Energy Transfer

Energy moves from

• Hot to cold

• Cold to hot

• High to low

• up and down

• low to high

Answer explanation

Energy always moves from high energy (hot) to low energy (cold). Energy Transfer Big Ideas

Energy of motion is which type of energy?

• Potential
• Kinetic
• Sound
• Gravitational

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The water and the air in the bottle are at the same temperatures. Which particles have higher kinetic energy?

• The air particles

• The water Particles

• The solid particles in the plastic bottle

• They all have the same kinetic energy.

Answer explanation

They all have the same energy because they are at the same temperature (equilibrium).

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The water and the air in the bottle are at the same temperatures. Describe the energy transfer.

• Energy is transferring from the water to the air.

• Energy is transferring from the air to the water.

• Energy is transferring back and forth between the water and the air.

• No energy is transfering.

Answer explanation

They all have the same energy because they are at the same temperature (equilibrium).

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

The water and the air in the bottle are at the same temperature. Describe the particle movement.

• The particles in the plastic vibrate so they have more energy.

• Liquid particles move over and around each other so they have more energy.

• Air particles fly free so they have more energy.

• All have the same energy because they are the same temperature.

Answer explanation

Particles move at the same speed and have the same amount of energy if they are at the same temperature.

Tags

NGSS.MS-PS1-4

A student heated 25mL of water from 5 degrees to 35 degrees. What was the temperature change?

• 30 degrees

• 40 degrees

• 750 calories

• 1000 calories

Answer explanation

Subtract the final temperature from the starting temperature.

Tags

NGSS.MS-PS1-4

A student heated 25mL of water from 5 degrees to 35 degrees. How much energy was used to heat the water?

• 30 degrees

• 40 degrees

• 750 calories

• 1000 calories

Answer explanation

Multiple how much (25mL) by the temperature change (30 degrees)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A student mixed 25mL of 50-degree water and 25mL of 10-degree water. What was the final temperature?

• 60 degrees

• 50 degrees

• 40 degrees

• 30 degrees

Answer explanation

Find the average. Add the temperatures (50 degrees + 10 degrees = 60 degrees) then divide by 2 (60/2 = 30).

Tags

NGSS.MS-PS1-4

What does a thermometer measure?

• The average kinetic energy of the particles being sampled.

• It measures the degree of heat in Celsius or Fahrenheit.

• It measures the temperature change.

• It measures how much energy is being transferred.

Answer explanation

A thermometer measures the average kinetic energy through particle movement.

A student puts warm bottles of soda in a cooler with ice. What happens to the particles of soda?

• The energy from the soda transfers to the ice and the particles slow down.

• The energy from the ice transfers to the soda and the particles slow down.

• The space between the soda particles gets smaller as they slow down.

• The soda particles get smaller as they slow down.

Answer explanation

Energy Transfer Big Ideas: Energy transfers from high/hot to low/cold. Always. The soda has higher energy than the ice because it is warm. The soda transfers energy to the ice and gets cold as the particles slow down and the space between particles gets smaller.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5