Question

why does the air near the ceiling feel warmer than the air near the floor?
radiation pushes heat upward.
cooler air rises while warmer air sinks.
conduction moves heat directly upward.
warm air rises because of convection currents.
question 4 1 pts
how does heat from the sun reach earth through space?
by moving air molecules
by conduction through solids
by convection in gases
by radiation through waves

Explanation:

• For the first question:
• Radiation does not "push" heat upward. Conduction is heat transfer through direct contact and not directly moving heat upward in the described context. It is the opposite of what happens with air density - warmer air is less dense and rises (convection currents), while cooler air is denser and sinks.
• For the second question:
• Space is mostly a vacuum (no air molecules for convection involving air or conduction through solids as there are no solids in the vast expanse of space in the context of Sun - Earth heat transfer). Heat from the Sun reaches Earth via electromagnetic waves (radiation).

Answer:

• First question: Warm air rises because of convection currents.
• Second question: By radiation through waves.