Heat Transfer (Atmospheric Heating)

Front

What is the definition of CONDUCTION?

Back

When heat transfers from objects that are touching.

Answer explanation

Conduction is defined as the transfer of heat through direct contact between objects. This occurs when two surfaces at different temperatures touch, allowing heat to flow from the hotter object to the cooler one.

Front

What kind of heat transfer happens when the sun is heating your body?

Back

Radiation

Answer explanation

The sun heats your body primarily through radiation, which is the transfer of heat in the form of electromagnetic waves. Unlike conduction and convection, radiation does not require a medium to transfer heat.

Front

What heat transfer happens when you burn your hand by touching a fire?

Back

Conduction

Answer explanation

When you touch fire, heat is transferred directly from the hot surface to your skin through conduction. This direct contact allows thermal energy to flow, causing a burn.

Front

Warm air rises and the cool air sinks demonstrates this type of heat transfer.

Back

convection

Answer explanation

Warm air rises and cool air sinks is a characteristic of convection, where heat is transferred through the movement of fluids. Conduction involves direct contact, and radiation does not require a medium, making convection the correct choice.

Front

Ironing a shirt is an example of...

Back

conduction

Answer explanation

Ironing a shirt involves applying heat from the iron directly to the fabric, which transfers thermal energy through direct contact. This process is an example of conduction, where heat moves through materials.

Front

Warm air is __________ dense than cold air and rises creating convection currents.

Back

less

Answer explanation

Warm air is less dense than cold air, which causes it to rise. This difference in density leads to the formation of convection currents, making 'less' the correct choice.

Front

Johnny accidentally grabbed the handle of the hot pot.

Back

conduction

Answer explanation

Johnny experienced conduction when he grabbed the handle of the hot pot. Conduction is the transfer of heat through direct contact, which is why the hot handle felt hot to him.

Front

A group of friends gather around a fire to stay warm. What is this an example of? Options: conduction, convection, radiation

Back

radiation

Answer explanation

The friends are warmed by the heat radiating from the fire. This process is called radiation, where heat travels through space without needing a medium, unlike conduction or convection.

Front

Transfer of thermal energy through "space" from the Sun that heats up the Earth.

Back

radiation

Answer explanation

The transfer of thermal energy from the Sun to the Earth occurs through radiation, which is the emission of energy in the form of electromagnetic waves. Conduction and convection require a medium, which space lacks.

Front

The way the heat is moving from the hot coffee is called...

Back

convection

Answer explanation

The heat from hot coffee moves primarily through convection, which is the transfer of heat by the movement of fluids (liquids or gases). In this case, the warm air rises and cooler air moves in, creating a convection current.