Question 1: On a cold day, why does a metal doorknob feel colder than the wooden door?
Question 2: Why is it incorrect to say that, when a hot object warms a cold one, the increase in temperature of the cold one is equal to the decrease in temperature of the hot one? When is this statement correct?
Question 3: Air density is normally less above any point in air than below, providing a " migration window" in air. How does this affect the movement of faster- moving molecules in air?
Question 4: When there is morning frost on the grass in an open park, why is frost unlikely to be found on the ground directly beneath park benches?