logo

Learning objective

Recognize that the strength of a planet's gravitational field (a) at its surface is determined by the planet's mass and (b) decreases with increasing distance from the planet.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE PhysicsSpace physicsCore content

Study support

Understand this objective

Quick explanation

Recognize that the strength of a planet's gravitational field (a) at its surface is determined by the planet's mass and (b) decreases with increasing distance from the planet

  • This point belongs to The Solar System, especially The Solar System outcomes.
  • You need to be able to recognize that the strength of a planet's gravitational field (a) at its surface is determined by the planet's mass and (b) decreases with increasing distance from the planet.
  • The key ideas to know are Know and Understand.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

KnowUnderstand

Why it matters

This objective helps connect The Solar System outcomes to exam-style questions, flashcards, and revision notes for The Solar System.

Revision tools

Choose how to practise

Back to topic hub
Flashcards10 linked cards

Flashcard 1 of 10

Press Space to flip, arrows to move
Practice Questions7 linked questions

Question 1 of 7

Choose an answer, get feedback, then move sideways through the set.

0 of 5 attempted

Paper 3 structured question: The Solar System

Paper 3Theory (Core)1 marks

Description

Gravitational Field Strength Comparison

Earth has a mass of approximately 5.97 x 10^24 kg and Mars has a mass of about 6.42 x 10^23 kg. The radius of Earth is about 6,371 km and Mars is about 3,389.5 km.

  1. a

    State the relationship between a planet's mass and its gravitational field strength.

    Aim for approximately 1 distinct marking point.

    [1]
Revision notestopic notes

Open the full topic revision notes when you are ready to review this objective in context.

Open revision notes

Related learning objectives

Revision hubs

Move back to a broader study route