1). Increasing temperatures lead to decreasing ice coverage. Decreasing ice cove

Question

1). Increasing temperatures lead to decreasing ice coverage. Decreasing ice coverage leads to ________ ocean heat flux to the atmosphere. This is a ________ feedback.

2). During which time period were the Earth’s continents the least spread out?

3). Earth’s lithosphere is divided in _____ rigid plates that flow on viscous material of the _______.

4). Mantle circulation is a result of ___________.

5). Geophysicists measure ________ waves to determine the internal structure of the Earth. Only solid structures transmit ________ waves, while both solids and fluids can transmit _________ waves.

Explanation / Answer

1. a. Decreasing; positive

4. a .Convection

5. b . Seismic; S; P

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