Weather Review - Molecules

Front

What happens to air molecules when they are cooled?

Back

They become more dense and move closer together.

Front

How do molecules in a warmer material compare to those in a cooler material?

Back

Molecules in a warmer material move faster than molecules in cooler material.

Front

What occurs to air molecules when the air is warmed up?

Back

The molecules speed up and spread out.

Front

How does the kinetic energy of molecules in warmer materials compare to those in cooler materials?

Back

Molecules in warmer materials have more kinetic energy than those in cooler materials.

Front

Does heat transfer from the ground to the air above by radiation?

Back

False, heat transfers by conduction and convection.

Front

What is density in relation to air molecules?

Back

Density is the mass of air molecules in a given volume; cooler air is denser than warmer air.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion; warmer molecules have higher kinetic energy.

Front

What is the effect of temperature on the movement of air molecules?

Back

Higher temperatures cause air molecules to move faster and spread apart.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids and gases).

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.