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1.1 Units and quantities

1.1 Units and quantities

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The average distance between Ceres and the Sun is 2.8 AU2.8\text{ AU}2.8 AU.

1 AU1\text{ AU}1 AU is the average distance between the Earth and the Sun.

The intensity of the Sun's radiation reaching the Earth is 1360 W/m2.

1 W=1 J/s1\text{ W} = 1\text{ J/s}1 W=1 J/s

The intensity of the Sun's radiation at a distance, ddd, from the Sun is given by the equation:

intensity=Kd2 \text{intensity} = \frac{K}{d^2} intensity=d2K​

where d d\,d is measured in astronomical units (AU\text{AU}AU).

State the unit of KKK.

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Markscheme

1.1 Units and quantities Questions

  1. GCSE
  2. /Physics
  3. /1.1 Units and quantities

18 exam-style questions on Edexcel GCSE Physics 1.1 Units and quantities, covering 1.1.2 Unit prefixes, conversions, significant figures and standard form. Each one has a worked solution and a mark scheme showing where the marks go.

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