EVS revision - R6

Which instrument is shown in the image ?

• Metal detector

• junkyard crane

• MRI machine

• Musical equipment

Tom has some plastic letters that stick to the refrigerator. What can he infer ?

• They have steel inside them

• They have thermal energy

• They have magnets inside them

• They have glass inside them

Observe the image

What attracts the iron pins to the magnet.

• Magnetized mineral

• magnetic force

• magnetic compass

An electromagnet in a junkyard is used to lift

• plastic items

• glass items

• wooden items

• iron or steel objects

Two bar magnets will attract if...

• They do not have North and South Poles

• The two North poles are facing each other

• The two South poles are facing each other

• The North pole of one faces the South pole of the other

The parts of a basic electromagnet are :

• A piece of iron

• A coil of wire called the solenoid

• A battery or power source

• All of the above

A scientist who studies chemistry is called as

• physicist

• chemist

As two magnets move further and further away from each other, the strength of attraction...

• becomes weaker.

• stays the same.

• gets stronger

• none of the above.

How can you tell that an object is magnetic?

• Check if it sticks to a plastic block

•  Check if it sticks to a glass block.

• Check if it sticks to an iron block

• Check if it sticks to a rubber block.

A compass needle is actually a ____________________

• Wire

• Toy

• Magnet

• Sewing needle