MP1 - Science Test 1

The model shows a force acting on a car. The amount of the force is represented by the size of the arrow.

A second force is applied to the car. As a result, the car’s motion stops changing. Which of the following models best represents the forces acting on the car as the second force is applied?

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• 
• 
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Which definition best defines force?

• a force is a row of bowling pins

• a force is always very strong

• a force is a push of pull, and force is required to change the motion of an object

• a force is always very weak

Which image shows the magnets repelling?

• Image 1

• Image 2

Vincent wants to move an object using touching forces. Which test will show that touching forces

move objects?

• He could drop a feather from several different heights and see how fast it falls.

• He could pull a toy car with a string until it hits another toy car.

• He could rub a balloon on his shirt and rub it on his head to make his hair stand up.

• He could use a magnet to pull a stack of paper clips from one end of the table to another.

True or False? All metals are attracted to magnets.

• True

• False

The image shows a phone being dropped on to the ground. What non-touching force pulls the phone to the ground?

• magnetic force

• attraction

• gravity

• repulsion

What do scientists call it when a magnet pushes away another magnet?

• attract

• poles

• repel

• investigation

The Earth pulls objects down with the force of __________.

• pushing force

• magnetic force

• touching force

• gravity

A force is a _________ or pull that can start, stop, or change the direction of an objects motion.

• push

• pull

• force

Is this picture an example of balanced or unbalanced forces?

• balanced forces

• unbalanced forces