Heat and Temperature Concepts

Which of the following is a source of heat?

• Fire

• Ice

• Refrigerator

• Snow

What is the process of reducing an object's temperature called?

• Heating

• Melting

• Cooling

• Boiling

Which of the following is an example of a reversible change?

• Cooking an egg

• Burning paper

• Melting ice cream

• Baking clay

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Which of these changes is non-reversible?

• Water turning into ice

• Butter melting

• Sand turning into glass

• Ice cream melting