Potential/Kinetic Energy Assessment Review

Based on the information in the graph, we can predict that the kinetic energy of the 10 kg object at 2 m/s would be:

• 12 Joules.

• 20 Joules.

• 38 Joules.

• 44 Joules.

Tags

NGSS.MS-PS3-1

A student creates a ramp by stacking four blocks and then leaning a meter stick against it. She releases four different balls from the same position on the ramp and calculates their speeds. Based on the information in the table, which ball would you predict to have the least kinetic energy when it reaches the end of the ramp?

• Golf ball

• Tennis Ball

• Baseball

• Softball

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NGSS.MS-PS2-2

NGSS.MS-PS3-1

If Magnet 1 is moved closer to Magnet 2, Magnet 2 will move. This is because:

• objects need to touch each other in order to cause movement.

• magnets can only exert a force on other magnets.

• forces can affect objects over a distance.

• moving Magnet 1 changed the force needed to move Magnet 2.

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NGSS.MS-PS2-1

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Two balloons are given an electrostatic charge by rubbing them with a wool cloth. Which observation provides evidence of the force that the balloons exert on each other over a distance because of their charge?

• The amount of rubbing with the wool cloth can change the amount of charge.

• Both Balloon 1 and Balloon 2 are pulled downward by the force of gravity.

• Moving Balloon 1 can make Balloon 2 move without the balloons touching.

• The charge on the balloons gets weaker over time until there is no charge.

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which apple has the greatest potential energy?

• The apple at the highest point on the tree

• The apple on the ground

• The apple in the middle of the tree

• All apples have the same potential energy

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

At what point does the car have the greatest amount of Potential energy?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS3-2

Where is the Kinetic energy the greatest?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Where is the amount of PE and KE equal?

• 1

• 2

• 3

• 4

Explain the energy transfer from point 1 to point 3 in the roller coaster system and why the transfer is occurring.

• Energy is transferred from potential to kinetic energy as the roller coaster descends, due to gravity.

• Energy is transferred from kinetic to potential energy as the roller coaster ascends, due to friction.

• Energy is lost entirely as heat between point 1 and point 3.

• No energy transfer occurs between point 1 and point 3.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A graph showing the kinetic energy and speed of a moving object is provided. What can be concluded from the graph?

• Kinetic energy is directly proportional to the square of speed.

• Kinetic energy is directly proportional to speed.

• Kinetic energy is inversely proportional to speed.

• As speed increases, kinetic energy increases.

Tags

NGSS.MS-PS3-1