2nd Grade Science : 2nd Grade Science

Study concepts, example questions & explanations for 2nd Grade Science

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Example Questions

Example Question #21 : Changes Caused By Heating And Cooling

An example of a change caused by heating or cooling that can be reversed would be the baking of a birthday cake.

Possible Answers:

True

False

Correct answer:

False

Explanation:

The statement above is a false statement and an example of how heating and cooling can NOT be reversed. If you bake a cake, a chemical change has occurred when the heat was applied. This cannot be reversed, and the cake cannot be returned to a batter or individual ingredients.

Example Question #22 : Changes Caused By Heating And Cooling

This photo represents a change due to heating or cooling that can be reversed.

Burnout, Match, Burned Down, Disease

Possible Answers:

False

True

Correct answer:

False

Explanation:

The statement above is a false statement and an example of how heating and cooling can NOT be reversed. Once a match is struck and lit, it cannot be reversed. The match can be put out, but it cannot "unlit" or brought back to its original state.

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