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Volcano Quiz 1 Before lava reaches the surface it is called A B C D 2 highly magnetic less dense than the surrounding solid material more dense than the surrounding solid material highly fluid The long tube in the ground that connects the magma chamber to Earth's surface is called the A B C D 7 A part of the mid ocean ridge a subducting plate An island arc A hot spot Magma flows upward through cracks in rock because it is A B C D 6 The ring of fire Continental Drift Volcanoes forming along plate boundaries Volcanoes forming over a Hot Spot The volcanoes along converging plate boundaries may form A B C D 5 North American Mountain ranges Islands in the Pacific Ocean The coast of Antarctica The boundaries of Earth's plates The formation of the Hawaiian Islands is one example of A B C D 4 magma liquid fire volcanic ash rock Volcanic belts form along A B C D 3 Page 1 pipe side vent vent crater What provides the force that causes magma to erupt to the surface? A B C D gravity in the lithosphere dissolved gasses trapped in the magma the density of the magma the silica in the magma 1/17/2011 2:28:08 PM Volcano Quiz 8 Pahoehoe is A B C D 9 a cooler, slower-moving lava lava with a rough, chunky surface fast-moving, hot lava volcanic ash Which of the following helps determine how easily magma flows? A B C D 10 Page 2 The amount of silica in the magma The number of vents in the volcano The diameter of the pipe The size of the crater What is magma called after it leaves the volcano? A B C D magma lava Asthenosphere hot rock 1/17/2011 2:28:08 PM Volcano Quiz Page 3 Answer Key : Volcano Quiz Question: 1 2 3 4 5 6 7 8 9 10 1/17/2011 2:28:08 PM Answer A D D C B A B C B