Term
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Definition
1. make trenches
1. can have subduction boundary (one plate is pushed under the other plate) or collision boundary (one plate bangs against another plate). |
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Definition
1. make rift valley
1. plates move away from each other |
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Term
| layers of the earth from outside to inside |
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Definition
| crust, mantle, outer core, inner core |
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Term
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Definition
| natural power that acts on an object |
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Term
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Definition
| force that makes objects fall toward earth's center |
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Term
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Definition
| very small fragment of a much larger object |
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Term
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Definition
| energy released in the form of rays or waves |
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Term
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Definition
| group of parts that work together as a whole |
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Term
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Definition
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| flow of water through the earth system |
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Definition
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| flow of rock through the earth system |
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Definition
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Term
| parts of the earth system |
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Definition
1. atmosphere, hydrosphere, geosphere and biosphere
2. sun (major source of energy for the earth) |
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Term
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Definition
1. earth's outermost layer
2. contains the earth's weather |
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Term
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Definition
1. has 3 main parts (a metal core, a solid middle layer and rocky outer layer).
1. nearly all of the earth's mass is contained here |
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Term
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Definition
1. 75% of the earth is covered by water.
2. the hydrosphere contains all of the earth's water |
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Term
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Definition
| the part of the earth that contains living organisms is the biosphere |
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Term
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Definition
1. constructive forces: forces that build up. constructive forces shape the land's surface by building up mountains and other land masses.
2. destructive: forces that destroy. destructive forces destry and wear away land masses through processes like erosion and weathering. |
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Term
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Definition
| wearing down and carrying away of land by natural forces such as water, ice or wind. |
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Term
| how do geologists learn about earth's interior (inside) |
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Definition
two types of evidence
1. direct evidence: rock samples
2. indirect evidence: seismic waves |
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Term
| evidence from rock samples |
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Definition
1. from drills that bring up samples of rock
2. from volcanoes blasting rocks to the surface |
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Term
| evidence from seismic waves |
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Definition
1. seismic waves are produced by earthquakes
2. studying how fast seismic waves move and where they go give us clues about the structure of the planet |
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Term
| 3 main layers of the earth |
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Definition
1. crust
2. mantle
3. core (outer and inner core) |
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Term
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Definition
| force pressing down on an area |
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Term
| the deeper down in the earth, the ___________the pressure |
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Definition
| the deeper down in the earth, the greater the pressure |
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Term
| The deeper down in the earth, the ____________ the temperature |
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Definition
| the deeper down in the earth, the greater the temperature |
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Term
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Definition
| layer of rock that includes both dry land and the ocean floor |
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Term
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Definition
| The mantle is made of rock that is very hot, but solid |
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Term
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Definition
1. lithosphere
2. asthenosphere
3. mesosphere |
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Term
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Definition
1. outer layer: liquid. the outer layer of the earth's core is molten metal.
2. inner layer: solid. inner layer of the earth's core is squeezed so hard that it cannot be a liquid. it is a solid. |
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Term
| which layer is responsible for the earth's magnetic field |
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Definition
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