Question

question 4
6.25 pt
near the ceiling of a room the air is warmer. the warm air rises because of select

question 5
6.25 pts
a college student holds the back of his hand near an iron to see if it is hot. heat is transferred to his hand by select

question 6
6.25 pts
a heater is placed under one corner of a water bed mattress. warm water moves throughout the mattress because of

Explanation:

• Question 4: Warm air is less dense than cold air, so it rises due to buoyancy, which is a result of convection.
• Question 5: When the hand is near the iron without touching it, heat transfer occurs via radiation as heat - carrying electromagnetic waves travel from the iron to the hand.
• Question 6: The movement of warm water throughout the mattress is due to convection currents. Warmer water is less dense and rises, while cooler water is more dense and sinks, creating a circulation pattern.

Answer:

Question 4: Convection
Question 5: Radiation
Question 6: Convection