7
lesson pretestMultiple Choice

Pretest

Question 7 • Physical Science

Jenny is trying to describe a wave. Which example would be the best description?

Answer
A
a toy car rear-ending a toy car that then rear-ends another toy car
B
two toy cars driving parallel to each other at the same speed
C
two toy cars driving away from each other at the same speed
D
a toy car hitting a wall and bouncing back

Explanation

A wave transfers a disturbance from one place to another, passing energy along without the whole medium traveling with it. In choice C, one toy car hits the next, which then hits another, showing the disturbance moving through a series of objects. The other choices describe cars moving together, apart, or bouncing off a wall rather than passing a disturbance along.

AI-written and checked against the verified answer.

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