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
Balancing Nuclear Equations
An easy way to pick up marks in the GCSE Physics exam is by balancing nuclear equations. To do this, you need to apply the law of the conservation of mass, which says the total mass before a nuclear change takes place is equal to the total mass after the change has occurred. This is … Continue reading Balancing Nuclear Equations
Nuclear Fission Processes
Nuclear fission is the process whereby a nucleus is split into two smaller nuclei. Fission happens when a nucleus absorbs an extra neutron and becomes highly unstable, instantly splitting apart. The starting nucleus is known as the 'parent' and the split fragments are known as 'daughter' nuclei. The parent nucleus does not split exactly in … Continue reading Nuclear Fission Processes
Moderators and Control Rods
If nuclear fission processes are used to generate electricity in a nuclear power station, it is absolutely vital to manage the neutrons that are released during nuclear fission so that their number remains constant and energy is released at a constant rate. This management is achieved using control rods and a moderator, which serve two … Continue reading Moderators and Control Rods
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