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earthsci final 21-40
final q's 21-40
Question | Answer |
---|---|
21.What part of the North American craton is visible? ecw | The Canadian Shield |
Name the contienents that created the South Appachians? ECW | N. America and Africa. |
What are Terranes JM | are rocks moved long distances before reaching a continent |
Blowouts and desaertpavement are the reslt of what | wind erosion |
What type of boundary is the San Andreas Faut JM | Sliding boundary |
What does Accretion do JM | adds rock material to continents |
What do you call a hot rock? JM | Block |
what do you call solid material that is thrown from a volcano? JM | Tephra |
Where does Molthen rock form? JM | In the asthenosphere at hot spots, and under hot spots |
What changes the composition of Molthen rock at its surface? JM | Trapped gas |
What do you call depressions at the top of volcanoes? JM | Craters |
What is the name for the tube that connects magma to the volcanoes opening? JM | Vents |
What do you call domed shaped masses of igneious rock? | Laccoliths |
kjh | (blank) |
quiet eruptions are a charateristic of what type of volcano? JM | A developing volcano on a continental shelf |
What are sheild cones primarily made of? JM | Lava |
What are DIkes and Sills composed of? JM | Basalt |
Waht is the name of our solar systems biggest volcano cone? | Olympus Mons On Mars |
What are black Sandy beaches formed from? JM | Erupted mafic magma |