Investigation 3 I-Check: Weather and Water

Front

What happens to the temperature of a room when cold outside air is introduced?

Back

The temperature of the room decreases because the air particles in the room transfer kinetic energy to the colder air particles from outside.

Front

Why do hot air balloons rise?

Back

Hot air balloons rise because hot air is less dense than cold air, causing the balloon to float.

Front

What is the relationship between temperature and density in most substances?

Back

As temperature increases, density decreases.

Front

How can you layer different solutions in a straw without them mixing?

Back

You can layer solutions by starting with the densest solution on the bottom and adding less dense solutions on top.

Front

What type of air rises due to its density?

Back

Warm air rises because it is less dense.

Front

Define kinetic energy in the context of air particles.

Back

Kinetic energy is the energy that air particles possess due to their motion; faster-moving particles have higher kinetic energy.

Front

What is density?

Back

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

Front

Explain why cold air is denser than warm air.

Back

Cold air is denser than warm air because the particles are closer together, resulting in a higher mass per unit volume.

Front

What happens to the density of a substance when it is heated?

Back

When a substance is heated, its density typically decreases because the particles move apart.

Front

What is the principle behind the layering of liquids?

Back

The principle is based on density; denser liquids will sink below less dense liquids.