If the same poles facing each other, it will repel.

The magnets will repel each other.

A magnet ALWAYS has two poles.

The names of the poles of a magnet are positive and negative.

The magnetic fields can cause a pushing or pulling force even on objects that are not touching by the magnet.

Parts of a magnet that able to attract more iron filings than other parts are the poles.

What is the factor that causes an object to attract by a magnet?

An object that produces a magnetic field is . . .

Look at the picture! The objects . . . by magnet.

True or False.

Magnets can not attract metal objects without touching them.

If we put a paper clip on paper, the paper clip will be . . . by the magnet.

True or False.

Glass can attracted to magnets.

Which of the following will be attracted to magnets?

Which statement is true?

Which of these materials will a magnet attract?

What do you call the group of objects that are attracted to magnets?

How is magnet used in the picture?

What is the use of magnet in the picture?

What do you call the group of objects that are not attracted to magnets?

Which of the following transportation vehicles uses magnets?

What are the two poles on a magnet?

Is earth a magnet?

4. Like poles of a magnet _________ each other.

5. When a bar magnet is brought near iron dust, where will most of the iron dust sticks?

10. What is a device used by pilots and navigators to find directions?

A compass has a small needle magnet that always points North-South. This is because _____.

How do forces act when they are not in contact with each other?

What is this?

How many types of magnetic poles are there?

Name the shape of magnets in the given image.

Name the shape of the magnet in the given image

Three magnets A, B and C were dipped one by one in a heap of iron filings. Fig. 13.3 shows the amount of iron filings sticking to them. The strength of these magnets will be____.

In which direction does a magnet always point when suspended freely?

Which of the following will NOT be attracted by a magnet?

How is a compass useful to us?

When two same poles are brought together

Pushes and pulls are _____.

A force used to move an object away from you is called a _____.

The bigger the push or pull, the ____ the force.

During the tug of war, Cayden tries to pull the rope as strongly as he can toward himself.
Cayden _____ the rope.

Kimika makes an experiment.
First, she pushed a toy car with a small push and then measured how far it moved.
Second, she pushed the same toy car with a medium push, then measured how far it moved.
Third, she pushed the same toy car with a big push, then measured how far it moved.
Why does Kimika need to measure the distance each time?

Kimika makes an experiment.
First, she pushed a toy car with a small push and then measured how far it moved.
Second, she pushed the same toy car with a medium push, then measured how far it moved.
Third, she pushed the same toy car with a big push, then measured how far it moved.
She used the same toy car every time to make a fair experiment. What else needs to be the same?

Kimika makes an experiment.
First, she pushed a toy car with a small push and then measured how far it moved.
Second, she pushed the same toy car with a medium push, then measured how far it moved.
Third, she pushed the same toy car with a big push, then measured how far it moved.
What tool do you think she needed to measure the distance?

Kimika makes an experiment.
First, she pushed a toy car with a small push and then measured how far it moved.
Second, she pushed the same toy car with a medium push, then measured how far it moved.
Third, she pushed the same toy car with a big push, then measured how far it moved.
Why did she only change ONE thing and keep everything else the same?

The picture shows the result of Kimika's experiment, where she pushed a toy car through the same surface with different sizes of push force she gave to the toy car.

What do you think is the correct conclusion?

Chrissanli pushes a ball on a thick green carpet with a medium push.
Then he pushes the same ball on the floor with the same force.
He measures each distance and finds that on the carpet the toy car reaches a shorter distance.

Which prediction is likely correct?

Which of these surfaces causes the most friction?

Which conclusion is correct about how the surface affects friction?

If you try to push a book to the left, in which direction is the friction force acting?

The direction of the friction force is always _______ to the direction of the motion.

Rub your hands together.
What force acts between your moving hands?

Rub your hands together, giving only a small pressure while doing it. Do it for 30 seconds.
Then, rub your hands together, and give more pressure while doing it. Do it for 30 seconds.
What do you think happens?

Friction is a force that acts between two ________ in contact.

These options can increase friction, except _____.

These options can decrease friction, except _____.

Friction is a contact force. What is meant by a contact force?

The picture shows a vehicle towing a trailer across sand.
What provides the force to make the trailer move?

Why do some people put chains on their car tyres to drive in snow.

Grease is a thick, slippery stuff that helps things move smoothly. It is basically oil that is not liquid.
The picture shows a worker putting grease on the moving parts of a factory machine.
The purpose of doing it is _________.

The picture shows a liquid pouring between the parts of a machine that always move around each other.
What is he most likely liquid that used on these moving parts?

What happens if no oil used on moving parts of car's machine?

The picture shows a spring scale that is also known as a dynamometer or force meter.
What is measured by that tool?

What does friction do to a moving object?

Which best describes where friction takes place?

Collette is investigating the movement of a toy truck.
She lets the truck roll down a slope onto three different surfaces:
(a) glass; (b) wood plank; (c) sand and gravel.

She keeps everything else the same.

Which of the three surfaces will have the most friction?

Hazel do an experiment.
She moved a toy car through 3 different surfaces.
Other than the surfaces, she keeps everything else the same.
She repeated her investigation 3 times before concluding her experiment results.
Why did Hazel do that?

A ball stayed on the grass. Chrissanli kicked it, and the ball moved. Kicking a ball is an example of a _________________________ to move an object.

Which has the most slippery surface?

The most slippery surface creates the __________________ amount of friction.

Friction is a type of ___________________ force, which only happens when two objects are touching each other.

If you break a bar magnet into two pieces, each piece will have ___________.

Two magnets will push away (repel) from each other when the _____________________ poles are facing.

A magnet can pull a paper clip from a short distance because magnetism is a ___________________ force.

Objects that magnets can pull toward them are called ______________________ materials.

If friction didn’t exist, trying to walk would make me ___________________________.

Which is the correct statement?