Erosion and weathering Flashcards
The slow process that breaks rocks into smaller pieces is called ________
Weathering
A rock is broken apart by _______ weathering if the rock type does not change
Physical
If a rock contains iron, air and water can react with the iron through ______ and form rust
Chemical weathering
The weathering and removal of rock from one place to another is called ________
Erosion
Erosion can be caused by glacials, wind, moving water and _________
Gravity
When the Colorado river eroded the land around the river in Arizona, the _______ was formed
Grand Canyon
Glacials form in very cold places as thick _______ of ice
Sheets
As the weight of the overlying ice increases, the glacier begins to _______
Flow
Deposits left behind a glacier are called _____ and ______
Glacials debris and glacial till
The mounds that form where till builds up are called _______
Moraines
Most processes change slowly slowly. But people can make ________ changes
Faster
People change the land by _____ it to get minerals, metals, or fuels
Mining
Critical thinking : which do you think changes land more : frozen water or flowing water
Flowing water because flowing water is moving. Flowing after can pick up dirt, rocks, trash and branches. Then deliver them in different locations.