Energy Transfer and Transformations

Mrs. Z. holds a cup of lemonade in her hand. She adds an ice cube to the cup. Which substance increased in temperature?

• Mrs. Z's hand

• the ice cube

• the lemonade

• the air around the cup

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Mrs. Kerry is drinking hot coffee. Which describes the direction of heat flow?

• from the coffee to the cup

• from the cup to the coffee

• from her hand to the coffee cup

• from the coffee to the microwave

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of these is an example of heat transfer by conduction?

• a pancake heating up in a pan

• warm air rising and cold air sinking

• a solar panel collecting light energy

• a fireplace radiating heat through a house

A waiter places an ice cube in a cup of coffee. Which of these describes how the heat travels?

• from the coffee to the ice until it boils

• from the ice cube to the coffee until it freezes

• from the ice cube to the coffee until they both evaporate

• from the coffee to the ice cube until they become the same temperature

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A baker is getting a sheet of biscuits out of the oven. He places an oven mitt on his hand. What does wearing the oven mitt do?

• transfers the heat energy

• keeps his hand insulated

• conducts heat energy to his hand

• decreases the amount of energy in the pan

Tags

NGSS.MS-PS3-3

A cook heats water up to 32° C (90° F) in Pot 4. The cook then fills Pots 1, 2, and 3 to the top and puts the lids on.

Which explains which pot has more energy?

• They all have the same amount because the water is the same temperature

• Pot 1 has more because it is small and the molecules are close together

• Pot 4 because the energy stayed in the pot that the cook heated the water in

• Pot 3 because it is the largest pot and contains more water than the other pots

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

It is 30° C (85° F) outside. Mrs. Howard is at the beach with his family. Which explains why Mrs. Howard's feet burn when he walks on the sand but not when they he puts them in the water?

• Materials all heat up at the same rate

• Different materials conduct heat at different rates

• The sand and water are different colors

• Molecules from sand touch her feet but not molecules from water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Mr. K puts his pizzas in a special container to keep them hot while he drives to his friend's place. Which of these properties does the container most likely have?

• It is not a good insulator

• It is a good energy conductor

• It keeps heat energy out of the container

• It keeps energy from leaving the container

Tags

NGSS.MS-PS3-3

An electrician is installing a light switch. She is using wire to conduct the electrical energy to the lamp. Which material would be best for the wire?

• metal

• paper

• rubber

• wood

A student wants to keep his lunch cold until lunchtime. He analyzes a graph of different materials.

Which type of lunch container would keep his lunch cold the longest

• metal

• Styrofoam

• plastic

• paper

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-PS3-3