Weathering, Erosion, and Soil

If it takes 2000 years to weather 1 cm of limestone, how long will it take to weather 5 cm of limestone?

• 400 years
• 5000 years
• 7000 years
• 10,000 years

Which step in the diagram depicts erosion?

• A
• B
• C
• D

What is the process that is occurring from step C to step D?

• deposition
• erosion
• lithification
• weathering

If a sample of soils has a clay loam texture with 40% clay and 40% silt, what possible range of percent of sand would the soil have?

• 45-65%
• 20-45%
• 65-70%
• 70-100%

What would be the texture of a sample of soil that has 15% clay, 25% sand, and 60% silt?

• clay
• silty loam
• sand
• loam

Most of the weathering of Cleopatra's Needle is caused by ______________.

• hydrolysis
• chemical weathering
• oxidation
• frost wedging

In which of the following climates would chemical weathering most readily occur?

• wet and warm
• dry and warm
• wet and cool
• dry and cool

Barrier islands are formed when _________________________.

• the ocean floor is uplifted
• the wind continuously blows sand out to sea
• sand is repeatedly picked up, moved, and deposited by ocean currents
• sand bars are worn away

Which of the following has the potential for most erosion?

• water flowing across a flatland
• wind blowing materials in the air, against the force of gravity
• wind blowing materials down a slope
• water flowing down a steep slope

Which of the following characteristics of water can be responsible for mechanical weathering?

• water flows downstream under gravity
• water expands when it freezes
• water combines with atmospheric gases to form acid rain
• water reacts with and can dissolve many kinds of minerals