Is there a way to measure magnetivity? How would you measure something like that?

Yes, you can do it with Teslameter. It´s relatively expensive apparatus or cheep (free) application on mobile. :-)

What are the materials that i can use to make a compass & one household magnet.

magnet that attract is northpole and sorthpole and the one that replling are northpole and northpole and sorthpole and sorthpole

i liked to play with magnets alot when i was little

so do i its because of the gravity on the earth!

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Physics library

Course: Physics library > Unit 18

Lesson 3: Measuring magnetic fields

Measure the Earth's field!

Google Classroom

You can use a bar magnet and a compass to get a rough idea of the strength of Earth's magnetic field

What happened?

The force on a compass due to the Earth's magnetic field is relatively weak. Think of it as a gentle magnetic breeze.

However the field near the household magnet is dense like a tornado. Strong near the magnet and very weak as you move away.

Challenge 1: How strong is the Earth's magnetic field?

Find (or make) a compass & 1 household magnet.

Can you determine the exact distance at which the household magnet force equals that due to the Earth's magnetic field?

What does this distance tell us?

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Jack McClelland
Posted 10 years ago. Direct link to Jack McClelland's post “Is there a way to measure...”
Is there a way to measure magnetivity? How would you measure something like that?
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(3 votes)
Answer
- Adam Effenberger
  Posted 10 years ago. Direct link to Adam Effenberger's post “Yes, you can do it with T...”
  Yes, you can do it with Teslameter. It´s relatively expensive apparatus or cheep (free) application on mobile. :-)
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  (2 votes)
Prajeya
Posted 9 years ago. Direct link to Prajeya's post “What are the materials th...”
What are the materials that i can use to make a compass & one household magnet.
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(2 votes)
Answer
- heidi ann venuto
  Posted 9 years ago. Direct link to heidi ann venuto's post “magnet that attract is no...”
  magnet that attract is northpole and sorthpole and the one that replling are northpole and northpole and sorthpole and sorthpole
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  (2 votes)
Servaich
Posted 7 years ago. Direct link to Servaich's post “How does the Earth create...”
How does the Earth creates magnetic field around it?
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(2 votes)
Answer
- APDahlen
  Posted 7 years ago. Direct link to APDahlen's post “Hi Servaich, Interesting...”
  Hi Servaich,
  
  Interesting question. Even more interesting is why doesn't Venus have the same magnetic field? Also, why is the field relatively weak on Mars?
  
  The literature describes a geodynamo. Here an electrical current flows in the molten core. This current gives rise to a magnetic field.
  
  Perhaps this link will help:
  
  http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/MagEarth.html
  
  Also, here are some interesting links:
  
  http://www.livescience.com/46694-magnetic-field-weakens.html
  http://www.livescience.com/18426-earth-magnetic-poles-flip.html
  
  Regards,
  
  APD
  Comment on APDahlen's post “Hi Servaich, Interesting...”
  (1 vote)
zorian.chowdhury
Posted 9 years ago. Direct link to zorian.chowdhury's post “i liked to play with magn...”
i liked to play with magnets alot when i was little
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(1 vote)
Answer
- lee anderson
  Posted 8 years ago. Direct link to lee anderson's post “so do i its because of th...”
  so do i its because of the gravity on the earth!
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  (2 votes)
Heather
Posted 9 years ago. Direct link to Heather's post “Would this distance be pr...”
Would this distance be pretty big, because of the size of the Earth.
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(1 vote)
Answer
- GeniusBrain1000
  Posted 9 years ago. Direct link to GeniusBrain1000's post “Yes, but because of the ...”
  Yes, but because of the mass and density of the of the Earth. Not exactly the size.
  Comment on GeniusBrain1000's post “Yes, but because of the ...”
  (1 vote)
William Kilpatrick
Posted 8 years ago. Direct link to William Kilpatrick's post “How can the north and sou...”
How can the north and south poles effect a compass
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(1 vote)
Answer
Jessica Wallach
Posted 3 years ago. Direct link to Jessica Wallach's post “Well, isn't a household m...”
Well, isn't a household magnet stronger than the earth's magnetic field? The earth's mag field strength is .000005 tesla and a refrigerator magnet is .005 tesla?
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(1 vote)
Answer
lee anderson
Posted 8 years ago. Direct link to lee anderson's post “what is the circumference...”
what is the circumference of the the earth? explain
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(1 vote)
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enjoyfamilylifeqj
Posted 9 years ago. Direct link to enjoyfamilylifeqj's post “How dose magnetism work?”
How dose magnetism work?
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(1 vote)
Answer
- Anselm Kiefner
  Posted 8 years ago. Direct link to Anselm Kiefner's post “It depends on the electro...”
  It depends on the electron configuration of the material. It is now possible to design materials that have magnetic properties from non-magnetic starting materials,
  
  http://www.nanowerk.com/nanotechnology-news/newsid=40988.php
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  (1 vote)
Anna
Posted 9 years ago. Direct link to Anna's post “Why have a compass where ...”
Why have a compass where 1 inch = 1 kilometer? That just does not sound reasonable.
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(1 vote)
Answer
- billybob3d
  Posted 8 years ago. Direct link to billybob3d's post “That's an orienteering co...”
  That's an orienteering compass. That scale is for use on maps and doesn't have anything to do with the compass itself. It's just another useful tool to have on hand alongside the compass and map.
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  (1 vote)