Science Review PTS 2 Grade 4

Science Review for PTS_4

By Yoshy Faweta

• Explore the forces between magnets and know that magnets can attract or repel each other

• ​Know that magnets attract some metals but not others​

​How Magnet Work

Multiple Select

Which of the followings are the correct properties of magnet?

Choose more than one answer.

• Magnet has two poles, south and north

• Poles of magnet always exist in pair

• like poles of two magnets will repel each other

• unlike poles of two magnets will repel each other

• magnet can attract non metal

Multiple Choice

Property of magnet shows by this picture is ...

• magnet has two poles

• the strongest power of attraction are magnet's poles

• like poles repel each other

• unlike poles attract each other

Multiple Select

Which of the following objects are magnetic?

(Choose more than one answers.)

Multiple Select

Which of the followings are the magnetic materials? (2 answers)

• aluminum

• iron

• steel

• copper

Multiple Select

Here are magnets with different direction of the arrows. Why do you think this happened? (2 answers)

• like poles attract

• like poles repel

• unlike poles repel

• unlike poles attract

Multiple Select

Which pictures show repel action?

(Choose more than one answers.)

Multiple Select

If magnet that hold by a hand is moved closer to magnet on the toycar, which toycar will move backward?

(Choose more than one answers.)

Multiple Select

Which of the following are non-magnetic?

(Choose more than one answers.)

Multiple Choice

There are 3 magnets, magnet A, B and C.

Magnet A and B attract each other but magnet B and C repel each other as shown in the picture.

if poles of magnet A are known, what pole that represented by Y?

• North

• South

Using Magnet they can be separated (dipisahkan)

​

The iron will stick to magnet but the sand will left behind​

​

​Iron filling (serbuk besi) commonly mixed up with sand

​

• Construct complete circuits using switch, cell (battery), wire and lamps

• ​Explore how an electrical device will not work if there is a break in the circuit

• Know that electrical current flows and that models can describe this flow​

​Electric Circuit

Multiple Choice

Control the flow of electric current is the function of....

• battery

• wire

• switch

• bulb

Multiple Select

The circuit that will work is....

(choose more than one answers)

Multiple Choice

Removing one battery from the circuit below will cause....

• brighter light

• dimmer light

• the same brightness

Multiple Select

An object that can replace switch is ....

Multiple Select

Why does the bulb light off in this circuit? (2 answers)

• the switch is off

• the switch is closed

• the switch is open

• the switch is on

Multiple Choice

The correct safety precaution for this picture is ____.

• Do not overload

• Use more plugs

Multiple Choice

The correct safety precaution for this picture is ____.

• NEVER pull a plug an outlet by its cord

• PULL a plug by its cord