8, Molten rock on earth\'s surface is called- when below the surface it is calle

Question

8, Molten rock on earth's surface is called- when below the surface it is called a) magma; lava b) igneous; metamorphic c) lava; magma d) both the same . A squall line can occur a) b) c) d) At boundary of the outer core At the boundary of climate regions As a result of coastal fog At the zone of contact between cold and warm air masses I0. Determining the age of the ocean floor in relation to Divergent Boundaries has revealed the following a) Ocecanic crust to the west of divergent boundaries is older than crust to the east b) The closer c) The closer to the divergent boundary, the more recent the crust d) Age of seafloor has no relation to Divergent Boundaries to the divergent boundary, the older the crust 11. Scientists use the term Rain Shadow Effect to describe which of the following? a) b) c) d) Dark shadows cast by dense rain clouds The long-term effect of a strong precipitation event Rainy conditions on the windward side of a mountain range Arid conditions on the leeward side of a mountain range 12. High, thin clouds are known as_ called clouds with a clear horizontal development are a) Cumulus; stratus b) Cirrus; stratiform c) Nimbus: stratiform d) Cirrus; Nimbus 13. The flow of mud initiated by a volcanic eruption is called a(n) and volcanic debris that sweeps down the flanks of a volcano is called a : a mixture of hot gas, ash Lahar; pyroclastic flow a) b) Inundation; ash flovw c) Volcanic flood; ash flow d) Pyroclastic flow; Lahar 14. Assuming water vapor content remains the same, a decrease in temperature of an air mass causes what change in relative humidity? a) Increase b) Decrease c) No change

Explanation / Answer

8) C. Lava, magma

Molten rock is called magma when it is below the Earth's surface and lava when it is above

11) d. Arid conditions on the leeward side of the mountain range

The mountains block the passage of rain-producing weather systems casting a "shadow" of dryness behind them. Incoming warm and moist air are "pulled" by the prevailing winds towards the top of the mountains where it condenses and precipitates before it crosses the top. The air, without much moisture left, advances behind the mountains creating a dryer side called "rain shadow

12) d. Cirrus, Nimbus

Cirrus clouds are higher level clouds that develop in filaments or patches. They are virtually brilliant white attributed to their ice crystal composition. However, they lack in contrast between the top and base. They occur in flat sheets with a low height to base ratio and are usually isolated with large breaks of the sky.

13) A. Lahar, Pyroclastic flow

Lahars generally occur on or near stratovolcanoes, such as those of the Aleutian volcanic arc in Alaska and the Cascade Range in the Western U.S.Eruptions may trigger lahars by melting snow and ice or by ejecting water from a crater lake

Pyroclastic flows are fluidized masses of rock fragments and gases that move rapidly in response to gravity. Pyroclastic flows can form in several different ways. They can form when an eruption column collapses, or as the result of gravitational collapse or explosion on a lava dome or lava flow

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