Conclusions: 1. What you observed is called a convection current. What caused the convection current to begin?in others?)
How do plates move where convection currents are rising? Where does the heat that drives mantle convection come from? Who discovered convection currents? What is the pressure of the Earth's mantle? How do scientists know there is convection in the mantle?
Magmain the Earth's mantle moves in convection currents. The hot core heats the material above it, causing it to rise toward the crust, where it cools. The heat comes from the intense pressure on the rock, combined with the energy released from the naturalradioactive decayof elements. The ...
and rises upward. This pushes cooler rock downward. The cycle repeats, creating convection currents. This churning motion in the mantle appears to be a major factor in plate movement. The plates—and thus the continents—are still moving today, at an average rate of less than five inches per...