Can anyone help with ds2's science homework (magnets)?

[DumbledoresGirl]

I would normally ask dh but the homework has to be done by tonight and dh is always late home from work.

Ds2 has been asked to find evidence of magnets around him. List things in the home and "around you" which use magnets and say why they use magnets.

So far, we have only thought of magnets in handbag clips and on cupboard doors which are there to ensure the flap/door stays shut.

Do fridges and freezer doors also have magnets in them? Or is that some sort of suction thing at work?

Any other ideas for where we find magnets and what they are for? I am hopeless at this sort of thing and ds2 is at a loss.

Thanks.

I think some fridge and freezer doors have magnets.

Better, though: speakers have magnets in them. And so do motors, designed to turn electricity into kinetic energy. (How old is DS2?) Generators have magnets for the same purpose, but in reverse.

From Googled site

"The most important use of magnets in the home, is the electric motors. All electric motors use electromagnets. These motors run refrigerators, vacuum cleaners, washingmachines, compact disc players, blenders, hedge trimmers, drills, race cars etc... ...
Audiotape and videotape players have electromagnets called heads that record and read information on tapes coverd with tiny magnetic particles.

Magnets in speakers transform the signal into a sound by making the speakers vibrate. An electromagnet called a deflection yoke in TV picture tubes helps form images on a screen".

Some cupboard doors have magnets and our shower doors also have a magnetic strip to make sure they close properly...

Cat doors?

L plate on cars?

and dont forget simple things like memo boards !

Brio (type) trains?

What about for picking up pins, using in paperclip holder ? at how much it is !

Thanks for ideas. The Brio train one we should have got as we have a boxful of the stuff!

Ds2 is 9 but very bright. Even so, I am not sure he gets the electromagnetic thing (or is that just me whose mind is boggling at the concept?!)

Some screwdrivers are magnetised for ease of use. Electric can openers have a magnet to hold the lid. Magnetic jewellery. JML are advertising magnetic necklaces on the telly at the moment.

Umm... Sorry, can't think of any more!

what about fridge magnets - the you that you stick onto the fridge door to hold notes etc?

we have the Top Gear cool wall on ours

Phones have magnets

so do speakers

I think electromagnets is more ks3. Prob jsut enough for him to know there are magnets in them at this age.

Fridge magnets. Recording tape, video tape, clasps and clips, door bells (electomagnets), very old television, floppy discs, computers