Changing Landforms
Mountains, Volcanoes, Earthquakes
How Earth's Surface has Changed
Miscellaneous
Critical Thinking
100
physical features on the surface of the Earth
landforms
100
the outer layer of the Earth made of rock
the crust
100
the theory of how Earth's continents move over its surface
theory of continental drift
100
a break in the Earth's crust where a piece of the crust moves
fault
100
beginning with the outermost layer, Earth's layers are:
crust, mantle, core
200
the process of breaking down rock into silk, clay, and other tiny pieces called sediment
weathering
200
the layer solid layer of rock beneath the Earth's crust
mantle (upper or lower)
200
a "supercontinent" of land that existed over 225 millions years ago
Pangea
200
the center of the Earth
core
200
if the mantle were solid rock, what feature would not form on the surface of the Earth?
volcanoes, because there would be no liquid magma to flow up through the crust and erupt as lava
300
the process of moving sediment from one place to another
erosion
300
molten rock from Earth's surface
magma
300
the remains or traces of past life found in rocks
fossils
300
the downhill movement of rock and soil because of gravity
mass movement
300
what happens first, weathering or erosion? give an example
weathering occurs first. water breaks down rock into small pieces and then sediment can be taken away
400
the process of dropping, or depositing sediment in a new location
deposition
400
a mountain formed by lava and ash
volcano
400
the name of the man who came up with the theory of continental drift
Alfred Wegener
400
rigid block of Earth's crust and upper mantle that fit together like puzzle pieces
plates or tectonic plates
400
how do fossils show that rock at the tops of mountains was once under water?
fossils of sea organisms have been found there
500
name the 3 major agents of weathering and erosion
wind, water, ice
500
the shaking of the ground caused by a sudden release of energy in the Earth's crust
earthquake
500
how did scientists use fossils to prove the theory of continental drift
they found fossils of similar plants in animals on continents that are now widely spread apart, like Africa and South America
500
when magma reaches the surface or exterior of a volcano 
lava
500
name 2 natural forces that can cause SUDDEN change, and 2 natural forces that can cause SLOW change
volcanic eruptions, earthquakes, hurricanes

moving water, rain, glaciers

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