Ke and Pe

Which has more KINETIC energy and WHY? (Choose the BEST explanation!)

• The car at the top because it is not moving, so it has more potential energy.

• The car at the top because it is higher off the ground, so it has more GPE.

• The car at the bottom because it is going faster.

• The car at the bottom because it can't go any lower.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Choose the answer that has the most ELASTIC POTENTIAL energy.

• a rubber band pulled back all the way

• a rubber band pulled back part of the way

• a rubber band laying on a table

Choose the answer that has the most GRAVITATIONAL POTENTIAL energy.

• a 500 kg boulder on a 5 meter hill

• a 500 kg boulder on a 10 meter hill

• a 500 kg boulder on a 20 meter hill

Tags

NGSS.MS-PS3-2

Choose the answer that has the most GRAVITATIONAL POTENTIAL energy

• a bird flying 7 kmph 3 meters off the ground

• a bird flying 7 kmph 6 meters off the ground

• a bird flying 10 kmph 3 meters off the ground

What two factors affect kinetic energy?

• mass

• speed

• height

• mass and speed

• mass and height

Tags

NGSS.MS-PS3-1

Which has more GRAVITATIONAL POTENTIAL energy and WHY? (Choose the BEST explanation!)

• The car at the top because it is not moving, so it has more potential energy.

• The car at the top because it is higher off the ground, so it has more GPE.

• The car at the bottom because it is going faster.

• The car at the bottom because it can't go any lower.

Tags

NGSS.MS-PS3-2

What is the mechanical energy of a system?

• just potential energy

• just kinetic energy

• the sum of the potential and kinetic energy

• kinetic energy minus potential energy

A plane flying above the ground has what energy?

• Only GPE because it is high

• Only KE because it is moving

• GPE and KE because it is off the ground and moving

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Mechanical Energy

• the sum of all of the potential and kinetic energy

• the amount of energy in a system

• the change of energy from one form to another

• this states that the total energy of a system remains constant — it is said to be conserved over time

Tags

NGSS.MS-PS3-4

Potential Energy

• stored energy; energy of position

• energy stored in the bonds of atoms

• energy stored in an object that is stretching or compressing

• the energy stored in an object due to its height

Tags

NGSS.MS-PS3-2