Teachers' Portal  /  A-Level Physics 9702  /  Astronomy and cosmology
Topic plan · A-Level Physics 9702 · Topic 25

Astronomy and cosmology

From standard candles to Hubble's law. The most ambitious topic in the syllabus, asking students to measure the scale of the Universe itself.

Open the topic lab Notes PDF
Unit at a glance

3 lessons, 135 minutes of teaching

Lessons
3, each planned for 45 minutes
Worksheets
3 with answer keys
Quiz questions
0 multiple-choice, assignable in the app
Lab
Astronomy and cosmology
Scheme of work

The lessons in order

RefLesson packStructureWorksheetQuizLab tab
25.1Standard candles and the inverse square law
A star pours out a fixed power, its luminosity.
Connect-Extend-Challenge4 Q, 29 marks (topic)4 checkstab 1
25.2Stellar radii: Wien and Stefan-Boltzmann
A star glows like a hot body, and the colour of that glow betrays its temperature.
Anticipation / Reaction Guide4 Q, 30 marks (topic)4 checkstab 2
25.3Hubble's law and the Big Bang
Light from distant galaxies arrives stretched toward the red, and the further away a galaxy is, the faster it is fleeing.
Cooperative Concept Mapping4 Q, 32 marks (topic)4 checkstab 3

Each pack holds the plan, worksheet and quiz for its lesson. Teach the rows in order; the lab tabs match the student lessons.

Also for this topic

Topic resources