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Edexcel IGCSE Physics 8.3 Gravitational field strength

Practise using data and comparisons to explain why g differs between Earth, the Moon and planets, including effects of mass, size and density.

Syllabus
First assessment 2019
Course
Physics 4PH1

Exam points

  • compare planet data to test whether g times diameter squared is constant
  • explain lower g on the Moon or Mars using mass, density or size
  • plot or interpret a bar chart of gravitational field strength in N kg^-1

8.3 Gravitational field strength question 1

[Maximum number: 1]

This question is about astrophysics.

Which statement explains why the gravitational field strength on the Moon is less than the gravitational field strength on Earth?

A

the Moon is further away from the Sun than the Earth

B

the Moon has less atmosphere than the Earth

C

the Moon has less mass than the Earth

D

the Moon has greater density than the Earth

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