Unit 3 Review (6th)

What happens to the kinetic energy of the bowling ball when the ball hits the pins?

• The bowling ball's kinetic energy is transferred to the pins. The bowling ball's kinetic energy is destroyed.

• The bowling ball's kinetic energy creates potential energy in the pins.

• The bowling ball's kinetic energy is transferred to the pins.

• The bowling ball's kinetic energy stays the same after it hits the pins.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Think about collisions and what you know about different forms of energy. What other form of energy might result from collisions in a Newton’s cradle?

• chemical energy

• electrical energy

• electromagnetic energy

• sound energy

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A roller coaster car requires an input of energy from an electric motor to reach the top of the first hill. Which statement describes the transformation of energy involved in this process?

• Mechanical energy is transformed into electrical energy.

• Electrical energy is transformed into chemical energy.

• Electrical energy is transformed into mechanical energy.

• No energy transformation occurs.

Tags

NGSS.MS-PS3-5

When a meteoroid strikes Earth, mechanical energy is transformed into which of these forms of energy? Select all that apply.

• sound energy

• electrical energy

• thermal energy

• chemical energy

Tags

NGSS.MS-PS3-5

Select the statement that best describes the transfer of energy between the pendulums in a Newton’s cradle.

• As the first pendulum swings downward, its kinetic energy decreases and its potential energy increases. Kinetic energy is transferred from the moving pendulum to the stationary pendulums.

• As the first pendulum swings downward, its kinetic energy decreases and its potential energy increases. Kinetic energy is transferred from the stationary pendulums to the moving pendulum.

• As the first pendulum swings downward, its potential energy decreases and its kinetic energy increases. Kinetic energy is transferred from the stationary pendulums to the moving pendulum.

• As the first pendulum swings downward, its potential energy decreases and its kinetic energy increases. Kinetic energy is transferred from the moving pendulum to the stationary pendulums.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

Select the statement that best explains how evidence of energy transformation supports the law of conservation of energy.

• The output of energy in different forms supports the law of conservation of energy because energy is lost from the system.

• The output of energy in different forms supports the law of conservation of energy because energy is added to the system.

• The output of energy in different forms supports the law of conservation of energy because energy is changed, but not destroyed.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

• temperature

• heat

• thermal energy

• bonding energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A lizard sits on a hot rock to get warm. What type of thermal energy transfer is occurring?

• convection

• radiation

• conduction

• kinetic

What is thermal energy?

• the total kinetic energy in an object

• the average kinetic energy in an object

• the total transfer of kinetic energy between two objects

• the average transfer of kinetic energy between two objects

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

A hot potato at 80 ºC is placed in a bowl of soup at 40 ºC. The surrounding room is at20 ºC. Which correctly describes the directions of thermal energy transfer?

• 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