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What is a variable: A letter that represents a number

A _____________ is a mountain that builds up around an opening in Earth's crust: volcano. Movements in Earth's crust caused by a sudden shift in Earth's plates are _____________: earthquakes. Flooding can cause: landslides.. What force causes landslides: gravity. Landslides and Volcanoes are examples of ________ changes in Earth's surface: rapid. When a large amount of loose rock and soil move rapidly, a ____________ occurs: landslide. A volcano can directly change Earth’s surface by : building up layers of hardened lava. Which of the following is one way an earthquake affects the Earth: Large cracks suddenly form in the ground.. Which would be an example of a rapid change to the Earth’s surface: A mountain forming due to volcanic eruptions. The picture shows an island in the middle of the ocean that increased in size in only a few weeks. Which of the following most likely caused this rapid change in the island: Eruptions of a volcano. Which of the following best describes how earthquakes change the Earth’s surface? Earthquakes : violently shift the surface of the earth. The rock layers pictures here have split and been shifted. What most likely caused this change: Earthquake