STAAR Released Questions 5.6A Energy

Front

What is mechanical energy?

Back

Mechanical energy is the energy that an object has due to its motion or position. It can be kinetic (energy of motion) or potential (stored energy).

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What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total energy of all the particles in an object.

Front

What is electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons. It is used to power devices like lamps and computers.

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What is sound energy?

Back

Sound energy is the energy produced by vibrating sound waves. It is how we hear sounds.

Front

What is light energy?

Back

Light energy is a form of energy that is visible to the human eye. It is produced by sources like the sun and light bulbs.

Front

What is the process of evaporation?

Back

Evaporation is the process by which liquid water turns into water vapor (gas) when it is heated.

Front

How does temperature affect evaporation?

Back

Higher temperatures increase the rate of evaporation because more molecules have enough energy to escape the liquid.

Front

What is the role of energy in changing states of matter?

Back

Energy is required to change states of matter, such as from solid to liquid (melting) or from liquid to gas (evaporation).

Front

What is an example of energy transformation?

Back

An example of energy transformation is when electrical energy is converted into light energy in a light bulb.

Front

What is the relationship between sound and mechanical energy?

Back

Sound energy is produced by mechanical energy when objects vibrate, creating sound waves.