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8.3 Beyond Earth

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Question 24
H

A satellite is in a stable circular orbit around the Earth. The speed of the satellite is then reduced.

For the satellite to be in a stable circular orbit at the new, lower speed, what must happen to the radius of its orbit?

[1]
A

It must decrease, because gravity is stronger closer to the Earth

B

It must stay the same, because speed and radius are not linked

C

It must decrease, because a slower satellite needs less force

D

It must increase, because a weaker gravitational pull is needed

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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