Energy Transfers and Transformations

Plants use energy from the sun in the process of photosynthesis to manufacture glucose. The energy transformation is:

• radiant to chemical

• thermal to mechanical

• electrical to radiant

• radiant to thermal

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A lamp is plugged into a wall socket. Once the lamp is turned on, both light and heat come from the lamp. The energy transformation is:

• electrical to radiant and potential chemical

• electrical to radiant and thermal

• electrical to radiant and nuclear

• electrical to radiant and mechanical

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NGSS.MS-PS3-5

If you bounce a tennis ball on the ground, it will bounce back up, but not to the original height from where it was dropped. What is taking place, energy-wise speaking?

• At impact, the kinetic energy is transferred to the floor, and converted to heat and sound. These other forms of energy are not recoverable, so the kinetic energy bouncing up is less than bouncing down.

• At impact, the potential energy is transferred to the ball itself, and converted to chemical and sound energies. These other forms of energy are not recoverable, so the kinetic energy bouncing up is less than bouncing down.

• At impact, the kinetic energy is transferred to the ball itself, and converted to heat and sound. These other forms of energy are not recoverable, so the kinetic energy bouncing up is less than bouncing down.

• At impact, the mechanical energy is transferred to the ball itself, and converted to kinetic and sound energies. These other forms of energy are not recoverable, so the kinetic energy bouncing up is less than bouncing down.

Tags

NGSS.MS-PS3-5

Which statement summarizes the Law of Conservation of Energy?

• Energy is never created, but can be destroyed when heat is created in an exchange

• Energy is never created or destroyed; it is only transformed from one form of energy to another.

• Energy is never created or destroyed. It is only created when energy is created from matter.

• Energy is never destroyed or created except when there is a nuclear reaction.

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What type of energy do wind turbines convert into electrical energy?

• Solar

• Kinetic

• Thermal

• Chemical

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Batteries have ​ (a)   energy that they change into ​ (b)   energy when plugged in

• chemical

• electrical

• kinetic

• sound

• light

• heat

A ball sitting at the top of a ramp. As the ball rolls down the ramp, the potential energy of the ball decreases. What happens to the potential energy as the ball moves?

• It is lost as gravitational energy

• It is converted to kinetic energy.

• It is used to make the ball slow down

• it is destroyed as the ball moves

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Carlos waits for the bus and discovers his hands getting very cold. He rubs his hands together vigorously in order to warm them up. Which of the following best explains what causes CHarlotte's hands to warm as she rubs them together?

• mechanical energy is transformed into nuclear energy

• thermal energy is transformed into electromagnetic energy

• potential energy is transformed into chemical energy

• kinetic energy is transformed into thermal energy

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NGSS.MS-PS3-5

This is the energy associated wityh the movement of electrons through a wire or circuit.

• electrical

• mechanical

• nuclear

• kinetic

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NGSS.MS-PS2-3

This is the energy of an object due to its motion, position, or condition. It's the combined total of potential and kinetic energy of an object.

• motion energy

• mechanical energy

• nuclear energy

• thermal energy

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