Science 1st Nine Weeks Prep

Which is an example of a touching force?

• a toy car with a string is pulled until it hits another one

• you rub a balloon on your shirt and hold it over your head to make the hair stand up

• you drop a feather from several different heights and see how fast it falls

• you pull a stack of paperclips using a magnet from one side to another

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If a weight and hook are attached to a rope on an object what will happen to it?

• The object is pushing on the table.

• The weights will push on the object.

• The object won't move.

• The weights will pull on the object and slide to the end of the table.

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Which of these is true about paper clips and magnets?

• Magnets attract paper clips at any distance.

• Magnets attract paper clips the farther they are from the magnet.

• Magnets attract nonmetal paper clips.

• Magnets attract paper clips the closer they are to the magnet.

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When you throw a pen and it goes up. What will happen to it afterwards? It will _________.

• go backward

• go up

• stay in the air

• go down

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Imagine you hold your lanyard and you pull it to one side. Then you let it go. What will happen to it?

• It will move higher each time it swings to the other side.

• It will stop in the middle before it reaches the next side.

• It will swing to the other side and then swing to the next.

• It will stay on one side.

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If I have 2 set of magnets and they both have a north pole and south pole towards each other, will they repel?

• Yes, since they are opposites facing each other. They will repel.

• Yes, since the same sides of the magnets are facing each other. They will repel.

• No, because the opposite sides of the magnet are facing each other. They will attract.

• No, because the same sides of the magnets are facing each other. They will attract.

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Magnets must have _________ sides facing one another to _________ towards each other.

• the same; pull

• the same; push

• opposite; pull

• opposite; push

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Which of these is a useful question for non-touching forces?

• What color is each of the magnets' sides?

• Can you make magnets move towards each other?

• What can you do to make magnets stronger?

• How many different ways can a magnet slide on a table?

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I have a magnet and some paper clips move toward it. What question can I answer since they attract?

• How far away can the magnet be from the paper clips to attract?

• Why do paper clips bend if they're made of metal?

• What touching forces are making the paper clips stick to the magnet?

• What materials make the magnet?

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If you are playing with a basketball and the ball gets stuck in the net, which of these is true?

• The forces are balanced.

• The forces are unbalanced.

• There are no forces acting on the ball.