Density and Heat Transfer

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

Why do helium balloons rise in the air?

Back

Helium balloons rise because helium is less dense than the air around it.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature.

Front

What is conduction?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as sunlight.

Front

What happens to an object with a higher density than water when placed in water?

Back

An object with a higher density than water will sink.

Front

What happens to an object with a lower density than water when placed in water?

Back

An object with a lower density than water will float.

Front

If two objects have the same volume but different masses, which one is more dense?

Back

The object with more mass is more dense.

Front

What is the relationship between mass and volume in determining density?

Back

Density is calculated by dividing mass by volume (Density = Mass/Volume).

Front

What is an example of convection in everyday life?

Back

An example of convection is the way warm air rises and cool air sinks in a room.