Attract or Repel Look at the list of

Attract or Repel Look at the list of objects below and decide whether they will be attracted or repelled by a magnet: • paperclip • cork • a rubber • a plastic pen • a drawing pin • an aluminium can • some iron fillings Use this Venn diagram to help you sort out your ideas. It will be attracted by the magnet I’m not sure It will not be attracted by the magnet

Label These Diagrams Attract or repel?

The Dancing Paperclip Task: Equipment: Make the paperclip dance across the table without touching it. Instructions: • some paperclips • a magnet Describe what you would do with this equipment to make the paperclip dance. • a table Challenge: Design a child’s game using this equipment.

True or False? 1) These magnets will attract: False. Two like poles repel. 2) These magnets will attract: True. Opposite poles attract. 3) Forces are measured in newts. False. Forces are measured in Newtons (N). 4) Plastic is not magnetic. True. Plastic is not magnetic. 5) If a car is moving along the road, the forces acting on the car are balanced. False. The forces are unbalanced. 6) Aluminium is magnetic. False. Aluminium is not magnetic 7) The force stopping us from floating into space is called gravity. True. The force stopping us from floating into space is called gravity.

Different Forces 1) Make a door open door person • Describe what you must do to make a door open. • Describe/show in a drawing which forces are acting on the door. 2) Make the car move toy car person road • Describe what you must do to make a car move. • Describe/show in a drawing which forces are acting on the car and the road.

Different Forces 3) Make the candle light candle matches matchbox • Describe what you must do to make the candle light. • Describe/show in a drawing which forces are acting on the wick, the match, and the matchbox. 4) Make the boat float boat lake • Describe what you must do to make the boat float. • Describe/show in a drawing which forces are acting on the boat and the water to stop the boat from sinking.

Friction This 1976 Porsche completed 5 laps of the racing track in a week. Photo courtesy of (Gillfoto@commons. wikimedia. org) - granted under creative commons licence – attribution Day Day Day 1: Sunny and bright 2: Raining 3: Foggy with misty, fine rain 4: Misty 5: Heavy rain On a sunny day, the Porsche travelled at an average speed of 175 km/h. Complete the table to show your predictions for the Porsche’s speed in the different weather conditions. Day Weather 2 Raining 3 Foggy and misty rain 4 Misty 5 Heavy rain Prediction Challenge: Why do you think cars have to stop much earlier when the road is very wet?