Ok Guys this is my presentation...

1. NOTES ON THE EARTHS
MAGNETOSPERE
By Josephine Kooij
Wonhee Cho
Michael Ko

2. INTERESTING FACTS ABOUT THE EARTHS
MAGNETOSHPERE
 Earth has a Magnetic field.
 The space affected by earths magnetic field is
called the magnetoshpere.
 This deflects (change word)charged particles
from the sun
 A theory is that movement of molten iron in the
outer core generates earths magnetic field
 It defelcts particles from the sun
 It even changes direction

3. INTERESTING FACTS ABOUT NATURES
MAGNETS
Animals use magnetism to find their way

 They have magnetite in their body to tell the way
 These contain only one magnetic domain, so small

4. HTTP://VIDEOS.HOWSTUFFWORKS.COM/HSW/11
959-MAGNETISM-THE-EARTHS-MAGNETIC-
FIELD-VIDEO.HTM

5. HOW A COMPASS WORKS?
A compass rotates till it’s needle (a bar magnet) aligned

with the earths magnetic field
 It detects and measures the earths magnetic field

6. MAGNETIC JEOPARDY
By Won Hee Cho
Josephine Kooij
And Michael Ko

7. End…
JEOPARDY BOARD
Magnetic
Magnetism
Magnets
Fields
100 100 100
200 200 200
300 300 300
400 400 400
500 500 500

8. WHAT CAUSES A COMPASS NEEDLE TO
ROTATE?
A. The earths magnetic field

 B. natures magnets
 C. magnetic domains
 D. Electrons

9. DOES THE EARTHS MAGNETIC FIELD EVER
CHANGE DIRECTION???
A. Yes

 B. No
 C. very rarely
 D: It may happen in a couple years time

10. WHAT IS THE NEEDLE OF A COMPASS???
 A: A titanium wand that uses magic to detect
the north…
 B: A Piece of Metal broken off from the north
pole…
 C: A small bar magnet with a north and
south pole…
 D: A piece of plastic painted with spray paint
to look as If it’s made out of metal…

11. WHAT SIZE IS THE PIECES OF MAGNETITE IN
ANIMALS’ BODIES???
A small, single magnetic Domain…
A:
B: Really, Really small…
C: Really, Really Big…
D: It’s not scientifically proven…

12. DO THE MAGNETIC POLES
MOVE???
Yes
A:
B: No
C: It hasn’t been proven
D: It Depends

13. THAT HELPS SCIENTISTS TO DETECT THE
EARTHS MAGNETIC FIELD OVER THE
YEARS???
A:The rock cools and the magnetic domains freeze

into place so that Scientists can see how the earths
magnetic field changed…
 B: The Rock cools down then explodes into tiny
pieces…
 C: The rock cools down then splits in half and tiny
crystals fall out…
 D: The Rock cools down then turns into another
rock…

14. HOW MANY MAGNETIC POLES DOES A
MAGNET HAVE???
 Just One…
 Two
 Three
 Four

15. IS MAGNETISM LIMITED TO JUST BAR
MAGNETS?
A. Yes
B. No
C. No but it can only reach to a certain point
D. Not proven to be

16. TRY AGAIN…
T.T

17. WHAT IS THE REGION OF SPACE AFFECTED BY
EARTHS MAGNETIC FIELD?
A. Magnetic domains
B. The inner core
C. The earths mantle
D. Magnetosphere

18. WHAT DO ANIMALS HAVE IN THEIR BODIES
THAT ACTS LIKE A COMPASS?
A. Tiny magnetic fields
B. A type of compass that sends a message through the nervous
system telling the bird which way north is
C. They have tiny pieces of magnetite
D. Thousands of little magnetic domains that move just the tiniest bit to
North telling the bird which way north it

19. WHAT IS USED TO DETECT/MEASURE THE
EARTHS MAGNETIC FIELD?
A. A compass
B. A machine that reacts to the earths south pole and repels it
C. Hydrometer
D. A compass rose

20. CORRECT!!!

21. WHAT DEFLECTS THE PARTICLES FROM THE
SUN???
 A: Super-Strong Lasers that are constantly
shooting at the sky.
 B: The Earth’s Magnetosphere.
 C: Special Fans that blow the particles
away.
 D: The fumes from factories that trap the
particles and carry them away…

22. HOW ARE MAGNETS IN AN ANIMAL?
A. Just naturally
B. Their mothers take out some parts of theirs and give it
to the baby
C. Humans put them in at birth, some animals don’t have it
D. It’s formed when an animal is born, the intestines and little parts of
the left brain are put together to form this small magnet inside the body.

23. ANIMALS NOT ONLY USE THE EARTHS MAGNETIC
FIELD FOR NAVIGATION BUT ALSO…
A. The magnetic domains floating around in the sky
C. The position of the sun or stars
B. Little compact particles in water
D. The sounds the earths magnetic field gives off

24. THE EARTHS MAGNETIC FIELD IS LIKE THAT
OF A BAR MAGNET WITH THE MAGNETS
SOUTH POLE NEAR THE…
A. Earths south pole
B. Earths north pole
C. East pole
D. West pole

25. THANKS FOR WATCHING!!!
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