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tectonic : the ________ plates move a few inches a year.
volcanoes : _________ can erupt at any time, even if it hasn't erupted in a thousand years.
seismograms : ___________ record how powerful a eathquake is.
seismographs : ____________ are the pictures seismograms create.
layers : there are four ______ in the Earth.
continental : ___________ crust is under land.
oceanic : _______ crust is under the water.
theory : Alfred Wegener had a ______ about all the continents together at one point.
Pangea : Wegener called this merge of continents ______.
magma : before lava comes out of the volcano, it is called _____.
Across:| 3. | there are four ______ in the Earth. | | 4. | _________ can erupt at any time, even if it hasn't erupted in a thousand years. | | 6. | _______ crust is under the water. | | 7. | before lava comes out of the volcano, it is called _____. | | 9. | Alfred Wegener had a ______ about all the continents together at one point. |
| | Down:| 1. | Wegener called this merge of continents ______. | | 2. | the ________ plates move a few inches a year. | | 5. | ____________ are the pictures seismograms create. | | 8. | ___________ record how powerful a eathquake is. |
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Across:| 3. | there are four ______ in the Earth. | | 4. | _________ can erupt at any time, even if it hasn't erupted in a thousand years. | | 6. | _______ crust is under the water. | | 7. | before lava comes out of the volcano, it is called _____. | | 9. | Alfred Wegener had a ______ about all the continents together at one point. |
| | Down:| 1. | Wegener called this merge of continents ______. | | 2. | the ________ plates move a few inches a year. | | 5. | ____________ are the pictures seismograms create. | | 8. | ___________ record how powerful a eathquake is. |
| |
© 2014
PuzzleFast.com, Noncommercial Use Only