Question

1. this question has two parts. first, answer part a. then, answer part b.

part a
during the daytime, there is a breeze that comes off the
ocean and onto the land. this is caused by the uneven
heating of the earths surface. this can be seen in the
image.
what type of energy transfer is occurring?
a. convection
b. conduction
c. radiation
d. specific
part b
which statement best supports your answer to part a?
a. when the suns heat energy warms the air, the conduction in the warmer air sinks down and
brushes up against the land.
b. when the suns heat energy warms the air through convection, the warmer air rises as the cooler air
sinks and the air breezes across the land.
c when the suns specific heat changes the air by 1 degree, the cooler air touches the oceans
surface, cools it down and the newly warm air rises up.
d. when the suns heat energy warms the air through radiation, the heat rises and the cooler air rises
with it causing a spiral of air.

Explanation:

Part A

Convection is the transfer of heat through the movement of fluids (liquids or gases). In the case of the breeze coming off the ocean and onto the land during the daytime, it is due to the uneven heating of the Earth's surface causing the movement of air (a gas), which is characteristic of convection. Conduction is heat transfer through direct contact of solids, radiation is heat transfer through electromagnetic waves (like the Sun's heat reaching Earth), and "specific" is not a type of energy transfer.

Option b correctly describes convection. Convection involves the movement of warmer (less - dense) air rising and cooler (more - dense) air sinking. When the Sun heats the air (through radiation initially, but the transfer within the air is convection), the warmer air rises, and cooler air moves in to take its place, creating the breeze. Option a incorrectly mentions conduction for air movement. Option c has incorrect statements about specific heat (specific heat is a property of a substance, not a process of heat transfer in this context). Option d incorrectly combines radiation and an incorrect description of air movement (cooler air does not rise with the heat in the way described).

Answer:

A. convection

Part B