General
Chemical Weathering
Rivers
Physical Weathering
Random Earth Science
100
What do we call a bunch of little rocks that have broken down over time?
Sediments
100
What is the definition of weathering?
When rocks are degraded (broken down) by the elements / weather
100
What is deposition?
When sediments are laid down, or deposited, due to erosion
100
What is abrasion?
The smoothing and rounding of rocks due to friction
100
The gemstone emerald is typically what color?
Green
200
Roots growing into cracks in rocks and forcing the cracks to widen is an example of what type of weathering?
Physical weathering
200
What is one example of chemical weathering that occurs in nature?
Carbonation, rusting, acid rain
200
How does abrasion occur in rivers?
Rocks are tumbles around by currents which causes them to become smaller and smooth
200
When potholes form after cold winter nights and sunny winter days, what type of physical weathering is occurring?
Frost action
200
What do you call molten rock before it has erupted?
Magma
300
What is the definition of erosion?
The process in which rock is carried away by wind or water.
300
What type of climate is chemical weathering most likely to occur in?
Warm, damp climates
300
What is the role of erosion in forming rivers?
The velocity of water over time wears away at rock and earth carving out a path
300
What is one way chemical and physical weathering are alike?
They both cause the degradation (breaking down/wearing away) of rock
300
What is the name of the largest ocean on Earth?
-Atlantic Ocean
-Indian Ocean
-Pacific Ocean
-Arctic Ocean
Pacific Ocean
400
What type of weathering is most common in hot, dry, desert-like areas?
Physical weathering
400
What is a factor that impacts how quickly something erodes?
The chemical composition (make up) or the climate / weather
400
Why do rivers meander (curve)?
Due to the wearing away of banks, flow velocity, and sediment deposition
400
Give an example of physical weathering caused by temperature changes.
Expansion (getting bigger due to heat) & Contraction (getting smaller due to cooling)
400
Do stalactites rise from the floor or hang from the ceiling of limestone caves?
Hang from the ceiling
500
How does the process of weathering set the stage for the transportation of sediment by erosional forces?
Weathering causes rocks to break down. One these rocks have been broken down they can be eroded away by wind, rain, or water.
500
Why is chemical weathering called "chemical weathering?"
Rocks interact with minerals causing a chemical reaction which changes the composition of the rock itself
500
What is a delta?
A landform that is created at the end of a river where sediments are deposited
500
What is exfoliation?
A type of physical weathering where rock slides off in sheets
500
Someone who studies rocks is known as a...?
Geologist