Amplify Thermal Energy Critical Juncture Practice

Front

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

Back

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

Answer explanation

When a 65 degree sample (red) contacts a 35 degree sample (black), energy transfers from the black to the red until they reach thermal equilibrium, making the red hotter with energy from the black until they are equal.

Tags

NGSS.MS-PS1-4

Front

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

Back

Molecules stop transferring energy when colliding systems reach equilibrium

Answer explanation

Molecules stop transferring energy when colliding systems reach equilibrium, meaning they have equal energy distribution and no net energy transfer occurs between them.

Tags

NGSS.MS-PS3-5

Front

How do air conditioners cool the air?

Back

Air conditioners cool air by air slowing molecules down.

Answer explanation

Air conditioners cool air by slowing down air molecules. This process reduces the energy of the molecules, leading to a decrease in temperature, which is how cooling is achieved.

Tags

NGSS.MS-PS1-4

Front

What happens in energy terms when a frozen Bubba-Burger is placed on a hot grill?

Back

The grill molecules are transferring energy to the Bubba-Burger

Answer explanation

The grill molecules are transferring energy to the Bubba-Burger, causing it to heat up and cook. This is a process of heat transfer from the hotter grill to the colder burger.

Tags

NGSS.MS-PS1-4

Front

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

Back

The energy in the molecules of the pizza decreased

Answer explanation

The pizza became cold because the energy in its molecules decreased as it was exposed to the cooler air outside the bag. This loss of energy results in a lower temperature, making the pizza cold.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

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

Back

50

Answer explanation

To find the equilibrium temperature, use the average of the two temperatures: (65 + 35) / 2 = 50. Thus, the systems will be at equilibrium at 50 degrees.

Tags

NGSS.MS-PS1-4

Front

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?

Back

The 90 degree cup because it transferred energy to the colder air

Answer explanation

The 90 degree cup will likely be warmest after 10 minutes because it is transferring energy to the colder air, losing heat more rapidly than the 40 degree cup, which is closer in temperature to the surrounding air.

Tags

NGSS.MS-PS1-4

Front

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

Back

slower

Answer explanation

When an object gets colder, its molecules lose energy and move slower. This decrease in kinetic energy results in reduced molecular motion, making 'slower' the correct choice.

Tags

NGSS.MS-PS1-4

Front

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

Back

from fast-moving molecules to slower-moving molecules.

Answer explanation

When two things are in contact, kinetic energy transfers from fast-moving molecules to slower-moving molecules, allowing energy to equalize between them.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Front

Objects will transfer energy until they reach equilibrium and have molecules that...

Back

move at about the same speed

Answer explanation

Objects transfer energy until they reach equilibrium, which occurs when their molecules move at about the same speed. This ensures a balanced state, unlike the other options which imply uniformity in speed that is not achievable.

Tags

NGSS.MS-PS3-1