heat transfer

When you are burning logs at a campfire you see light and feel heat. Which of these statements are true about the amount of energy transformed in the camp fire? Choose two.

• The Law of Conservation of Energy applies to these transformations.

• The chemical energy in the logs is lost during the transformation.

• The fire is hotter than the logs were, so energy is gained in this transformation.

• The amount of heat and light energy released equals the amount of chemical energy that is burned.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Trent forgets his steaming hot cup of coffee on the counter. When he returns, the coffee is 72 $\degree$  . What has happened?

• The molecules in the air around the cup sped up.

• The molecules in the coffee slowed down.

• The molecules in the coffee sped up. 

• The molecules in the air around the cup slowed down.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Mildred takes a pound of frozen hamburger meat out of the freezer and puts it into the refrigerator.

• from the hamburger to the air outside the refrigerator

• from the air in the refrigerator to the hamburger

• from the air in the freezer to the air in the refrigerator

• from the hamburger to the air in the refrigerator

Tags

NGSS.MS-PS1-4

The energy transferred between objects that are at different temperatures.

• Radiation
• Convection
• Thermal Conduction
• Heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is an example of heat transfer through conduction?

• the Sun drying clothes hanging outside

• a pan on the stove getting hot

• hot air rising inside a house

• a microwave warming a cup of water

A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to

• Convection

• Conduction

• Radiation

• Globulation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Boiling Water

• Conduction

• Convection

• Radiation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As you hold a piece of ice, it begins to melt from the warmth of you hand on it. This is because of

• Convection

• Conduction

• Radiation

• the fact that you are the Human Torch from the Fantastic Four.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Heat transfers from an area of ____temperature to an area of ___ temperature.

• high to low
• low to high
• high to high
• It can travel high to low and low to high. 

Conduction is how heat passes through objects by...

• Fluids

• Direct Contact

• Empty Space