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Why does hot air rise from pavement on a hot summer day?(1 point)
Responses

Due to convection
Due to convection

Due to conduction
Due to conduction

Due to insulation
Due to insulation

Due to radiation​​​​
Due to radiation ​​​​
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The correct answer is:

Due to convection.

how

Hot air rises from the pavement on a hot summer day due to convection. Convection is the process by which heat is transferred through a fluid (in this case, the air) when warmer, less dense fluid rises and is replaced by cooler, denser fluid. As the pavement absorbs heat from the sun, it transfers that heat to the air molecules in direct contact with it. These heated air molecules become less dense and rise, creating a convection current that carries the hot air upward. This is why you may feel a rising heat sensation when standing near pavement on a hot day.

Which investigation shows the transfer of heat energy in the absence of matter?(1 point)

Responses

Using electromagnetic waves to investigate radiation
Using electromagnetic waves to investigate radiation

Using particle movement through a solid to investigate conduction
Using particle movement through a solid to investigate conduction

Using a current through fluid to investigate radiation
Using a current through fluid to investigate radiation

Using particles in space colliding to investigate conduction

The correct answer is:

Using electromagnetic waves to investigate radiation.

how

Using electromagnetic waves to investigate radiation demonstrates the transfer of heat energy in the absence of matter. Electromagnetic waves, such as infrared radiation, can transfer heat energy without the need for any physical substance or matter. These waves can travel through space and transfer heat energy from a source to a receiver without any direct contact between the two. This is why we can feel the warmth of the sun even though there is no physical medium between us and the sun for heat conduction. Electromagnetic waves are an example of how heat energy can be transferred through radiation.