Heat Transfer

Front

What happens to the movement of molecules in an object when heat is added?

Back

The molecules move faster.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

Which has a greater amount of thermal energy: two objects at the same temperature but different masses?

Back

The object with the greater mass has the greatest amount of thermal energy.

Front

What material is best for making a cooler to keep food cold and insulated?

Back

Plastic is the best material for insulation.

Tags

NGSS.MS-PS3-3

Front

What is the process of heat transfer in fluids (gases or liquids) through up and down movements?

Back

Convection.

Front

Why does a hot air balloon float?

Back

The heated air expands, making the air inside the balloon less dense than the surrounding air, causing it to rise.

Tags

NGSS.MS-PS1-4

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Front

What is the difference between conduction, convection, and radiation?

Back

Conduction is heat transfer through direct contact, convection is heat transfer through fluid movement, and radiation is heat transfer through electromagnetic waves.

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a substance due to an increase in temperature.

Tags

NGSS.MS-PS1-4

Front

How does temperature relate to the kinetic energy of molecules?

Back

Temperature is a measure of the average kinetic energy of the molecules in a substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is the role of insulators in heat transfer?

Back

Insulators reduce the rate of heat transfer between objects.

Tags

NGSS.MS-PS3-3