Soil Types
What is humus?
Decayed organic material found in soil.
What is mechanical weathering?
Answer: The breaking down of rocks without changing their chemical composition
What is erosion?
Answer: The process of moving weathered material from one place to another.
What is deposition?
Answer: The dropping of sediment and rocks in a new location.
What is the difference between weathering and erosion?
Answer: Weathering is the breaking down of rocks, while erosion is the moving of weathered material.
What are horizons?
Layers of soil
What is chemical weathering?
Answer: The process that changes rocks into new substances.
What is gravity's role in erosion?
Answer: It pulls materials down, causing landslides or rockslides.
How does a glacier form?
Answer: When unmelted snow gets compacted down into ice.
Why do sediments settle in layers?
Answer: Sediment settles according to its weight, with heavier particles dropping first.
What is loam?
Answer: A fertile soil that has equal parts of sand and silt combined with about half as much clay.
What is abrasion?
Answer: The process of rocks rubbing against each other.
What is deflation?
Answer: The removal of loose, fine-grained particles by wind.
What is the rock cycle?
Answer: The process of rock changing from one type to another.
How does a narrow stream affect erosion?
Answer: It causes the water to flow faster, increasing erosion and deepening the streambed.
What is a delta?
Answer: An area of sediment deposited at the mouth of a river.
What causes frost heaving?
Answer: Freezing and thawing of water in soil.
What is a rockslide?
Answer: An example of erosion caused by gravity.
What is acid rain?
Answer: Rain that contains harmful chemicals that can cause weathering.
What causes weathering of bronze statues?
Answer: Acid rain may cause the weathering.
What is bedrock?
Answer: Unweathered rock that influences the soil above it.
What is oxidation?
Answer: A chemical weathering process where oxygen reacts with minerals.
What is sediment?
Answer: The material carried by a stream.
What is exfoliation?
Answer: The process of layers of rock being stripped away.
Describe the impact of acid rain on structures.
Answer: Acid rain can dissolve metals and discolor materials, damaging structures.