Energy 6th Grade

Which of these situations involves a decrease in chemical potential energy and an increase in kinetic energy?

• a battery powered toy car accelerates from rest.

• a phone's battery is being recharged.

• a marble is released at the top of a ramp and accelerates towards the bottom.

• a race car is refueled at a pit stop.

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NGSS.MS-PS3-5

Which is an example of the transfer of energy by a longitudinal wave?

• a large ocean wave knocks a person down.

• a guitar string vibrates after being plucked.

• S-waves cause the ground to move up and down during an earthquake.

• a door slams, and someone in the next room hears the sound.

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NGSS.MS-PS4-1

A student makes a model airplane. Its propellor is connected to a rubber band. The student twists the rubber band many times. When the plane is launched, the rubber band unwinds, the propellor turns, and the plane flies. Which statement best describes the energy of the system as the rubber band unwinds?

• elastic potential energy is transforming into kinetic energy

• kinetic energy is transforming into elastic potential energy

• gravitational potential energy is transforming into elastic potential energy

• chemical potential energy is transforming into kinetic energy

Tags

NGSS.MS-PS3-5

A hydroelectric power plant is located at the base of a dam. In the power plant, water flowing downhill spins turbines, causing a generator to produce electrical energy. Which best summarizes how the water’s energy is used?

• gravitational potential energy of the water is converted to kinetic energy

• chemical potential energy of the water is converted into kinetic energy

• kinetic energy of the water is converted to gravitational potential energy

• electric potential energy of the water is converted to kinetic energy

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

NGSS.MS-PS3-1

Which is an example of energy being transferred by a wave?

• an electric current in a copper wire transfers energy to a toaster

• energy from a vibrating drumhead is transferred to the ear of a listener

• to make it move, a rider transfers energy to a bicycle by pedaling

• a child transfers energy to a pinwheel by blowing on it

Tags

NGSS.MS-PS4-1

In photosynthesis, ________ energy is transformed into ________ energy in the plant. CHOOSE TWO.

• light

• mechanical

• chemical

• kinetic

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NGSS.MS-LS1-6

Which is an example of energy being transferred by a longitudinal wave?

• a child shakes the free end of a skipping rope that is tied to a tree

• a pebble falls in water and ripples travel along the surface

• two students hold a spring at either end, and one student shakes the end of the spring up and down.

• two students hold a spring at either end, and one student pushes and pulls the spring back and forth.

which type of energy stays the same throughout a rollercoaster ride?

• kinetic

• chemical

• potential

• mechanical

Disturbances that transfer energy from one point to another are called

• bolts
• mediums
• thunder
• waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which of the following scenarios best illustrates potential energy?

• A book placed on a shelf

• A running athlete

• Water boiling in a pot

• A bird flying in the sky

Answer explanation

A book placed on a shelf has potential energy due to its height above the ground. This energy can be converted to kinetic energy if the book falls. The other options involve motion or heat, which are not examples of potential energy.

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NGSS.MS-PS3-2