Step 9 of 18 · Forces · SC4-FOR-01
Magnets
Like poles repel, unlike attract — and only iron, nickel, cobalt and steel join in.
Learn it
Describe magnetic poles, fields and materials, and how electromagnets are used
Idea 1 of 4
Two poles, always
Every magnet has a north-seeking pole and a south-seeking pole. Like poles repel; unlike poles attract. Snap a magnet in half and you get two smaller magnets, each with both poles.
Know it by heart
Say each one in your head, then tap to check.
Try it
Play — nothing here is marked
Magnets on iron filings
N SN faces N — like poles repel
Push the right-hand magnet in and let go — it gets shoved away. See the filings bend apart between the two norths.
Will a magnet pick it up?
0/0 right- Iron nail
- Aluminium can
- Steel paperclip
- Copper wire
- Nickel
- Gold ring
- Cobalt
- Plastic ruler
- Silver spoon
- Steel scissors
A full-marks answer
Give two ways to make an electromagnet stronger, and one advantage of an electromagnet over a permanent magnet.
3 marksBuilt one line at a time — say the next line before you reveal it
- Increase the current flowing through the coil.(first way)
Words to know
Tap a card to flip it
Step 9 · last bit
Ready? Prove it.
A round of ten. Score 8 or more and this step is done — then on to simple machines.