object’s gravitational potential energy. Exceeding Explaining: Modelling force fields Describe how gravitational effects were Look at how gravitational and used to estimate the mass of the magnetic fields can be represented by Earth. lines showing the direction a Describe the domain model and use it mass/north pole will move. to explain various phenomena connected with magnets. Plenary: Thinking about force fields Use data to derive the formula relating Consider All Possibilities: An object is the force of gravity to masses and the not attracted to a magnet. (Possible distance between them. answers: the object is not made from a magnetic material; the object is too far away from the magnet; the magnetic field of the magnet is too weak; the object is another magnet and like poles are facing.) Lesson 9Jb: Static electricity Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Tricks with static Explaining: Van Resources n/a Demonstrate Recall how objects can be given a Rub a polythene or acetate rod with a de Graaff from 9Jb rubbing a charge of static electricity, and duster until it has sufficient charge to generator Exploring polythene or describe some of its effects. pick up small pieces of tissue paper. demonstrations 2 Science. acetate rod with Describe the kinds of materials that Ask students to name the force that Ask students to a duster until it can and cannot be given a charge of is lifting the paper. Ask students to explain has sufficient static electricity. suggest similarities and the charge to pick Recall the two types of charges and differences between this as they up small pieces their effects on each other. demonstration and using a magnet to happen and then of tissue paper. Use ideas about attraction and pick up paperclips. choose one repulsion to explain electrostatic demonstration to Students phenomena involving repulsion Exploring: Attraction and repulsion – describe and investigate the between like charges. charges explain on an A4 forces of Securing Students investigate the forces of poster. attraction Explain why a conducting object attraction and repulsion between like and repulsion cannot be given a charge of static and unlike charges, using acetate and between like electricity. polythene rods. and unlike
object’s gravitational potential energy. Exceeding Describe how gravitational effects were used to estimate the mass of the Earth. Describe the domain model and use it to explain various phenomena connected with magnets. Use data to derive the formula relating the force of gravity to masses and the distance between them. Explaining: Modelling force fields Look at how gravitational and magnetic fields can be represented by lines showing the direction a mass/north pole will move. Plenary: Thinking about force fields Consider All Possibilities: An object is not attracted to a magnet. (Possible answers: the object is not made from a magnetic material; the object is too far away from the magnet; the magnetic field of the magnet is too weak; the object is another magnet and like poles are facing.) Lesson 9Jb: Static electricity Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Recall how objects can be given a charge of static electricity, and describe some of its effects. Describe the kinds of materials that can and cannot be given a charge of static electricity. Recall the two types of charges and their effects on each other. Use ideas about attraction and repulsion to explain electrostatic phenomena involving repulsion between like charges. Securing Explain why a conducting object cannot be given a charge of static electricity. Starter: Tricks with static Rub a polythene or acetate rod with a duster until it has sufficient charge to pick up small pieces of tissue paper. Ask students to name the force that is lifting the paper. Ask students to suggest similarities and differences between this demonstration and using a magnet to pick up paperclips. Exploring: Attraction and repulsion – charges Students investigate the forces of attraction and repulsion between like and unlike charges, using acetate and polythene rods. Explaining: Van de Graaff generator demonstrations 2 Ask students to explain the as they happen and then choose one demonstration to describe and explain on an A4 poster. Resources from 9Jb Exploring Science. n/a Demonstrate rubbing a polythene or acetate rod with a duster until it has sufficient charge to pick up small pieces of tissue paper. Students investigate the forces of attraction and repulsion between like and unlike
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