Radioactivity and Astrophysics

4PH1 Topics 7-8. Mark-scheme Q&A on radioactivity, half-life, fission, fusion, stellar evolution, Big Bang and red-shift. Spec-complete, Paper 1+2 tagged.

Full description:
This 54-slide interactive revision deck covers the full content of Topics 7 and 8 of the Pearson Edexcel International GCSE Physics (4PH1) specification.

Sections covered:

1. Atomic Structure and Isotopes (spec 7.1-7.3) - PAPER 1
2. Types of Ionising Radiation (spec 7.4-7.6) - PAPER 1
3. Nuclear Equations and Decay (spec 7.7-7.8) - PAPER 1
4. Half-Life and Activity (spec 7.9-7.13) - PAPER 1
5. Uses and Dangers of Radiation (spec 7.14-7.16) - PAPER 1
6. Nuclear Fission and Fusion (spec 7.17-7.26) - PAPER 1
7. Astrophysics: Motion in the Universe (spec 8.1-8.6) - PAPER 1
8. Stellar Evolution and Cosmology (spec 8.7-8.18P) - PAPER 2 §

Every section contains: topic divider, question slides, mark-scheme-standard answer slides, and a Red-Amber-Green checkpoint.

The deck also includes:

• Command word trainer (physics-specific examples)
• Named practicals summary (penetration powers of radiation, investigation with Geiger counter)
• 8 examiner watch-outs (nuclear notation errors, half-life calculation mistakes, contamination vs irradiation confusion)
• Gap analysis table

Nuclear equations covered and checked: alpha decay (Ra-226, Rn-222), beta-minus decay (I-131), nuclear notation, chain reactions. All mass numbers and atomic numbers verified to balance.

Calculations covered: half-life (numerical and graphical methods), activity in Bq, orbital speed (v = 2pir/T), red-shift equation (delta-lambda/lambda = v/c).

Format: Microsoft PowerPoint (.pptx). 16:9 widescreen. Advance slide to reveal answers.

Price: £4.50

Tags: IGCSE Physics, Edexcel Physics, 4PH1, radioactivity, half-life, nuclear fission, nuclear fusion, astrophysics, red-shift, Big Bang, stellar evolution, revision