Lesson 1
A shape of the land, such as a mountain, plain, or plateau
landforms
What are the 4 major landforms?
plateaus, mountains, plains, hills
What forms when when heat and pressure melts rocks inside the earth?
magma
the breaking and changing of rocks
weathering
How do volcanic eruptions and earthquakes change the features of the earth? slowly or quickly
quickly
a mountain formed by hardened lava with an opening through which lava, ashes, rocks, and other materials may come out
volcano
What are landforms that rise at least 600 meters above the land around them?
mountains
What is magma that flows onto the earth's surface?
lava
the moving of weathered rocks and soil by wind, water, or ice
erosion
Watering can cause weathering in 2 ways.
1. Water freezes and melts in cracks in the rocks causing them to break apart over time.
2. Water flows over rocks slowly wearing them away.
the shaking of the ground caused by rock movement along a fault
earthquake
What are flatlands but often have small hills?
plains
What is a volcano that is sleeping and hasn't erupted in recent times?
dorment
a pile of sand formed by the wind
dunes
T or F? Small rocks come from the breaking and weathering of larger rocks.
True
a crack in the earth's crust along which rocks move
fault
What has higher land around them but are flat on the surface or is the flat land between mountain ranges?
plateaus
What is lava that cools and hardens forming a mountain?
volcano
The features of the earth's surface are constantly what by a combination of slow and fast processes?
changing
What can cause weathering by growing in cracks in the rocks and expanding the cracks as their roots grow?
plants and trees
The earth appears blue form space because about three-forths of the earth is covered by what?
water
The surface of the earth is always what?
changing
The crust, or top layer, is made up of large sections of rock called?
plates
How do weathering and erosion change the earth's surface? slowly or quickly
slowly
T or F? Changes in temperature may also cause weathering?
true