5th Science - Matter Part 2

What is a conductor of thermal energy?

• A material that lets heat pass through easily.

• A material that does not let heat go through.

• Somebody who drives a school bus.

• Somebody who directs the music symphony.

Answer explanation

Thermal Energy is the same as heat. A material that conducts heat or thermal energy is called a conductor.

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What is an insulator of thermal energy?

• A material that is magnetic.

• A material that does not let heat through easily.

• A material that lets heat through easily.

• A material that conducts electricity.

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Thermal energy is also known as ​ (a)  

• heat energy.
• super energy
• cold energy
• great energy

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Organize these options into the right categories

Groups:

(a) Conductor of Thermal Energy

,

(b) Insulator of Thermal Energy

• Cobalt

• Paper

• Copper

• Wood

• Iron

• Plastic

• Cardboard

• Steel

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Which materials are usually good conductors of electrical energy?

• Most paper.

• Most plastics.

• Most metals.

• Most woods.

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Your class is participating in a "Tiny Robot Rescue" challenge as part of your electrical safety unit. The challenge involves retrieving small robot parts that have fallen near a live electrical outlet in a mockup of a futuristic laboratory. Your team must choose the safest tool to recover these delicate components without risking electrical shock.

• Metal tweezer

• Plastic ruler

• Aluminum foil

• Copper wire

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Pedro notices that his grandmother uses different spoons when cooking. Some have wooden handels and others have metal handles. Why might wooden handles be better to use when cooking?

• Wood is lighter than metal

• Wood is softer than metal

• Wood is easier to clean

• Wood does not get as hot as metal

• Wood is better for your skin

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Arturo is trying to create a container to keep food cold for a long time so it does not go bad. He has tried different materials. Which material would be best for him to use to build his container?

• Steel because it will keep food cold.

• Paper and cardboard because they are insulators.

• Aluminum foil because it gets cold to the touch.

• Glass because it creates condensation when cold.

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The diagram shows an electrical plug with a cord that has been cut. Use the diagram to answer the question. Which parts of the electrical plug will insulate against heat loss and will not conduct electricity well? Choose TWO.

• Part A

• Part B

• Part C

• Part D

• All the parts

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A mixture is ​ (a)   or more substance(s) that are combine but do not form a new substance.

• one
• none
• all