Heat Movement

As Keerthi holds a pan over a fire, the water begins to boil as shown in the figure below. The metal handle of the pan becomes very hot, causing an uncomfortable sensation in her hand. What process, indicated by the letter Y, was responsible for transferring energy to Keerthi's hand?

• radiation

• insulation

• conduction

• convection

Based on the principles of convection, conduction and thermal radiation, which scenario below is most similar to the following situation? Heating a tin can of water using a Bunsen burner.

• Feeling a metal wire get warmer as you roast a marshmallow over a fire. 

• Warm air rising in a room where the air is moving. 

• The sun warming up the roof on a house. 

• Cold water sinking in a pot of water being warmed up on the stove. 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the main method of heat transfer from the core to the crust of Earth?

• conduction

• convection

• insulation

• radiation

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Jude warms a pure, solid substance. He graphs the changes in temperature over time as shown in the figure below. What is happening as he warms the substance?

• the molecules are moving more slowly

• the molecules are moving more rapidly

• the speed of the molecules is not changing

• the molecules speed up and then decrease their speed

Tags

NGSS.MS-PS1-4

How do the particles in the water change from the morning to the afternoon?

• they move slower

• they have less energy

• they get farther apart

• they move closer together

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What causes melting?

• heat causes the molecules in the ice cube to expand and forces them apart

• heat removes the thermal energy from the ice cube and causes it to become liquid water

• the additional energy causes the bonds between hydrogen and oxygen in the ice cube to break

• the transfer of thermal energy to the cube causes its molecules to move faster

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Anthony twists his ankle playing soccer. The doctor advises him to rest and apply ice packs to the ankle to help with swelling and pain. However, the ice pack only stays very cold for a short while, as seen in the table. Anthony quickly gets another ice pack while his ankle is still cold from the first ice pack. Which statement best predicts what the student will observe with the second ice pack?

• the second ice pack will stay cold longer than the first

• the second ice pack will become warmer more quickly than the first

• the second ice pack will change temperature similarly to the first

• the ice in the second ice pack will not melt

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Conduction occurs more easily between solids. This is because the particles in liquids and gases are:  

• farther apart and move faster 

• ccloser together and move faster 

• further apart and move more slowly 

• closer together and move more slowly 

Tags

NGSS.MS-PS3-4

Which observation would be evidence that heat was transferred by radiation?

• A person feels colder when the wind is blowing. 

• A pan on a stove heats up the food placed in it. 

• Warm air in the kitchen rises to the second floor of the house. 

• A car with the windows rolled up gets very hot on a summer day. 

If you go outside on a hot summer day with a double scoop ice cream cone, how will the cold ice cream interact with the hot outside air? 

• Heat from the ice cream will move to the air.

• Cold from the ice cream will move to the air.

• Cold from the air will move to the ice cream.

• Heat from the air will move to the ice cream. 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5