Conduction and convection

How do molecules react when thermal energy is added to them?

• They feel warmer but stay in place

• They feel warmer and move slower.

• They feel warmer and move faster

• Molecules do not react with thermal energy only solar energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Which of the following is an example of thermal energy transfer by conduction?

• Put your fingers on a hot iron and you feel hot.

• Thermal energy from a heater warming up your whole house.

• Standing by a campfire and you feel hot.

How does thermal energy move?

• From cooler objects to warmer objects.

• From warmer objects to cooler objects

• From metal objects to nonmetal objects

• Very quickly in all directions

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NGSS.MS-PS3-5

Which of the following is NOT a thermal conductor?

• Iron

• Copper

• Steel

• Glass

Which of the following is an example of convection?

• A hair dryer is drying up your hair.

• Boiling spaghetti noodles in water.

• When a car engine turns hot after being turned on.

Tags

NGSS.MS-PS3-3

When a frying pan is touching a stove, what energy transfer method is happening?

• Conduction

• Convection

• Radiation

Energy transfers from a region of _________temperature to a region of _________ temperature.

• low to high

• high to low

• high to high

• low to low

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Warm air is __________ dense than cold air and rises creating convection currents.

• more

• less

Tags

NGSS.MS-ESS2-5

True or False: Water and air are good thermal conductor .

• True

• False

What causes hot and cold water to become the same temperature once they are combined?

• The thermal energy moves from cooler temperature to warmer temperature.

• The thermal energy of the hot water runs out.

• Thermal energy from the hot water is transferred to the cold water.

• Thermal energy causes the water to boil.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4