DC -- kinetic energy of gases

What force is experienced by this hot air balloon to push it upward?

• friction force

• air pressure force

• buoyant force

• lifting force

Tags

NGSS.HS-PS2-1

Gases are easily _____.

• heated

• compressed

• evaporated

• liquefied

What does a large coefficient of volume expansion mean?

• gases expand and contract very rapidly with temperature changes.

• gases require less volume than solids or liquids at the same temperature

• gases maintain their temperature easily when volume increases

• gases have a higher density than liquids at the same temperature

What does the letter k represent?

• the coefficient of volume expansion

• the Ideal Gas constant

• the Boltzmann constant

• the Kinetic Energy of a Gas constant

What units must be used for temperature when using gas law equations?

• Celsius

• Fahrenheit

• Kelvin

• Rankine

What does N represent?

• force measured in Newtons

• the Boltzmann constant

• number of molecules of gas

• pressure of the gas

A mole of any gas has a variable volume because molecules of different elements have different sizes.

• True

• False

The kinetic theory of gases assumes ___

• gas molecules are all the same size

• gas molecules are always in motion

• gas molecules are always changing temperature

• gas molecules are always attracted to each other

The average translational kinetic energy of a molecule, KE¯, is called

• volume expansion

• potential energy

• buoyant force

• thermal energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

What is happening in this diagram?

• a sound wave is moving through gas molecules

• thermal energy is being transferred

• kinetic energy is transferred

• a buoyant force is acting on gas molecules

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4