Unit 3 -Weathering and Erosion Review

How is mechanical weathering defined? What are two examples of mechanical weathering?

• The process where rocks break down into smaller pieces without any change to their chemical composition; examples include ice wedging and abrasion.

• The process where rocks and minerals are broken down by chemical reactions; examples include oxidation and carbonation.

• The process where living organisms break apart rocks; examples include root growth and acid secretion.

• The process where rocks dissolve in water; examples include hydrolysis and dissolution.

How is chemical weathering defined? What are two examples of chemical weathering?

• The process where rocks break down into smaller pieces without any change to their chemical composition; examples include ice wedging and abrasion.

• The process where rocks and minerals are broken down by chemical reactions; examples include oxidation and carbonation.

• The process where living organisms break apart rocks; examples include root growth and acid secretion.

• The process where rocks dissolve in water; examples include hydrolysis and dissolution.

Tags

NGSS.MS-PS1-2

How is biological weathering classified as both mechanical and chemical weathering?

• It involves the physical breakdown of rocks by wind and water.

• It involves living organisms physically breaking rocks and altering their composition through chemical processes.

• It involves the dissolution of rocks in water.

• It involves the freezing and thawing of water in rock cracks.

In which type of climate does chemical weathering occur most?

• Cold, dry climates

• Warm, wet climates

• Hot, arid climates

• Temperate, dry climates

What are the three things that change the rate of weathering?

• Rock composition, climate, and surface area

• Temperature, pressure, and humidity

• Wind speed, altitude, and vegetation

• Soil type, water pH, and sunlight

If any piece of rock is being weathered much quicker than another rock, what must be true about the conditions it's in?

• It is exposed to less moisture and lower temperatures.

• It has a stronger mineral composition.

• It is exposed to conditions with more moisture, higher temperatures, and greater exposure to weathering agents.

• It is located in a desert with no wind or water.

Tags

NGSS.MS-ESS2-2

What is the difference between weathering and erosion?

• Weathering involves the transportation of materials, while erosion breaks down rocks.

• Weathering is the breakdown of rocks, while erosion is the transportation of weathered materials.

• Weathering and erosion are the same processes.

• Erosion only occurs in water, while weathering occurs in air.

What are the four different agents of erosion?

• Water, Wind, Ice, and Fire

• Water, Wind, Ice, and Gravity

• Water, Wind, Sun, and Gravity

• Water, Wind, Ice, and Soil

Define Porosity.

• The ability of a material to conduct electricity.

• The percentage of open space or voids within a rock or sediment.

• The color of a rock or sediment.

• The weight of a rock or sediment.

Define Permeability.

• The ability of a material to reflect light.

• The ability of a material to allow fluids to pass through it.

• The density of a material.

• The temperature at which a material melts.

Tags

NGSS.MS-ESS2-4