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Earth's STructure
| Question | Answer |
|---|---|
| What is stratigraphic superposition? | Each layer of rock on earth is older than the layer above it. |
| Remains or impressions of a living organism. | a. Fossil |
| 3. How old is the earth? | a. 4.6 Billion years |
| What is the outermost layer of the earth? | a. Crust |
| What is the thinnest layer of the earth? | a. Crust |
| Which layer is between the crust and core? | a. Mantle |
| Magma is | melted rock |
| 8. The most dense layer of the earth is the | core |
| 9. The earth’s core is made of | iron and nickel |
| 10. The part of the crust where we live is the | continental crust |
| The part of the crust at the bottom of the ocean is the | oceanic crust |
| Continents drifting apart is called | continental drift |
| What is probably the force that moves continents? | convection currents in the mantle |
| When two tectonic plates move toward one another | convergent boundaries |
| A crack in the earth’s crust is called a | fault |
| A mountain formed from lava and rocks is called a | volcano |
| When magma reaches the earth’s surface, we call it | lava |
| Rocks formed from melted magma or lava are called | igneous |
| When little particles of weathered rocks stick together to make a bigger rock it is called | sedimentary |
| Rocks changed by heat and pressure under the earth’s surface are called | metamorphic |
Created by:
elcamino504
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