WCAS Review : Thermal Energy and Conservation of Heat

What is thermal energy?

• The energy from the Sun

• The energy from the movement of molecules in an object

• The energy from motion

• The energy from electricity

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NGSS.MS-PS1-4

What is the main factor that determines how hot an object is in terms of thermal energy?

• Its color

• The speed of sound within it

• The motion of molecules within it

• Its weight

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Which of the following is an example of heat transfer through conduction?

• Feeling warm when standing near a campfire

• Boiling water in a pot

• A metal spoon getting hot when placed in hot coffee

• Heat moving through the air in a room

In which medium does convection typically occur?

• Solids

• Liquids and gases

• Metals

• Non-metallic materials

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NGSS.MS-ESS2-5

What is the main method of heat transfer that allows you to feel the warmth of the Sun on your skin?

• Conduction

• Convection

• Radiation

• Reflection

Which of the following is NOT a way heat can be transferred?

• Conduction

• Insulation

• Convection

• Radiation

What does the law of conservation of thermal energy state?

• Thermal energy can be created and destroyed.

• Thermal energy can only change from hot to cold.

• Thermal energy cannot be created or destroyed, only transferred or changed in form.

• Thermal energy always decreases over time.

How does a thermos bottle conserve thermal energy?

• By creating heat

• By preventing heat from escaping or entering

• By allowing heat to flow freely

• By cooling down the contents quickly

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What is insulation used for in homes?

• To make the house look nicer

• To keep heat inside during winter and outside during summer

• To provide shade in the summer

• To reduce noise from outside

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How do double-glazed windows help conserve thermal energy?

• They have two layers of glass with a vacuum in between.

• They make the room darker, reducing the need for heating.

• They allow heat to escape freely.

• They have a single layer of glass.

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