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WorksheetsQuiz Review Science - Grade 4
Total questions: 25
Worksheet time: 13mins
Magnet is an object that produce magnetic field.
True
False
Magnet can pull or attract nail that are made of ....
rubber
copper
iron
plastic
Which one of these magnet is u-shape magnet?
Magnet are usually made of iron and ...
steel
copper
aluminium
plastic
Use a ... to keep magnet strong.
copper
keeper
cooper
cheaper
Jio has a bar magnet. He put his magnet near the computer. In what way would this affect the magnet?
the magnet become stronger
the magnet may repel the computer
the magnet may damage the computer
the computer turn on
Which of these object is magnetic materials?
Which of these object is non-magnetic material?
iron thumbtack
copper coin
steel bolts
iron nails
The pull of magnets on magnetic materials is called ...
magnetic push of repulsion
magnetic force of repulsion
magnetic pull of attraction
magnetic force of attraction
Two bar magnet are each hung from a string. When poles B and C are brought each other, they attract each other.
(A)N-pole – (B) S-Pole – (C) N-Pole – (D) S-Pole
(A)S-pole - (B) N-Pole – (C) N-Pole – (D) S-Pole
(A)N-pole - (B) N-Pole – (C) N-Pole – (D) N-Pole
A. (A)S-pole - (B) S-Pole – (C) S-Pole – (D) S-Pole
What happens when we place these two magnet near each other?
they produce sparks
they repel each other
they attract each other
they become weaker
Four thumbtacks were attracted to a magnetized steel bar. Tifa brought one end of a strong bar magnet close to the tip of the fourth thumbtack as shown in the diagram. Which one of the following did Tifa observe?
the fourth thumbtack move away from the magnet
the fourth thumbtack feel to the ground
the fourth thumbtack did not move
the fourth thumbtack move towards the magnet
The ... of magnet are parts where the magnetic attraction is the strongest.
attract
circuit
string
poles
Look at the picture! Part C is called ...
metal tip
metal filament
glass cover
metal casing
A path that electricity can flow through is called an electric circuit.
True
False
Which one of these circuit that will not light the bulb?
Look at the picture! When the switch are closed, what happen to the bulb?
the bulb melt
the bulb doens't light up
the bulb light up
the bulb burn out
An electrical component used to open or closed an electric circuit is called ....
bulb
wire
battery
switch
Look at the picture, this is a ....
closed circuit
open circuit
electric current
electric shock
The more bulbs connected one after another in an electric circuit, the bulb will be ....
dimmer
bigger
smaller
brighter
Which one of these object is a simple motor?
Which one of these object that uses a buzzer?
Look at the table! Which one is correct about the characteristic of closed circuit?
circuit A and circuit B
circuit A
circuit B
no one
Electricity can be dangerous because ....
it can give you an energy
it is cold
it is strong
it can give you an electric shock
Why we should not touch an electrical wires, devices or electric socket with wet hands?
because electric current can cause burns
because electric current will move into your hands
because electric current can flow through the water and give you an electric shock
because electric current will stop
