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8.3 Beyond Earth

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Question 18
F

A student heats a metal bar in a flame.

As the temperature of the bar increases, it glows dull red, then orange, then yellow-white.

Which statement explains this change in colour?

[1]
A

As it gets hotter, more of the radiation emitted is at shorter wavelengths

B

As it gets hotter, more of the radiation emitted is at longer wavelengths

C

As it gets hotter, it emits one single wavelength that keeps changing

D

As it gets hotter, it stops emitting any infrared radiation at all

Markscheme

8.3 Beyond Earth Questions

  1. GCSE
  2. /Physics
  3. /8.3 Beyond Earth

50 exam-style questions on OCR GCSE Physics 8.3 Beyond Earth, covering 8.3.1 Red-shift and the expanding universe, 8.3.2 Evidence for the Big Bang model, 8.3.3 Formation of the Sun and stellar equilibrium, 8.3.4 Radiation emitted by hot bodies, 8.3.5 The solar system and satellites, 8.3.6 Gravity and circular orbits, 8.3.7 Orbital radius and orbital speed, 8.3.8 Radiation balance and the temperature of the Earth, and 8.3.9 Seismic waves and exploring hidden structures. Each one has a worked solution and a mark scheme showing where the marks go.

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