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
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