A student models convection currents in a laboratory activity. How are the convection currents in the student’s model different from the convection currents in Earth’s atmosphere and oceans?
Cold air in Earth’s atmosphere and cold water in Earth’s oceans are less dense than warm air and warm water instead of being more dense.
Convection cells in Earth’s atmosphere and oceans flow in the same direction instead of opposite directions.
The warm air in Earth’s atmosphere and the warm water in Earth’s oceans sink instead of rise.
The heat source for Earth’s atmosphere and oceans is the sun, which heats from above instead of below.