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26 terms

Layers of Earth, earthquakes, volcanoes and landforms Test

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fault
break in the Earth's crust along which rocks move
core
deepest layer of Earth, at the center of the Earth
glacier
a huge mass of ice that moves slowly and erodes the land
epicenter
point on Earth's surface right above the focus of an earthquake
soil
tiny bits of rock, mixed with decayed organisms in which plants can grow
focus
underground point where an earthquake first starts
seismograph
instrument that records earthquake waves
frost action
the breaking aprat of rocks by freezing water pushing against the sides in rocks
crust
they layer of Earth that includes land and ocean floor, what we stand on
plates
continental-sized slabs that make up the crust and upper mantle
weathering
the breaking down of rocks
erosion
the wearing away and moving of materials by water, wind and ice
hills
rise higher than the land around it but not as high as a mountain
earthquake
the shaking of the Earth's crust
mantle
thickest layer of the Earth, made of solid and melted rock
plateau
rises above the land around it, but is flat on top
mountain
highest form of land on Earth
Ice Age
a period of time when part of the Earth was covered by glaciers
valley
low land between a group of mountains or hills
volcano
a mountain that forms when melted rock flows through a crack onton the Earth's surface
lava
melted rock that reaches Earth's surface
crater
a large basin formed at the top of a volcano
magma
melted earth inside Earth
magma chamber
an underground pool that holds hot magma
vent
a rocky opening through which magma flows
Richter Scale
a scale by which scientists can measure an earthquake