Transcript Magnets And Electromagnets

Magnets
and
Electromagnets
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
1
Q1. Name something
that can separate iron
filings from sand.
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
2
A1. A magnet
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
3
Q2. What do you call a
magnet that can be
turned on and off?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
4
A2. An electromagnet
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
5
Q3. Which pole of a bar
magnet points towards
the earth's Arctic
magnetic pole?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
6
A3. The north pole
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
7
Q4. Which pole of a bar
magnet points towards
the earth's Antarctic
magnetic pole?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
8
A4. The south pole
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
9
Q5. What type of
magnet remains
indefinitely (for ever)?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
10
A5. A permanent
magnet
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
11
Q6. What do we call a
wire wound into a spiral
of loops?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
12
A6. A coil
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
13
Q7. What do we call a
coil of wire used as an
electromagnet?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
14
A7. A solenoid
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
15
Q8. Name a device that
uses a magnet to show
directions north and
south.
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
16
A8. A compass
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
17
Q9. Name a sound
generator that uses an
electromagnet and a
chime.
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
18
A9. An electric bell
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
19
Q10. What do we call an
electrical switch
operated by an
electromagnet?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
20
A10. A relay
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
21
Q11. Where do old cars
and other waste metals
ends up?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
22
A11. A scrapyard
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
23
Q12. What word means
to use again?
(Think environmentally
friendly)
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
24
A12. To recycle
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
25
Q13. What is the central
part of a transformer or
electromagnet, usually
made of iron, called?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
26
A13. The core
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
27
Q14. What fills the
volume surrounding a
magnet, often
represented by a pattern
of lines?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
28
A14. A magnetic field
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
29
Q15. What do we call
the movement of electric
charge in a complete
circuit?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
30
A15. An electric current
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
31
Q16. What is the most
common magnetic
element?
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
32
A16. Iron
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
33
Q16. Name one of the
magnetic data storage
devices in a computer.
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
34
A16. The hard disk
The floppy disk
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
35
Well Done!
Now check your score
© NTScience.co.uk 2005
KS3 Unit 8j – Magnets and
Electromagnets
36