Here are some free videos and questions with worked solutions for students and teachers of GCSE Physics, GCSE Science, and IGCSE Physics. You are free to use these resources for your learning or teaching.
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How do we calculate acceleration? In this video I explain how to calculate acceleration using the change in velocity and time. We also look at how to calculate the distance travelled.
How do we interpret velocity-time graphs? How do we find acceleration and the total distance travelled? Watch the video to find out.
How do we use distance-time graphs? How do we find the speed or velocity from the graph? This video will help you answer these questions.
What is the difference between a vector and a scalar quantity? What are variables and what is magnitude? This video answers these questions.
How can you find density? I look at both how to calculate density and the practical method of finding mass and volume.
What is momentum and how do we calculate it? In this video I explain the conservation of momentum and show example calculations.
What is efficiency and how do we calculate it? In this video I explain what efficiency is and look at some example calculations.
When energy is transferred, work is done. Forces do work. In this video I look at work done and power.
What is meant by the terms wavelength, frequency, period, amplitude, longitudinal and transverse? I also look at the wave speed equation.
In this video I take a look at internal energy, specific heat capacity, and specific latent heat. I also go through a 6 mark style calculation.
Using the kinetic energy, gravitational potential energy, and elastic potential energy equations can be tricky. Here is a video with examples that walk you through these calculations.
The UK mains is 230V and domestic plugs are protected by fuses. The earth wire is also an important safety feature for many appliances. In this video we look at how these things work.
Here is a quick video demonstrating how to wire a plug.
Do you know how to balance the radioactive decay equations for alpha and beta decay?
Visible light is part of the electromagnetic spectrum but did you know that there are lots of other waves, like light, that you can't see?
Many people get confused by the terms mass and weight. There is an important difference between them.
In this video I take a look at the equations tha involve charge, current, potential difference, resistance and power.
Scalar properties only have a magnitude (a size). Vector properties have magnitude and direction. Forces are vectors and this video explains how to put different force vectors together.
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