Warm ups for week of 11-30-15

Monday: 11-30-15

EQ: Why doesn’t gas have a definite volume?

WU: According to Boyle’s Law what does it state about the relationship between gases and pressure?

1: It states that when the pressure of a gas at a constant temperature is increased, the volume of the gas decreases.

2: When the pressure is decreased, then the volume increases.

Example: A bicycle pump to air up tires.

Tuesday: 12-1-15

WU: How does a hot air balloon rise?

A: 1: Heat increases the volume of the air.

2: Air particles escape from the bottom opening.

3: The few air particles that remain inside the balloon are less dense than the outside air so the balloon rises.

Wednesday: 12-2-15

WU: What is vaporization and what are the 2 types of vaporization?

A: 1: Vaporization takes places when particles in a liquid gain enough energy to form a gas.

2: The two main types of vaporization are evaporation and boiling.

Thursday: 12-3-15

WU: How is air pressure and boiling point related?

A: 1: The boiling point of a substance depends on the pressure of the air above it.

2: The lower the air pressure the less energy is needed for the particles of the liquid to escape into the air.

Friday: 12-4-15

WU: What causes a helium balloon to burst as it rises in the atmosphere?

A: As a helium balloon rises, the outside pressure decreases which causes the helium inside the balloon to expand, which eventually stretches the balloon so much it will burst.