Gas Pressure

the result of billions of rapidly moving particles in a gas simultaneously colliding with an object.

• Gas volume

• Gas pressure

• Gas temperature

• none of them

An empty space with no particles and no pressure is called

• open system

• closed system

• vacuum

• atmospheric pressure

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

• The pressure will increase

• The pressure will decrease

• The pressure will remain constant

• The pressure will equalize

In what direction(s) does air exert pressure?

• everywhere
• no where
• there is no pressure
• downward

A _____________ is the scientific  instrument used to measure air pressure.

• barometer
• thermometer
• mercury
• watch

Atmospheric pressure -------------- as you climb a mountain.

• increases

• decreases

• constant

• raised

Fewer air particles means ----------- collisions resulting in lower air pressure

• higher

• more

• fewer

• increase