Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.14 - Know that light waves are transverse waves and that they can be reflected and refracted. Specification Point 3.15 - Use the law of reflection. Specification Point 3.16 - Draw ray diagrams to illustrate reflection and refraction. Specification Point 3.17 - Practical: investigate the refraction of light, using rectangular blocks, semi-circular blocks and triangular prisms. Specification Point 3.18 - Know and use the relationship between refractive index, angle of incidence and angle of refraction. Specification Point 3.19 - Practical: investigate the refractive index of glass, using a glass block. Specification Point 3.20 - Describe the role of total internal reflection in transmitting information along optical fibres and in prisms. Specification Point 3.21 - Explain the meaning of critical angle c. Specification Point 3.22 - Know and use the relationship between critical angle and refractive index. Specification Point 3.23 - Know that sound waves are longitudinal waves which can be reflected and refracted. Complete set of Chapter 3 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 16 - Reflection and Refraction. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.14 - Know that light waves are transverse waves and that they can be reflected and refracted. Specification Point 3.15 - Use the law of reflection. Specification Point 3.16 - Draw ray diagrams to illustrate reflection and refraction. Specification Point 3.17 - Practical: investigate the refraction of light, using rectangular blocks, semi-circular blocks and triangular prisms. Specification Point 3.18 - Know and use the relationship between refractive index, angle of incidence and angle of refraction. Specification Point 3.19 - Practical: investigate the refractive index of glass, using a glass block. Specification Point 3.20 - Describe the role of total internal reflection in transmitting information along optical fibres and in prisms. Specification Point 3.21 - Explain the meaning of critical angle c. Specification Point 3.22 - Know and use the relationship between critical angle and refractive index. Specification Point 3.23 - Know that sound waves are longitudinal waves which can be reflected and refracted. Complete set of Chapter 3 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.7 - Use the relationship between frequency and wavelength in different contexts including sound waves and electromagnetic waves. Specification Point 3.8 - Explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer, and that this is known as the Doppler effect. Specification Point 3.10 - Know that light is part of a continuous electromagnetic spectrum that includes radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray radiations and that all these waves travel at the same speed in free space. Specification Point 3.11 - Know the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency, including the colours of the visible spectrum. Specification Point 3.12 - Explain some of the uses of electromagnetic radiations. Specification Point 3.13 - Explain the detrimental effects of excessive exposure of the human body to electromagnetic waves and describe simple protective measures against the risks. Complete set of Chapter 3 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 15 - Electromagnetic Waves. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.7 - Use the relationship between frequency and wavelength in different contexts including sound waves and electromagnetic waves. Specification Point 3.8 - Explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer, and that this is known as the Doppler effect. Specification Point 3.10 - Know that light is part of a continuous electromagnetic spectrum that includes radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray radiations and that all these waves travel at the same speed in free space. Specification Point 3.11 - Know the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency, including the colours of the visible spectrum. Specification Point 3.12 - Explain some of the uses of electromagnetic radiations. Specification Point 3.13 - Explain the detrimental effects of excessive exposure of the human body to electromagnetic waves and describe simple protective measures against the risks. Complete set of Chapter 3 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 3.1 - Use the following units: degree (°), hertz (Hz), metre (m), metre/second (m/s) and second (s). Specification Point 3.2 - Explain the difference between longitudinal and transverse waves. Specification Point 3.3 - Know the definitions of amplitude, wavefront, frequency, wavelength and period of a waves. Specification Point 3.4 - Know that waves transfer energy and information without transferring matter. Specification Point 3.5 - Know and use the relationship between the speed, frequency and wavelength of a wave. Specification Point 3.6 - Use the relationship between frequency and time period. Complete set of Chapter 3 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 14 - Waves. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.1 - Use the following units: degree (°), hertz (Hz), metre (m), metre/second (m/s) and second (s). Specification Point 3.2 - Explain the difference between longitudinal and transverse waves. Specification Point 3.3 - Know the definitions of amplitude, wavefront, frequency, wavelength and period of a waves. Specification Point 3.4 - Know that waves transfer energy and information without transferring matter. Specification Point 3.5 - Know and use the relationship between the speed, frequency and wavelength of a wave. Specification Point 3.6 - Use the relationship between frequency and time period. Complete set of Chapter 3 Worksheets are available.

Complete set of companion PDF worksheets for Edexcel IGCSE Physics (4PH1) Chapter 2 - Electricity. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Five worksheets included: 9 - Mains Electricity 10 - Power, Current and Voltage 11 - Circuits Part 1 12 - Circuits Part 2 13 - Static Electricity

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.22P - Identify common materials which are electrical conductors or insulators, including metals and plastics. Specification Point 2.23P - Practical: investigate how insulating materials can be charged by friction. Specification Point 2.24P - Explain how positive and negative electrostatic charges are produced on materials by the loss and gain of electrons. Specification Point 2.25P - Know that there are forces of attraction between unlike charges and forces of repulsion between like charges. Specification Point 2.26P - Explain electrostatic phenomena in terms of the movement of electrons. Specification Point 2.27P - Explain the potential dangers of electrostatic charges. Specification Point 2.28P - Explain some uses of electrostatic charges. Complete set of Chapter 2 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 13 - Static Electricity. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.22P - Identify common materials which are electrical conductors or insulators, including metals and plastics. Specification Point 2.23P - Practical: investigate how insulating materials can be charged by friction. Specification Point 2.24P - Explain how positive and negative electrostatic charges are produced on materials by the loss and gain of electrons. Specification Point 2.25P - Know that there are forces of attraction between unlike charges and forces of repulsion between like charges. Specification Point 2.26P - Explain electrostatic phenomena in terms of the movement of electrons. Specification Point 2.27P - Explain the potential dangers of electrostatic charges. Specification Point 2.28P - Explain some uses of electrostatic charges. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.15 - Know and use the relationship between charge, current and time. Specification Point 2.16 - Know that electric current in solid metallic conductors is a flow of negatively charged electrons. Specification Point 2.17 - Understand why current is conserved at a junction in a circuit. Specification Point 2.18 - Know that the voltage across two components connected in parallel is the same. Specification Point 2.19 - Calculate the currents, voltages and resistances of two resistive components connected in a series circuit. Specification Point 2.20 - Know that voltage is the energy transferred per unit charge passed and that the volt is a joule per coulomb. Specification Point 2.21 - Know and use the relationship between energy transferred, charge and voltage. Complete set of Chapter 2 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 12 - Circuits Part 2. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.15 - Know and use the relationship between charge, current and time. Specification Point 2.16 - Know that electric current in solid metallic conductors is a flow of negatively charged electrons. Specification Point 2.17 - Understand why current is conserved at a junction in a circuit. Specification Point 2.18 - Know that the voltage across two components connected in parallel is the same. Specification Point 2.19 - Calculate the currents, voltages and resistances of two resistive components connected in a series circuit. Specification Point 2.20 - Know that voltage is the energy transferred per unit charge passed and that the volt is a joule per coulomb. Specification Point 2.21 - Know and use the relationship between energy transferred, charge and voltage. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.7 - Explain why a series or parallel circuit is more appropriate for particular applications, including domestic lighting. Specification Point 2.8 - Understand how the current in a series circuit depends on the applied voltage and the number and nature of other components. Specification Point 2.9 - Describe how current varies with voltage in wires, resistors, metal filament lamps and diodes, and how to investigate this experimentally. Specification Point 2.10 - Describe the qualitative effect of changing resistance on the current in a circuit. Specification Point 2.11 - Describe the qualitative variation of resistance of light-dependent resistors (LDRs) with illumination and thermistors with temperature. Specification Point 2.12 - Know that lamps and LEDs can be used to indicate the presence of a current in a circuit. Specification Point 2.13 - Know and use the relationship between voltage, current and resistance. Complete set of Chapter 2 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 11 - Circuits Part 1. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.7 - Explain why a series or parallel circuit is more appropriate for particular applications, including domestic lighting. Specification Point 2.8 - Understand how the current in a series circuit depends on the applied voltage and the number and nature of other components. Specification Point 2.9 - Describe how current varies with voltage in wires, resistors, metal filament lamps and diodes, and how to investigate this experimentally. Specification Point 2.10 - Describe the qualitative effect of changing resistance on the current in a circuit. Specification Point 2.11 - Describe the qualitative variation of resistance of light-dependent resistors (LDRs) with illumination and thermistors with temperature. Specification Point 2.12 - Know that lamps and LEDs can be used to indicate the presence of a current in a circuit. Specification Point 2.13 - Know and use the relationship between voltage, current and resistance. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.4 - Know and use the relationship between power, current and voltage and apply the relationship to the selection of appropriate fuses. Specification Point 2.5 - Use the relationship between energy transferred, current, voltage and time. Specification Point 2.6 - Know the difference between mains electricity being alternating current (A.C.) and direct current (D.C.) being supplied by a cell or battery. Complete set of Chapter 2 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 10 - Power, Current and Voltage. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.4 - Know and use the relationship between power, current and voltage and apply the relationship to the selection of appropriate fuses. Specification Point 2.5 - Use the relationship between energy transferred, current, voltage and time. Specification Point 2.6 - Know the difference between mains electricity being alternating current (A.C.) and direct current (D.C.) being supplied by a cell or battery. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.1 - Use the following units: ampere, coulomb, joule , ohm, second, volt and watt. Specification Point 2.2 - Understand how the use of insulation, double insulation, earthing, fuses and circuit breakers protects the device or user in a range of domestic appliances. Specification Point 2.3 - Understand why a current in a resistor results in the electrical transfer of energy and an increase in temperature, and how this can be used in a variety of domestic contexts. Specification Point 2.14 - Know that current is the rate of flow of charge. Complete set of Chapter 2 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 9 - Mains Electricity. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.1 - Use the following units: ampere, coulomb, joule , ohm, second, volt and watt. Specification Point 2.2 - Understand how the use of insulation, double insulation, earthing, fuses and circuit breakers protects the device or user in a range of domestic appliances. Specification Point 2.3 - Understand why a current in a resistor results in the electrical transfer of energy and an increase in temperature, and how this can be used in a variety of domestic contexts. Specification Point 2.14 - Know that current is the rate of flow of charge. Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.30P - Know and use the relationship between the moment of a force and its perpendicular distance from the pivot. Specification Point 1.31P - Know that the weight of a body acts through its centre of gravity. Specification Point 1.32P - Use the principle of moments for a simple system of parallel forces acting in one plane. Specification Point 1.33P - Understand how the upward forces on a light beam, supported at its ends, vary with the position of a heavy object placed on the beam. Complete set of Chapter 1 Lessons are available.