These two lesson presentations covers the OCR Gateway Physics 9-1 P2.3.1 material. • Number of forces needed to deform an object • Elastic and Plastic definitions • Hooke’s Law • Rearranging equations • Determining the gradient • Determining the spring constant • Experimental procedure • Exam style questions with solutions

This presentation covers OCR Gateway Physics 9-1 P2.3.4 Turning Forces Clockwise and anti-clockwise moments Equation for moments Rearranging equation Balancing moments Principle of moments

This presentation covers OCR Gateway Physics 9-1 P2.3.5 Simple Machines • Uses of simple machines • Simple machines as force multipliers • Mechanical advantage equation • Gears – ratios, speed, direction • Rearranging equations • Exam style questions with solutions • Student problems with answers

This presentation covers OCR Gateway Physics 9-1 P2.3.6 Hydraulic Systems • Uses of hydraulics • Pressure equation • Rearranging equation • Calculating pressure in liquids • Describing how force multiplies in hydraulic systems • Worked examples and student problems

This presentation covers OCR Gateway Physics 9-1 P5.1.1b Waves and their properties. Includes student activities and full worked answers. Amplitude Wavelength Frequency Time period Calculating frequency and equation Relationship between frequency and wavelength when speed is constant. Calculating time period from frequency with equations

This presentation covers OCR Gateway Physics 9-1 P6.1.4 Half life All presentations come with student activities and worked solutions. Definition of half-life Radioactive decays are random Finding half-life from a graph Constructing a half-life graph Finding the number of half-lives past using ratios

This presentation covers OCR Gateway Physics 9-1 P8.3.2 Our Solar System This PowerPoint is a whole lessons included with student activities and animated answers. Structure of the solar system Nuclear Fusion Evolution of large stars Evolution of Sun like stars Gravitational force and force from nuclear fusion

OCR AS level Physics: Archimedes’ Principle is a part of the Module 3: Forces and Motion Presentation come with worked examples, solutions and homeworks.

OCR AS level Physics: Elastic Potential Energy is a part of the Module 3: Materials Presentation come with worked examples, solutions and homeworks.

OCR AS level Physics: Polarisation is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.

OCR AS level Physics: Interference is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.

OCR AS level Physics: Stationary Waves in Air Columns is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.

OCR AS level Physics: Harmonics is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.

OCR AS level Physics: The Photoelectric Effect is a part of the Module 4: Electrons, Waves, and Photons. Full lesson PowerPoint with worked examples and homework with complete worked answers. Threshold frequency Producing photoelectrons Kinetic energy of photoelectrons Linking frequency and wavelength The electromagnetic spectrum, frequency and energy.

This PowerPoint presentation with worked examples and student activities covers: Topic 2.1 of Science Fundementals of the OCR Applied Science Spec. Types of mixtures to include solutions, colloids and suspensions Difference between colloids and suspensions in terms of particle size Uses of common colloids in nature and medicine Types of colloids to include aerosols, emulsions, foams, gels and sols Significance of colloids in nature and medicine Alloys as mixtures of metals The character and features of alloys Uses of common alloys to include amalgam, solder, bronze, titanium alloy

This PowerPoint presentation with worked examples and student questions covers: • Changes of state • The technique of simple distillation • Concentration of solute increasing in distillation • Jobs related to chemistry • Key word test Insoluble, Soluble, Solvent, Solute, Solution, Distillation, Filtration, and Crystallisation

This PowerPoint presentation with worked examples and student questions covers: • pH 0 - 14 scale with household examples • Definitions for acids, bases and alkali substances • Universal indicator and pH probes • Using equalities and inequalities

OCR Applied Science Level 3 - Module 21: Product Testing Techniques. 3.1 Titration techniques on consumer products • Acid-base titration (e.g. limescale removers, eco-disinfectants) • Precipitation titration (e.g. contact lens saline solution) • Redox titration, (e.g. bleach, tooth whitener; vitamin C tablets). • Complexometric titrations (e.g. Milk of Magnesia) Including explanation and activities on: Titration calculations Moles and molar mass Rearranging Equations State symbols Significant Figures Comparing Data