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WorksheetsFinal Exam Review
Total questions: 40
Worksheet time: 30mins
A magnet will pick up an object that is made of...
plastic
iron or steel
glass
copper
The strongest magnetic force of attraction of the magnet are ...
fronts
backs
poles
middle
Compass uses magnet. What is the purpose of a compass?
to tell you directions
to tell how far you have walked
to tell what time you left
to tell where the sun is
Kay places four ring magnets A, B, C and D onto a wooden stand as shown.
If he wants the four ring magnets to be attracted to each other, which magnet A, B, C or D should he flip?
A
B
C
D
The diagram shows what happens when two bar magnets are brought near to each other.
Which one of the following statements is correct?
X is S-pole but Y is N-pole
Both X and Y are S-pole
X is N-pole but Y is S-pole
The diagram shows an arrangement of three magnets. The poles of the magnets are labelled A, B, C, D, E and F respectively.
Which one of the following arrangements of the three magnets is possible?
Like poles __________ each other while unlike poles ___________ each other.
attract, repel
repel, attract
oppose, connect
connect, oppose
Some metals are magnetic materials and some are not. The following are made of metallic materials. Which one is magnetic?
aluminum
steel
tin
copper
What happens if you hold the north poles of two different magnets close to each other?
They will attract each other
They will repel each other
They will grow very hot
Nothing will happen
Bob placed Magnet X on Car 1 and Object Y on Car 2 as shown. He observed that the cars moved away from each other when they were placed near each other.
Which of the following statement(s) about Object Y is/are correct?
A: Object Y is a non-magnetic material.
B: Object Y is a magnetic material.
C: Object Y is a magnet.
A only
C only
A and B only
A and C only
These iron filings show __.
the magnetic field around the magnet
what a bar magnet looks like
the poles are the weakest part of the magnet
what the magnet is made of
True or False: All metals are attracted to magnets.
True
False
Which metals are attracted to magnets?
iron, nickel, steel
gold, silver, platinum
copper, magnesium, aluminum
What needs to be done to this switch so that the lamp lights up?
(a)
Classica makes a complete simple circuit with one bulb and three batteries. The bulb lights for an instant and then off. Why?
Too much electric current flows through the bulb's filament
Not enough electric current flows around the circuit
The batteries provide energy
Why is a bulb brighter when it is powered by two batteries rather than one?
Because the flow of electric current in the circuit is smaller
Because the flow of electric current in the circuit is the same
Because the flow of electric current in the circuit is larger
This is the symbol for a (a) ?
What makes up an electric circuit?
Bulb and battery
Bulb, battery and switch
Bulb, battery and wire
Look at the circuits in the diagram. In which circuit will the bulb be brighter?
Circuit A
Circuit B
Both circuits, the bulbs will have the same brightness.
Will the electric current flow in this picture?
Yes
No
Will the electric current flow in this picture?
Yes
No
Is it a safe use of electricity?
Yes
No
Why does this action is not safe? Choose the most suitable answer.
It may cause heat and fire.
It will shock you.
It cannot transfer electric current.
the device will work well
An object that does not vibrate cannot produce
light
heat
electricity
sound
Which sentence BEST describes how sound moves?
Sound can move through solids, liquids, or gases.
Sounds can move through solids and liquids, but not gases.
Sound can move through an empty space and through matter.
Sound can move through liquids and gases, but not through solids.
How loud or soft the sound is
pitch
acoustics
wavelength
volume
How quickly or slowly vibration is
pitch
volume
sound
acoustics
Study the diagram. Year 4 students use the identical bulb and battery. What is the variable to change in the circuit?
(a)
Study the diagram again. What are the variables that kept the same? Tick 3 (three) correct answers.
The number of bulb
The number of batteries
The type of the bulb
The arrangement of the batteries
