Forces post-quiz

Which two tools below would be most useful in testing how the mass of an object can affect the distance it moves after being pushed?

• Spring scale and hot plate

• Balance and meter stick

• Graduated cylinder and beaker

• Magnet and thermometer

If a student has two magnets, how might it be determined which magnet is stronger?

• Count how many paper clips each magnet can lift.

• Submerge each magnet in a bowl of water.

• Examine each magnet to determine the north pole.

• Measure the length and the mass of both magnets.

Students conducted an investigation in which they rolled a soda can down a ramp that was 30 cm high and one that was 40 cm high. Which question were the students most likely trying to answer?

• How does mass of a soda can affect the distance it will roll?

• How does surface friction affect the distance a soda can will roll?

• How does the size of a soda can affect the distance it rolls?

• How does ramp height affect the distance a soda can rolls?

A science class wanted to know if a golf ball and a table tennis ball would roll the same distance after rolling down a ramp. Which of the following shows a fair test of this idea?

• A

• B

• C

• D

Students conducted an investigation in which they measured the distance a toy car traveled after rolling down a ramp covered with sandpaper or wax paper. Which of these questions can the students answer by analyzing the results of their investigation?

• How does changing the height of a ramp affect the distance a toy car rolls?

• How does changing the surface of a ramp affect the distance a toy car rolls?

• How does mass affect the distance a toy car moves after rolling down a ramp?

• How does the design of a toy car affect its movement after rolling down a ramp?