Unit 3E: Magnets and Springs

Unit 3E: Magnets and Springs

Unit 3E: Magnets and Springs

Magnets and Springs

Unit 3E: Vocabulary-

Unit 3E: Vocabulary

Useful Words

Magnetic

Non Magnetic

Attraction /

Attract

Repulsion / Repel

Bar Magnet

Horseshoe Magnet

Ring Magnet

Iron

Aluminium

Poles

A material that will be attracted to a magnetA material that will not be attracted to a magnetA FORCE pulling two objects together

A FORCE pushing two objects apart

A straight bar-shaped magnet

A horseshoe shaped magnet, the two ends are the poles

A doughnut shaped magnet, the two faces are the poles

A metal which is magnetic

A metal which is non-magnetic

The two ends of a magnet

Unit 3E: Forces Between Magnets: L.O. 1, 2, 3 : NC: 4.2a

Unit 3E: Forces Between Magnets

Opposite poles attract each other

Like poles repel each other

Unit 3E: Magnetic or Non Magnetic? : L.O. 4, 5, 6, 7 : NC. 4.2a

Unit 3E: Magnetic or Non Magnetic?

Which objects are magnetic?

Magnetic Non Magnetic

Tennis ball

Screw

Shoe

Marker Pen

Keys

Scissors

Sweets

Unit 3E: Uses of Magnets: L.O. 8

Unit 3E: Uses of Magnets

Compasses

Locking Doors

Fridge Magnets

Speakers

Hospitals (MRI Scan)

Scrap yards (Cranes)

What are magnets used for?

Unit 3E: Which is the strongest magnet? : L.O. 9, 10 : NC. 1.2d, 1.2e

Unit 3E: Which is the strongest magnet?

1. How can we find out which magnet is the strongest?

2. What equipment will we need?

3. How will we know which magnet is strongest?

4. How will we record our results?

Unit 3E: Which is the strongest magnet: Results table : L.O. 11, 12 : NC. 1.2h, j.

Unit 3E: Which is the strongest magnet: Results table.

Results Table

Magnet Number of paperclips picked up

Magnet A

Magnet B

Magnet C

Magnet D

Unit 3E: Uses of Springs: L.O. 13

Unit 3E: Uses of Springs

Trampolines

Closing Doors

Playground Rides

Staplers

Clockwork

Car/bikesuspension

What are springs used for?

Unit 3E: How Springs Work: L.O. 14, 15 : NC. 4.2 d

Unit 3E: How Springs Work

Unit 3E: How Springs Work: L.O. 16 : NC. 4.2 d, e, 1.2 d, e, f, g, h, j, l

Unit 3E: Investigating Elastic Bands

What do you think will happen if the catapult is pulled back further?

Test what happens when the catapult is pulled back by different amounts.

Unit 3E: Investigating Elastic Bands: Results: L.O. 17,18,19 : NC. 4.2 d,e, 1.2 l

Unit 3E: Investigating Elastic Bands: Results

Distance catapult pulled back Distance car travelled

2 cm

4 cm

6 cm

8 cm

10 cm

The car travelled furthest when we pulled it back _______ cm

This tells us that when the car is pulled back further, the force from the elastic bands is __________________

Can you explain why the results showed this?

Unit 3E: Summary

Unit 3E: Summary

Magnets

Have 2 ends

called polesM

agne

tic

and

non-

mag

netic

mat

eria

ls

Differe

nt

types

Uses of

magnets

MRI scanners

recycling

fridge doors

stro

ng

weak

bar

ring

horseshoe

bar

ring

horseshoe

oppositeattract

likerepel

non-magnetic

Non-metals

rubber

aluminium

wood

magnetic

speakers

nickel

steel

iron

Unit 3E: Summary

Unit 3E: Summary

Springs

Uses ofsprings

Playground rides

staplers

clockwork

trampolinesA

pp

ly a

forc

estretch compress big force

small force

compressesmore

compressesless

big force

small force

stretchesmore

stretchesless