Science Energy

When hot and cold objects touch, their molecules collide wherever they meet. Molecules with higher kinetic energy pass along their energy to lower-energy molecules. In the same way, heat moves from hot objects to cold objects until their temperature is the same. What is the movement of heat from one object to another called?

• thermometer

• condensation

• radiation

• conduction

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

Energy is conserved within a system, meaning that forms of energy are either transferred or transformed as they interact with objects. Which of the statements below correctly describe how energy is transferred or transformed in daily life?

• Nuclear energy is transferred to electrical energy to provide electricity for our homes.

• Kinetic energy transforms into thermal energy when a heating pad is turned on.

• Chemical energy in food is transformed into mechanical energy as our body rides a bicycle down the street.

• Electrical energy is transferred into light energy so that a flashlight generates light when it’s turned on.

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NGSS.HS-PS1-4

NGSS.HS-PS3-3

NGSS.HS-PS3-4

The electromagnetic spectrum ranges from radio waves to gamma rays. What is the relationship between wave frequency and energy level?

• The higher the frequency, the lower the energy level.

• The higher the frequency, the higher the energy level.

• The lower the frequency, the higher the energy level.

• The lower the frequency, the more mid-range the energy level.

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NGSS.MS-PS4-1

The sun’s energy arrives as radiation. Which statement about electromagnetic radiation is correct?

• All radiation is visible.

• All radiation is invisible.

• Radiation is the transfer of energy as waves.

• Radiation travels faster than the speed of light.

What is the term for the ability to do work or cause change?

• Power

• Energy

• Force

• Momentum

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NGSS.MS-PS3-2

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What type of energy transformation occurs when a lamp is turned on?

• Chemical to electrical

• Electrical to light

• Kinetic to thermal

• Potential to kinetic

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DOK Level 1: Recall

What is energy fundamentally described as?

• The ability to do work or produce heat

• A type of wave

• A chemical substance

• A form of matter

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DOK Level 1: Recall

Which of the following best describes the energy transformation in a bouncing ball?

• Kinetic to potential to kinetic

• Potential to kinetic to potential

• Thermal to kinetic to potential

• Electrical to kinetic to potential

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DOK Level 1: Recall

In which list are forms of electromagnetic energy arranged in order from longest to shortest wavelength?

• Microwave -> Radio wave -> Infrared rays

• Visible light -> x-ray -> radio wave

• Microwave -> infrared -> visibile light

• Infrared -> radio wave -> ultraviolet

Most people understand that resources need to be conserved. For example, when brushing your teeth, you conserve water by turning it off until you need it again. Energy within a system follows the Law of Conservation of Energy, so what does the Law of Conservation of Energy mean?

• Energy cannot be transferred or used up.

• Energy cannot be destroyed or created

• Energy can be lost or made.

• Energy can be transformed and destroyed.

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NGSS.HS-PS3-2

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