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IB Physics SL B 2 3 Albedo Questions

Practise IB Physics SL B.2.3 by calculating albedo from reflected and incident radiation and applying it to planetary energy-balance problems.

Syllabus
First assessment 2025
Course
Physics SL
Level
SL

Exam points

  • Construct a free-body diagram that isolates the chosen body and labels every external force with correct direction and point of action.
  • Use a complete free-body diagram to resolve forces and determine the resultant or equilibrium condition from mark-scheme evidence.

IB Physics SL B 2 3 Albedo Questions question 1

[Maximum number: 1]

The Moon has no atmosphere and orbits the Earth. The diagram shows the Moon with rays of light from the Sun that are incident at 90∘90^{\circ} to the axis of rotation of the Moon.

Figure for Question IB Physics SL B 2 3 Albedo Questions question 1 — IB Physics SL

The albedo of the Earth's atmosphere is 0.28 . Outline why the maximum temperature of a black body on the Earth when the Sun is overhead is less than that at point A on the Moon.

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