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Java Games: Flashcards, matching, concentration, and word search. |
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7th Grade Science_Earth's Layers
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| A | B |
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| inner core | a solid ball in the center of the Earth, made mainly of iron |
| outer core | liquid and made mainly of iron and nickel; cause the Earth's magnetic field. |
| convection currents in the mantle | They cause movement of Earth’s plates. |
| mantle | thickest layer of the Earth. Most is motlen rock. |
| crust | thinnest layer of the Earth, mainly made of basalt and granite; lithosphere |
| 2,900 km | How thick is the mantle? |
| divergent boundaries | constructive (building) boundaries, midocean ridges |
| convergent boundaries | desctructive boundaries, trenches along the ocean bottom |
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Chinese Bilingual Teacher, grades 6 to 12 |
West Windsor-Plainsboro High School South / Community Middle School |
| Princeton Jct., NJ |
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