• Like
Magnetism
Upcoming SlideShare
Loading in...5
×
Uploaded on

The grade 10 magnetism presentation

The grade 10 magnetism presentation

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
116
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
10
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. 1 Everything Science www.everythingscience.co.za 15. Magnetism Physics: Electricity and magnetism Grade 10
  • 2. 2 Everything Science www.everythingscience.co.za Magnets and magnetism Magnetism is an interaction that allows certain kinds of objects, which are called ‘magnetic’ objects, to exert forces on each other without physically touching. A magnetic field is a region in space where a magnet or object made of magnetic material will experience a non-contact, magnetic force. Some substances can be easily magnetised. Other substances are not easily magnetised. Image by Colleen Hennings
  • 3. 3 Everything Science www.everythingscience.co.za Permanent magnets A magnet has two poles: north (N) and south (S). Like (identical) poles of magnets repel one another whilst unlike (opposite) poles attract. This means that two N poles or two S poles will push away from each other while a N pole and a S pole will be drawn towards each other. Magnetic fields can be represented using magnetic field lines starting at the North pole and ending at the South pole.
  • 4. 4 Everything Science www.everythingscience.co.za Compasses and the Earth's magnetic field The Earth also has a magnetic field. A compass can be used to find the magnetic north pole and help us find our direction. The Earth’s magnetic field protects us from being bombarded by high energy charged particles which are emitted by the Sun. The Aurorae are an effect of the Earth’s magnetic field. Image by Alex (Spoons) on Flickr
  • 5. 5 Everything Science www.everythingscience.co.za For more practice or to ask an expert for help on this section see: www.everythingscience.co.za Shortcode: ESAEF
  • 6. 5 Everything Science www.everythingscience.co.za For more practice or to ask an expert for help on this section see: www.everythingscience.co.za Shortcode: ESAEF