Pressure in gases KS3

Which key term is defined as 'air molecules' colliding with the outer surface and pushing in?

• a) Surface Pressure
• b) Air Pressure
• c) Gas Pressure
• d) Force Pressure

Which key term is defined as 'gas molecules' colliding with the inner surface and pushing out?

• a) Surface Pressure
• b) Air Pressure
• c) Gas Pressure
• d) Force Pressure

What TWO factors will increase the pressure produced?

• A - Higher temperature

• B - Lower Temperature

• C - Higher volume

• D - Lower volume

In what direction(s) does air exert pressure?

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

As you climb up a mountain what happens to the air pressure?

• decreases
• increases
• stays the same

What happens to the amount of oxygen molecules as altitude increases?

• fewer molecules
• more molecules
• same amount of molecules
• nothing happens to the molecules

Cold air exerts _____________ pressure than warm air.

• the same
• more
• less

Air pressure does not crush objects on earth

• because more air pushes down than up
• because gravity keeps air pressure away
• because air pressure pushes in all directions
• because the Earth has an opposing force of gravity

This is an example of the everyday application of pressure in:

• Solids

• Liquids

• Gases

• Plasma

We can increase the pressure of a gas by:

• Adding more gas.

• Reduce the volume of the container.

• Increase the temperature of the gas.

• None of the above answers.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4