Unit 3 E Magnets and Springs Unit 3

Unit 3 E: Magnets and Springs

Unit 3 E: Magnets and Springs

Unit 3 E: Vocabulary Useful Words Magnetic A material that will be attracted to a magnet Non Magnetic A material that will not be attracted to a magnet Attraction / Attract A FORCE pulling two objects together Repulsion / Repel A FORCE pushing two objects apart Bar Magnet A straight bar-shaped magnet Horseshoe Magnet A horseshoe shaped magnet, the two ends are the poles Ring Magnet A doughnut shaped magnet, the two faces are the poles Iron A metal which is magnetic Aluminium A metal which is non-magnetic Poles The two ends of a magnet Unit 3 E: Vocabulary-

Unit 3 E: Forces Between Magnets Opposite Like poles attract repel each other Unit 3 E: Forces Between Magnets: L. O. 1, 2, 3 : NC: 4. 2 a

Unit 3 E: Magnetic or Non Magnetic? Which objects are magnetic? Magnetic Tennis ball Screw Shoe Marker Pen Keys Scissors Sweets Unit 3 E: Magnetic or Non Magnetic? : L. O. 4, 5, 6, 7 : NC. 4. 2 a Non Magnetic

Unit 3 E: Uses of Magnets Scrap yards (Cranes) Hospitals (MRI Scan) Compasses What are magnets used for? Speakers Locking Doors Fridge Magnets Unit 3 E: Uses of Magnets: L. O. 8

Unit 3 E: 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 3 E: Which is the strongest magnet? : L. O. 9, 10 : NC. 1. 2 d, 1. 2 e

Unit 3 E: Which is the strongest magnet: Results table. Results Table Magnet Number of paperclips picked up Magnet A Magnet B Magnet C Magnet D Unit 3 E: Which is the strongest magnet: Results table : L. O. 11, 12 : NC. 1. 2 h, j.

Unit 3 E: Uses of Springs Car/bike suspension Clockwork Trampolines What are springs used for? Staplers Closing Doors Playground Rides Unit 3 E: Uses of Springs: L. O. 13

Unit 3 E: How Springs Work: L. O. 14, 15 : NC. 4. 2 d

Unit 3 E: 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 3 E: How Springs Work: L. O. 16 : NC. 4. 2 d, e, 1. 2 d, e, f, g, h, j, l

Unit 3 E: 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 3 E: Investigating Elastic Bands: Results: L. O. 17, 18, 19 : NC. 4. 2 d, e, 1. 2 l

Unit 3 E: Summary bar ring ng opposite attract st ro horseshoe Ha v cal e 2 e led n pol ds es steel nickel magne tic rubber aluminium non-ma gnetic wood Non-metals Unit 3 E: Summary of s ts se e U agn m iron bar we ring ak horseshoe Magnets M no agn n et m -ma ic at g an er ne d ia tic ls like repel t en r e ff pes i D ty recyclin g MRI sca nner s fridge d oors speaker s

Unit 3 E: Summary Springs Apply a force Playground rides stretches more stretches less staplers Uses of springs big force stretch small force trampolines clockwork co mp re ss big force small for ce Unit 3 E: Summary compresses more compresses less