WorksheetsReview ASAS (Magnet, Electricity, Sounds) - Grade 4
Total questions: 30
Worksheet time: 3600secs
Ilayya wants to experiment her magnet to know the magnetic force of attraction with some materials. There are steel pins, cotton thread, aluminium zipper and iron thumbtack. When she put her magnet near each material, not all the materials are attracted. Which materials cannot attract by the magnet? (Choose more than one)
aluminium zipper
iron thumbtack
steel pins
cotton thread
What is the function of the wire in an electric circuit?
to open and close an electric circuit
produce heat and light
provides energy to push electric current flow
connect all the component in an electric circuit
Which the correct picture when two magnet meet each other? (Look at the arrow)
The S-Pole of a magnet will ... the S-Pole of another magnet.
(a)
Electric circuit that will work is ....
A drum produces sounds when it is hit because the drum skin vibrate.
True
False
Study the sound level diagram above. Based on the diagram, the sound level in power mower is about ... dB.
80
90
100
120
Why we should not touch an electrical wires, devices, or electric socket with wet hands?
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
because electric current will move into your hands
Look at the table. The french horn is quieter than the drum.
True
False
Riri is at a swimming pool. There is music coming out from a loudspeaker beside the pool. How can Riri hear the music from the loudspeaker when she is underwater?
the music travel through air and solid to his ears.
the music is loud.
the music travel through air and water to his ears
the loudspeaker is big
There are four musical instruments in the violin family. The strings of these instruments vibrate to produce sound. Which of these musical instruments makes the lowest pitch sound?
(a)
Which of these materials that can be separated by magnets?
(Choose more than one)
iron thumbtack and iron nails
iron nails and copper wire
cotton towel and rubber band
steel pins and aluminium coins
What can we do to make the lamp glow brighter?
add more battery to the circuit
add more bulb to the circuit
remove one battery from the circuit
make the wire become longer
If we want to produce lower pitch in guitar, we must pluck ....
the string harder
the longer string
the thinner string
the shorter string
Which of these things are non-magnetic materials?
aluminium zipper
iron thumbtack
steel fork
glass marble
What is the name of electrical component that used to open or closed the circuit?
(a)
Sound are made when things or air (a)
Train moving is about ... dB.
(a)
What happens when we place these two magnet each other?
(a)
Look at the picture! The non-magnetic materials are ...
(Choose more than one)
p
Q
R
S
A high pitched sound are made when things or air vibrate (a)
cow mooing is example of ... pitch.
(a)
There are 4 magnets that attract some paper clips. The weakest magnet is magnet (a)
Look at the picture! This is an ... circuit.
(a)
Electric current can only flows through ... circuit.
(a)
The sound above 180 db is the sound of ....
people talking
at the rock concert
train moving
rocket taking off
Which object that can be attracted by the magnet?
gold necklace
wooden table
rubber ball
nickel coin
Rayhan makes a bell using a pot and a mallet.
He hits the pot with the mallet. The bell makes a quiet sound.
To make the volume of sound become softer he must ….
use a smaller pot
use smaller mallet
hit the pot gently
hit the pot strongly
if we want to produce highest pitch in guitar, we must pluck...(Choose two answer)
the thicker string
the string hardly
the shorter string
the longer string
An electrical component use to provides energy to make the electric current flow in the electric circuit is called ...
battery
wire
switch
lamp
