Term
| The main evidence that the universe is expanding? |
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Definition
| The Doppler shift of light coming from the stars |
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Term
| Gravitational attraction increases when? |
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Definition
| 2 objects approach each other |
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Term
Which of the following are not radioactive emissions?
Protons, Neutrons, Electrons |
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Definition
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Term
| The 8 most abundant elements of the earth? |
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Definition
1. oxygen
2. silicon
3. aluminum
4. iron
5. magnesium
6. calcium
7. sodium
8. potassium |
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Term
| Moh's hardness scale: 1-10 |
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Definition
1. talc
2. gypsum
3. calcite
4. fluorite
5. apatite
6. orthoclase
7. quartz
8. topaz
9. corundum
10. diamonds |
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Term
| The chemical formula for Calcite and Quartz? |
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Definition
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Term
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Definition
| an Aggregate or mass of mineral matter |
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Term
| Large body of magma that crystallizes before reaches the surface? |
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Definition
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Term
| Limestone are identified by their? |
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Definition
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Term
| Absolute time is measured by? |
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Definition
| Radioactive decay of atom |
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Term
| Mt. Vesuvius characteristics: |
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Definition
occured in 79 AD
destroyed Pompeii and Herculaneum
Pyroclastic flow was most destructive
People died b/c of covering of Ash |
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Term
| The major population centers: |
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Definition
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Term
| Granitic magma leads to explosive volcanic eruptions because |
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Definition
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