1. where does the conversation current in the mantle obtain its heat energy?

a. earths core and crust
b. earths mantle
c. earths core and mantle***
d. earths mantle

2. How do convection currents cause movement of earth's plates?

a. The weathering of rocks in Earth's mantle cause plates to move.
b. The entire cycle of heating, cooling, rising, and sinking of rocks in Earth's mantle causes plates to move.***
c. Convection currents transfer radiation energy to Earth's plates, which causes them to move.
d. Convection currents in the Earth's core and crust cause Earth's plates to move

3. How does cycling of matter occur in Earth's mantle?

a. Hot, soft rock rises from the bottom of the mantle toward the top, cools, and sinks back through the mantle.***
b. Hot, soft rock sinks to the mantle, cools, and rises to Earth's crust.
c. Solid rock rises from the bottom of the mantle, cools, and sinks back through the mantle.
d. Solid rock sinks to Earth's core and then rises to form lava

4. what happens when you touch cold ice with your warm hand?

a. heat only transfers from the ice to your hand
b. heat only transfers from your hand to the ice***
c. heat transfers from the ice to your hand and from your hand to the ice
d. heat does not transfer between the ice and your hand