Year 8 assessment 1 (science).
Name:……. …………………………………………………………..
Class…………………………
.
Q1. Name the poles of a bar magnet (2 Marks).
Q2. Fill in the blanks using the keywords (7 Marks):
Attract, magnetic field, repel, compass, iron filings.
North Pole of a magnet will…………………………….…………..North pole of another magnet.
South Pole of a magnet will…………………………………………..North pole of a another magnet.
Needle of a compass lines up with the…………………………….. …………………………………..of a magnet.
You can find the shape of a magnetic field using………………………….. ..………………………… and also a
plotting……….......................................................
Q2. In the space below, draw magnetic field around a bar magnet (3 marks)
Q3. State the three things that affect the strength of an electromagnet. (3 Marks)
Q4. Circle the correct answer (11 Marks):
Electromagnet and a bar magnet have different types of magnets field.
True or False.
Electromagnet has more poles than a bar magnet.
True
or
Electromagnet poles are called East and West
True
or
Bar Magnets have poles which are called East and West
True
Bar magnet can be made stronger or weaker
True
Electromagnet can be made stronger or weaker
True
Electromagnet can be made much stronger than a permanent magnet
Electromagnet can be turned on and off
Magnet can move something without touching it
Electromagnet is required to make a motor
Maglev trains do not need electromagnets to levitate and move
False
False.
or
False.
or
or
False
False
True or False
True
True
True
True
or False
or False
or
False
or False
Q5 Use Keywords to fill the gaps below (19 Marks):
Scrap, move, motor, spins, current, magnetic field,
coil, North, South, attract, repel, compass, trains.
(Keyword maybe used more than once).
Magnets have a ………………………….…pole and a ………………..……...Two poles that are the
same will………………….………..and two poles that are different will…………….……The needle
of a ……………………………lines up in the ………….………… ………………………..Of a magnet. When
a current flows in a wire it produces a………………………… ……………..…………… around it. You
can make an electromagnet using a …………………...of wire with a ……..…………..flowing in it.
The shape of the ……………………. ………..……………….around an electromagnet is the same as
that around a bar magnet. When a…………………………..flows in a coil of wire between two
magnets then the coil……………………....This is how an electric………………………..…works.
In……………….…….yards electromagnet is used to lift and……………………….…around old junk
cars. Electromagnets can also be used to levitate…………………….….and push them forward.