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C Lesson 5
4th grade Science
Question | Answer |
---|---|
earthquake | movement or vibration in rocks that makes up Earth's crust. |
fault | a break in Earth's outer layer caused by movement of rocks. |
seismic wave | a vibration caused by rocks moving and breaking along faults. |
crust | solid rock that makes up the moon's and earth's outermost layers. |
mantle | the layer of rock lying below the crust. |
outer core | a liquid layer of earth lying below the mantle. |
inner core | a sphere of solid material at the center of the moon and earth. |