rain

• abrasion and acids from plant roots

• animal actions and oxygen

• rock type/mineral composition and climate

What kind of weathering causes the mineral composition of rock to change?

• mechanical weathering
• permeable weathering
• chemical weathering
• general weathering

Mechanical weathering is the removal of rock particles by gravity, wind, water, and ice.

• true
• false

Which of the following is a type of mechanical weathering?

• abrasion
• plant growth
• freezing and thawing
• all of the above

What is the relationship between wind erosion and plant cover?

• More plants means less erosion
• More plants means more erosion
• There is no relationship
• Less plant cover means less erosion

Tags

NGSS.MS-LS2-4

When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?

• sand
• silt
• clay
• humus

Tags

NGSS.MS-LS2-3

What force causes all types of mass movement?

• convection
• temperature
• gravity
• compaction

Tags

NGSS.MS-ESS2-2

NGSS.MS-PS2-5