Weathering
True or False:
Weathering always happens quickly.
False
Name one landform created by river erosion.
Canyons or Valleys
What is deposition?
When wind or water drops sediment in a new place.
What is a destructive force?
A process that breaks down land.
What are the two main types of weathering?
Mechanical and Chemical
What is the most powerful agent of erosion on Earth?
Water
What is responsible for forming river deltas and salt marshes?
Flowing water
When tectonic plates shift, what destructive force happens?
An Earthquake
What is Weathering?
The process of breaking down rocks into smaller pieces.
Besides water, what natural force helped shape and smooth the rocks of the Grand Canyon?
Wind Erosion.
What is a delta?
A landform created by the deposit of sediment by a river.
List 3 Destructive Forces
What do plant roots do that causes rocks to crack?
Grow into them and split/break the rock apart
Which type of erosion happens when strong ocean waves wash away sand from a beach?
coastal erosion
Why does deposition happen when a river slows down?
It can’t carry heavy sediments anymore
What is the process of moving rock from below the surface of the Earth to the surface?
Volcanic Activity
How does weathering prepare rocks for erosion?
By breaking them down into smaller, looser fragments or dissolved substances.
What is a meander?
The name for a curve or bend in a river caused by erosion.
What are large piles of rock and unescorted debris that are deposited by glaciers as they melt and retreat?
A Moraine?
How does a volcano build and break land?
They can build new land when the lava hardens after an eruption. They can also break land by destroying existing landforms.