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VICPhysicsQuick questions
Unit 1: What ideas explain the physical world?
Quick questions on Climate and the greenhouse effect (VCE Physics Unit 1)
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is water vapour feedback?Show answer
Warmer air holds more water vapour, which is itself a greenhouse gas, amplifying warming.
What is ice-albedo feedback?Show answer
Melting sea ice exposes darker ocean, which absorbs more sunlight, accelerating warming.
What is cloud feedback?Show answer
Different cloud types either warm or cool.
What is q1?Show answer
Define radiative forcing and state the approximate present-day anthropogenic value in W m. [2 marks]
What is q2?Show answer
A planet of albedo orbits a star delivering W m of irradiance at the top of its atmosphere. Calculate the no-atmosphere equilibrium temperature. [4 marks]
What is q3?Show answer
Refer to Loy Yang A. (a) Outline two ways in which the combustion of brown coal contributes to the enhanced greenhouse effect. (b) Calculate the energy radiated per square metre per second by a surface at K.
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