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IB Physics HL B.2.3 Albedo Question Bank

Practise IB Physics HL B.2.3 by analysing albedo, atmospheric scattering and snow–ice feedback in planetary climate models.

Syllabus
First assessment 2025
Course
Physics HL
Level
HL

Exam points

  • Compare snow, ice, ocean and desert albedos to explain feedback from melting or changing surface cover.
  • Apply albedo to atmospheric scattering, climate diagrams and energy available for melting ice.

B.2.3—Albedo question 1

[Maximum number: 1]

A planet has an albedo of 0.30 . A simplified energy balance for the planet is shown.

Figure for Question B.2.3—Albedo question 1 — IB Physics HL

What is the intensity radiated by the surface of the planet?

A

70Wm−270 \mathrm{Wm}^{-2}

B

90Wm−290 \mathrm{Wm}^{-2}

C

100Wm−2100 \mathrm{Wm}^{-2}

D

130Wm−2130 \mathrm{Wm}^{-2}

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