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7thGrInsideCh1Sec1&2
7th Grade Inside Earth Chapter 1 Section 1 & 2
Question | Answer |
---|---|
seismic waves | waves caused by earthquakes |
pressure | a force pressing on an area |
basalt | dark rock with a fine texture |
granite | rock usually light in color with a coarse texture |
mantle | a layer of hot rock |
lithosphere | uppermost part of the mantle and the crust together form a rigid layer |
asthenosphere | a soft layer of the mantle |
outer core | layer of molten metal that surrounds the inner core |
inner core | a dense ball of solid metal |
conduction | heat transfer within a material or between materials that are touching |
convection | heat transfer by the movement of currents within a fluid |
density | a measure of how much mass there is in a volume of a substance |