Energy Transfer and Kinetic Energy Concepts

What do the arrows in the drawing most likely represent?

• phase changes

• convection currents

• electromagnetic radiation

• energy transfer by conduction

Tags

NGSS.MS-PS3-3

Identify the types of heat transfer shown.

a

b

c

Conduction

Convection

Radiation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Two children are waiting for their cookies to finish baking in the oven. As the children stand 1 meter away from the closed oven, they can feel warmth. 

How does heat transfer from the oven to the children?

• radiation

• conduction

• convection

• insulation

Tags

NGSS.MS-PS3-5

Heat is transferred from metal grill to the food through ​ (a)    causing the hot grill atoms to collide with the cooler food (b)   . As the food cooks, steam is produced, creating a ​ (c)   current in the air above the grill. The hot air rises, while cooler air moves in to replace it, ensuring that the food is evenly cooked as the heat circulates around it.

• conduction
• convection
• more
• less
• radiation 

What is the relationship between Temperature and Kinetic Energy?

• Temperature increase when Kinetic Energy decrease

• Temperature decrease when Kinetic Energy decrease

• Temperature stays the same when Kinetic Energy increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Reorder the temperatures from least kinetic energy to most kinetic energy

• 75

  Degree Celsius

• 25

  Degree Celsius

• 100

  Degree Celsius

• 55

  Degree Celsius

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The movement of thermal energy from a region of _________________ temperature to a region of _____________________ temperature is called heat.

• higher, lower
• cooler, warmer
• lower, higher
• medium, medium

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Determine which heat transfers below are due to the process of conduction.

• I) You walk barefoot on the hot street and it burns your toes.

• Il) When you get into a car with hot black leather in the middle of the summer and your skin starts to get burned.

• III) A flame heats the air inside a hot air balloon and the balloon rises.

• IV) A boy sits to the side of a campfire. He is 10 feet away, but still feels warm.

Which statement BEST explains what MOST LIKELY occurred?

• The water in container 1 rose to 70 C while the water in container 2 decreased to 30 C. Heat was transfered from container 2 to container 1 by radiation and convection.

• The water in container 1 rose to 60 C while the water in container 2 decreased to 60 C. Heat was transfered from container 2 to container 1 by conduction and convection

• The water in container 1 rose to 40 C while the water in container 2 increased to 100 C. Heat was transfered from container 2 to container 1 by conduction and radiation.

• The water in container 1 rose to 90 C while the water in container 2 decreased to 60 C. Heat was transfered from container 2 to container 1 by conduction and convection.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statements explain how thermal energy moves in the hot chocolate? CHOOSE ALL THAT APPLY.

• Heat is transferred to the soup by conduction as the pot becomes hot.

• Molecules move in a cycle known as radiation as cooler denser molecules rise to the top and hotter less dense molecules sink to the bottom.

• Molecules in the middle of the pot, are farthest from the stove, and heated by radiation.

• Convection causes less dense, warmer soup molecules to rise and cooler, denser molecules to sink in a cycle.

• Heat is transferred within the soup by conduction as molecules collide with one another.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4