1. When solar energy heats the ground and warms the air above it, the warm air rises and cooler air moves in to replace it. This movement of air is known as

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of