What happens to cool molecules in the process of convection?

• They rise to the top

• They sink to the bottom

• They evaporate

• They expand

Tags

NGSS.MS-PS1-4

What happens to warm air in a convection current?

• It sinks

• It rises

• It stays still

• It cools down

Tags

NGSS.MS-ESS2-5

What is the role of heat in convection?

• It cools the molecules

• It causes molecules to move

• It stops molecular movement

• It freezes the molecules

Tags

NGSS.MS-PS3-4

What happens to the temperature of molecules as they rise in convection?

• It decreases

• It increases

• It remains constant

• It fluctuates

Tags

NGSS.MS-PS1-4

Which of the following is a common use of solar radiation in homes?

• Heating water

• Cooling air

• Producing coal

• Generating wind

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What is the impact of solar radiation on electricity bills?

• Increases bills

• Decreases bills

• Has no effect

• Doubles bills

Which gas is involved in the burning of wood as shown in the diagram?

• Nitrogen

• Oxygen

• Hydrogen

• Helium

What is the role of oxygen in the burning of wood?

• It cools the fire

• It fuels the fire

• It extinguishes the fire

• It turns into water

What type of energy transformation occurs when a tree grows using sunlight?

• Chemical to motion

• Radiant to chemical

• Electrical to thermal

• Chemical to thermal

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the primary energy transformation in a car engine?

• Electrical to thermal

• Chemical to motion

• Radiant to chemical

• Chemical to thermal

Tags

NGSS.HS-PS3-3