We have covered the theory of work done so now it’s time to look at some simple machines that trade force against distance to make tasks easier than they would otherwise be. In this post we will look at levers and gears, which "magnify" forces by moving a smaller force through a larger distance. This … Continue reading Levers and Gears
Energy is not Power!
Suppose that two identical twins decide to go upstairs in their house: one twin runs up the stairs whereas the other twin walks up the stairs. Which twin transfers the greatest amount of energy? Almost everybody says the twin who runs transfers more energy because she goes faster. This is a common misconception. In fact, … Continue reading Energy is not Power!
Work Done and GPE
The basics of energy stores and transfers are covered in a separate post (click here to refresh your memory if necessary). We now need to think specifically about ways in which energy can be transferred by the action of forces. For the purposes of GCSE Physics, we will restrict our thoughts to mechanical forces but … Continue reading Work Done and GPE
Energy Stores and Transfers
Energy is the property of a system that enables it to do work. This is often stated bluntly as; “energy makes thing work”. There is a fundamental law in physics, which states that the total amount of energy in a system always remains constant. Energy cannot be created and it cannot be destroyed. Energy can, … Continue reading Energy Stores and Transfers
Velocity-time graphs
We have extended our knowledge of graphs of motion by looking at velocity-time graphs. If you require more information then please read p23 in your CGP Complete Revision and Practice book (GCSE Edexcel Phyics). It is now time for you to test your knowledge and understanding. This is a compulsory homework task that you must … Continue reading Velocity-time graphs
Distance-Time graphs
We have covered the theory of distance-time graphs in class. If you require more information then please read p22 in your CGP Complete Revision and Practice book. It is now time for you to test your knowledge and understanding. This is a compulsory homework task that you must complete before your next Physics lesson. The … Continue reading Distance-Time graphs
“Equation triangles”
There are about 30 equations that you need to be able to use in the GCSE Physics course. You are required to remember most of these equations as only a few are guaranteed to be included in the formula sheet for the examination. As it happens, the exam board has, so far, provided most of … Continue reading “Equation triangles”
Scalars and Vectors
You must know the definitions of a scalar and a vector. A scalar is a quantity that has magnitude only (it has no direction). Common examples include; temperature, speed, mass and distance. A vector is a quantity that has both magnitude and direction. Common examples include; forces, velocity, acceleration and electric current. There are a … Continue reading Scalars and Vectors
BBC Bitesize – the right content
BBC Bitesize has lots of content that can help with your revision but you need to ensure that you are looking at resources that are matched to the right specification (Edexcel 9-1). To make life easier for you, the direct link to the right content is given below. Click here for the complete index of … Continue reading BBC Bitesize – the right content
Y10 end-of-year test advice
The end-of-year test for Y10 covers a variety of areas from the first four topics studied; Working Scientifically, Motion and Forces, Energy, and Waves and the Electromagnetic Spectrum. There will be no questions about the Radioactivity or Astronomy topics. You are very strongly advised to revise the following areas in particular detail. Content Application of … Continue reading Y10 end-of-year test advice
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