PS Unit 5 PS.5 AI Quizizz

A hydroelectric dam converts the potential energy of water into electrical energy. Which of the following best describes the process involved in this energy transformation?

• The water's potential energy is directly converted into electrical energy without any intermediate steps.

• The water's potential energy is first converted into kinetic energy, which then turns turbines to generate electrical energy.

• The water's potential energy is converted into thermal energy, which is then used to generate electrical energy.

• The water's potential energy is stored and not used for energy transformation.

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Consider a solar panel system used to power a house. Which of the following best explains how energy is transformed to meet societal needs?

• Solar panels convert thermal energy from the sun into chemical energy stored in batteries.

• Solar panels convert light energy from the sun into electrical energy, which is then used to power household appliances.

• Solar panels convert light energy from the sun into mechanical energy to power household appliances.

• Solar panels store light energy from the sun for later use without any transformation.

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A battery stores chemical energy. When used in a flashlight, this energy is transformed into light energy. Which of the following sequences best describes the energy transformations that occur in this process?

• Chemical energy → Thermal energy → Light energy

• Chemical energy → Electrical energy → Light energy

• Chemical energy → Mechanical energy → Light energy

• Chemical energy → Sound energy → Light energy

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Which of the following scenarios best illustrates the concept of energy being stored in different ways?

• A wind turbine generating electricity from wind.

• A compressed spring in a toy car that can be released to make the car move.

• A light bulb converting electrical energy into light.

• A car engine converting fuel into motion.

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VA.PS.5.a

In a coal-fired power plant, coal is burned to produce steam that drives a turbine. Which of the following best describes the energy transformations involved in this process?

• Chemical energy → Thermal energy → Mechanical energy → Electrical energy

• Chemical energy → Electrical energy → Thermal energy → Mechanical energy

• Thermal energy → Chemical energy → Mechanical energy → Electrical energy

• Mechanical energy → Chemical energy → Thermal energy → Electrical energy

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VA.PS.5.b

Which of the following best describes how energy can be transformed to meet the needs of a community using wind energy?

• Wind energy is stored as chemical energy in batteries for later use.

• Wind energy is converted directly into thermal energy to heat homes.

• Wind energy is converted into mechanical energy to drive turbines, which then generate electrical energy for community use.

• Wind energy is used to directly power vehicles without any transformation.

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A roller coaster at the top of a hill has a certain amount of potential energy. As it descends, this energy is transformed. Which of the following best describes this transformation?

• Potential energy is transformed into sound energy.

• Potential energy is transformed into kinetic energy.

• Potential energy is transformed into thermal energy.

• Potential energy is transformed into chemical energy.

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Which of the following best illustrates the transformation of energy to meet societal needs in a geothermal power plant?

• Geothermal energy is converted into chemical energy for storage.

• Geothermal energy is converted into thermal energy, which is then used to generate electrical energy for homes and businesses.

• Geothermal energy is directly converted into light energy for illumination.

• Geothermal energy is stored as potential energy for future use.

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Which of the following best describes how energy is stored in a hydroelectric power system?

• Energy is stored as chemical energy in the water.

• Energy is stored as potential energy in the elevated water behind the dam.

• Energy is stored as thermal energy in the water.

• Energy is stored as kinetic energy in the flowing water.

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In a nuclear power plant, nuclear energy is transformed to meet societal needs. Which of the following best describes this transformation process?

• Nuclear energy is converted directly into electrical energy.

• Nuclear energy is converted into thermal energy, which is then used to produce steam that drives turbines to generate electrical energy.

• Nuclear energy is converted into chemical energy for storage.

• Nuclear energy is converted into mechanical energy to power vehicles.

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