Energy Transformation Test Review

The heating curve for iron is shown to the right. At what temperature is the melting point?

• 2750ºC

• 1500ºF

• 2750ºF

• 1500ºC

Tags

NGSS.MS-PS1-4

Chef Tom works in a very busy restaurant. He cooks for 100's of people each night. Why Chef Tom would use a copper pot instead of an aluminum pot?

• The aluminum pot probably holds less food than the copper pot.

• The copper pot heats up faster because it is a better conductor.

• The copper pot heats up slower because it is a better conductor.

• The aluminum pot heats up slower because it is a poor insulator.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Based on the image to the right, #3 represents what stage of matter and what type of change?

• A solid undergoing a temperature change.

• A liquid undergoing a phase change.

• A liquid undergoing a temperature change.

• A solid undergoing a phase change.

Tags

NGSS.MS-PS1-4

Heat would best be transferred by conduction between

• a candle and the air.

• an oven and a glass dish.

• a stove and a copper pot.

• water and a wooden spoon.

Tags

NGSS.MS-PS3-4

Which energy transformations BEST illustrates why people can walk?

• Chemical energy is being converted into light energy.

• Chemical energy is being converted into thermal energy.

• Chemical energy is being converted into mechanical energy.

• Chemical energy is being converted into more chemical energy.

Tags

NGSS.MS-PS3-5

If 200 grams of water is to be heated from 20.0°C to 100°C to make a cup of tea, how much heat must be added? The specific heat of water is 4.18 J/g° C.

What is the ΔT of the above scenario?

• 20ºC

• 80ºC

• 100ºC

• 120ºC

Tags

NGSS.MS-PS3-4

If 200 grams of water is to be heated from 20.0°C to 100°C to make a cup of tea, how much heat must be added? The specific heat of water is 4.18 J/g° C.

What would be the best equation to use to solve this problem?

• q = m x C x ΔT

• C = q / (m x ΔT)

• m = q / (C x ΔT)

• Tf = Ti + ΔT

Tags

NGSS.HS-PS3-1

The Gulf Stream is a current that brings warm ocean water from the south to the north. What type of heat transfer is this?

• Conduction

• Convection

• Radiation

• Insulation

Tags

NGSS.MS-ESS2-6

One of these items transforms electrical energy into sound. It is

• a. a firecracker.

• b. an acoustic guitar.

• c. an alarm clock.

• d. a drum.

Gravitational potential energy depends on the _______ and _______ of the object.

• Mass and movement

• Height and mass

• Friction and sound

• Movement and sound

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2