Investigation 5 Energy Transfer

A cold block of metal is placed in contact with a warm block of metal. Which type of energy will be transferred between the blocks?

Choose the correct answer.

• thermal

• electrical

• mechanical

• chemical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Four objects all made of iron. Which has the most total thermal energy?

Choose the correct answer.

• a nail at 100 ºC

• a spoon at 25 ºC

• a frying pan at 50 °C

• a paper clip at 150 ºC

Tags

NGSS.MS-PS3-4

A hot potato at 80 ºC is placed in a bowl of soup at 40 ºC. The surrounding room is at 20 ºC. Which correctly describes the directions of thermal energy transfer?

Choose the correct answer.

• potato to soup, and soup to room

• room to soup, and soup to potato

• room to soup, and room to potato

• soup to potato, and potato to room

Tags

NGSS.MS-PS3-4

Which of these is a measure of the average kinetic energy of the molecules of a material?

Choose the correct answer.

• heat

• temperature

• thermal energy

• bonding energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Chefs need pans that can go from the stovetop to the oven. Some materials that are used for the handles of pans can be damaged by the high temperatures in ovens. Which statement best defines the design problem?

Choose the correct answer.

• The problem is to design ovens that won’t reach high temperatures.

• The problem is to design stovetops that won’t reach high temperatures

• The problem is to design plastic handles that won’t be damaged by high temperatures.

• The problem is to design pans that have handles that won’t be damaged by high temperatures.

Tags

NGSS.MS-ETS1-1

Which step is not required when solving a design problem?

• testing solutions

• brainstorming solutions

• evaluating and critiquing solutions

• alphabetizing or numbering solutions

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

To create a device that maximizes thermal energy transfer, what property should the material used include?

Choose the correct answer.

• low density

• high density

• thermal insulator

• thermal conductor

Tags

NGSS.MS-PS3-3

An engineer wants to design a jacket that a police officer can wear outside in cold and snowy weather. Which set of criteria and constraints is most likely to lead to a successful solution?

• minimizes thermal energy transfer and made of a lightweight material

• maximizes thermal energy transfer and made of a lightweight material

• minimizes thermal energy transfer and made of a material that is not flammable

• maximizes thermal energy transfer and made of a material that is not flammable

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS3-3

Which of these energy transfers occurs in a solar panel?

• Mechanical energy is transferred to the panel when waves from the sun push against the panel and move it.

• Electromagnetic energy is transferred to the panel when light waves from the sun are absorbed by the panel.

• Thermal energy is transferred to the panel when it is connected with an electrical source in a complete circuit

• Electrical energy is transferred to the panel when it is connected with an electrical source in a complete circuit.

Tags

NGSS.MS-PS4-2

Students are designing insulated, uncovered cups intended to keep cold drinks cold. They put 200 mL of water at 0 ºC into cups of different designs and recorded changes in temperature over time. Their goal is to design a cup that will keep the water cold for as long as possible. Which type of heat transfer will be the greatest obstacle to reaching their goal?

• from the water through the top of the cup to the room

• from the room through the top of the cup to the water

• from the water through the sides of the cup to the room

• from the room through the sides of the cup to the water

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4