Earth initially has a steady average temperature. An increase in greenhouse gases reduces outgoing power to space at this temperature. Absorbed solar power remains constant. Which describes the subsequent change?
Earth cools until outgoing power falls to equal absorbed solar power.
Earth warms until outgoing power remains below absorbed solar power.
Earth cools until outgoing power remains above absorbed solar power.
Earth warms until outgoing power rises to equal absorbed solar power.
96 exam-style questions on Edexcel GCSE Physics 5.3 Black body radiation, covering 5.3.1 Emission of radiation and temperature, 5.3.2 Radiation balance and constant temperature, and 5.3.3 The temperature of the Earth. Each one has a worked solution and a mark scheme showing where the marks go.