Mechanical Weathering
What is mechanical weathering?
breaking rocks into smaller pieces
Which is stronger, carbonic acid or acid rain?
What is the biggest type of particle: clay, silt, sand?
sand
What is deposition?
water, wind, or ice drops sediments off in a new location
How does a sandbar affect shipping commerce?
Ships can get stranded/run aground
What is exfoliation?
sheets of rock peeling away like layers in an onion
A stalagmite is on what part of a cave?
the ground (like mites on the ground)
What do we call the mixture of sand, silt, and clay?
loam
True or False: Heavier sediment drops after lighter sediment.
False
What is plucking?
when a glacier pulls out a piece of bedrock and carries it along
Rocks that have been abraded (abrasion) a lot tend to have what type of edges?
rounded and smooth edges
They excrete acid on the rock, which dissolve it
Define texture in terms of soil.
texture is the amount of each kind of particle in a soil sample
Sediment being deposited on a delta has what shape?
triangle
How is a dust storm different from a sandstorm?
Dust storms pick up silt and clay and can be higher in the air, sandstorms pick up sand and are lower to the ground
What is pressure release?
mechanical weathering that creates cracks and breaks in rock
What is it called when a stalagmite and a stalactite connect and grow together?
a column
What is the first horizon called (on top)?
O horizon
A stream's load includes which two types of loads?
dissolved load and suspended load
Define a moraine.
the deposited soil and rock a glacier has picked up on the way down a mountain
What is a hoodoo?
an unusual rock formation where the top of the rock is harder and wears away slower than the bottom
What are people who explore caves called?
spelunkers
What is in the C horizon?
larger weathered fragments of bedrock, clay and sand, little organic material, minerals
In this mass movement, water combines with soil and produces a heavy and unstable area that slides downhill.
Mudflow
For a glacier to be receding, what has to be happening?
it melts faster than new snow falls