2023-24 Physical Science Chapter 14B

Energy in a "Closed System" is _________________.

• created

• conserved

• destroyed

• wasted

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NGSS.MS-PS1-5

Where does a pogo stick rider have the maximum amount of gravitational potential energy during his/her jump?

• lowest position of the jump

• middle of the jump

• top of the jump

• gravitational potential energy is the same at all positions

• depends on the type of spring or compressed air

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NGSS.MS-PS3-2

For a fraction of a second, the pogo stick rider has no kinetic energy at the top of his/her jump.

• True

• False

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NGSS.MS-PS3-2

During the pogo stick rider's decent gravitation potential Energy is converted to ______________ Energy.

• Kinetic

• Elastic

• Potential

• Mechanical

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

At each stage of a pogo stick jump the total energy _______________.

• Stays the same

• Changes constantly as the pogo stick ascends and decends

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NGSS.MS-PS3-5

The sum of a pogo stick's potential and kinetic energies equals the original amount of potential energy alone.

• True

• False

As soon as a pogo stick system and its rider hit bottom and can go no further down, most of the gravitational potential energy has been converted to ______________________ energy

• Kinetic

• Potential

• Elastic

• Mechanical

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

As the pogo stick hits the ground the cylinder uses pogo stick's kinetic energy and remaining gravitation potential energy to do work on gas molecules (or spring) inside the cylinder. As the gas (or spring) is compressed the pogo stick's energy is converted to _______________ Energy.

• additional kinetic

• less kinetic

• additional gravitational potential

• Elastic potential

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

During rebound of the pogo stick, when the stick's kinetic energy has all been converted to elastic potential energy, the elastic potential energy works on the gas molecules (or spring) to convert its elastic potential energy to __________________ Energy.

• Kinetic

• Gravitational potential

• Mechanical

• Potential

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

When the pogo stick's gas (or spring) has maxed out and converts back to Kinetic Energy, as the pogo stick rises, its kinetic energy shifts back during the rise of the pogo stick to _________________________energy.

• kinetic

• gravitational potential

• elastic potential

• mechanical

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NGSS.MS-PS3-2

NGSS.MS-PS3-5