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chaptrer 3
| Question | Answer |
|---|---|
| What is a volcano? | A volcano is a weak spot in the crust where molten material or magma comes to the surface. |
| Magma and lava are similar and different. How are they the same? How are magma and lava different? | Magma is a molten mixture of rock forming substances, gasses and water from the mantle lava after lava has cooled it forms solid rock. |
| Where is the Ring of Fire located? | Around the pacific ocean |
| What is an island arc? | An island arc is the curve of an island arc echoes the curve of its deep pecan trench |
| Looking at the diagram on p. 91, what popular islands were formed by hot spots in the crust? | hawaii,maui,oahu,kauai |
| Which island is the second youngest? | Hawaii is the youngest because it is the biggest and it is still somewhat forming |
| Which Hawaiian island is the oldest on the map below? | Kauai is the oldest because it is the smallest and the oldest because it have been aging |
| Where did shield volcanoes get their name | Because they look like a shield |
| Describe how a cinder-cone volcano is made | They form after violent eruptions blow lava fragments into the air, which then solidify and fall as cinders around the volcanic vent |
| What makes a composite volcano different from the other types | tall, symetrically shaped, with steep sides, sometimes rising 10,000 feet high |
| What is a lava plateau | Land created by lava |
| What is a batholith | a type of igneous rock that forms when magma rises into the earth's crust, but does not erupt onto the surface |
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flewellingaid12
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