PS.7.1.1

Front

Why can't the cyclist (#3) be used as a good reference point?

Back

A good reference point should not move.

Front

Back

B

Front

Back

B

Front

Back

D

Front

Back

C

Front

Back

C

Front

What best describes motion?

Back

change in position over time

Front

Who is correct in the debate about the frog's movement and why?

Back

Maria- an object has to change position to “move”.

Front

Why do scientists use a reference point?

Back

To determine if an object is in motion

Front

Which of the following objects would make a good reference point? A flying bird, A bus that is driving down the street, A car at a stoplight, A tree

Back

A tree