Amplify Thermal Energy C2 Quiz

Why do molecules change speed?

• Molecules change speed when they are at equilibrium

• Molecules speed up when they get energy from other molecules

• Sample A is hotter then sample B

• Molecules slow down when they give energy to other molecules

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A 65 degree sample makes contact with a 35 degree sample, how will the systems react?

• The red will get hotter along with the black

• The red will get hotter with energy from the black until they are equal

• The black will get colder with energy from red until they equal

• The black will share energy with the red forever

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Why does the transfer of energy between two colliding things stop?

• Molecules stop transferring energy when colliding systems reach equilibrium

• When the two non-colliding things get equally hot molecules make energy

• Molecules make more kinetic energy until it is balanced

• The molecules of a system destroy energy when the system is balanced

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How do air conditioners cool the air?

• Air conditioners cool air by air slowing molecules down.

• Air conditioners cool air by speeding air molecules up.

• Reaching Equilibrium at the same time

• Creating hot air instead of cold air

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Imagine that your Mom just put a frozen Bubba-Burger on the hot grill to sizzle? In energy terms what is happening?

• The Bubba-Burger molecules are transferring energy to the grill

• The Bubba-Burger is at equilibrium with the grill

• The grill molecules are transferring energy to the Bubba-Burger

• The grill is creating energy with the Bubba-Burger

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Your family orders a pizza from Dominoes during CoVid19, the driver left the bag open. The pizza is cold. What happened?

• The energy in the molecules of the pizza decreased

• The pizza lost heat molecules

• The cold energy in the molecules of the pizza increased

• The energy in the molecules of the pizza increased

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A 65 degree sample makes contact with a 35 degree sample, at what temperature will the systems be at equilibrium?

• 45

• 30

• 50

• 55

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If a 40 and a 90 degree cup of coffee sit out on a 30 degree day, which cup will likely be warmest after 10 minutes?

• The 90 degree cup becasue it transferred energy to the colder air

• The 90 degree cup because it got energy from the colder air

• The 40 degree cup because it got energy from the colder air

• The 40 degree cup because it transferred energy to the colder air

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When an object gets colder, its molecules move...

• slower

• faster

• the same

• it changes

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When two things are in contact, kinetic energy transfers...

• from slow-moving molecules to faster-moving molecules.

• from fast-moving molecules to slower-moving molecules.

• between the two things.

• nowhere and disappears

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