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Type: Multiple-Choice
Category: Earth's Layers
Level: Grade 7
Score: 2
Author: laurie2962
Last Modified: 12 years ago

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Earth's Layers Question

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Grade 7 Earth's Layers

Convection current is
  1. transfer of heat energy in a fluid.
  2. movement of material caused by differences in temperature.
  3. direct transfer of heat energy from one substance to another.