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Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit

Astrophysics

156 practice questions

Start practising (156 questions)

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Practice questions

41–50 of 156

  1. Question 41

    3 marks · Normal

    The table below shows the average distance of two moons from Saturn and the time each takes to orbit Saturn once:

    Moons of Saturn
    MoonAverage distance from Saturn (km)Orbital period (days)
    Mimas186,0000.94
    Titan1,221,90015.95
    Answer and see the solution →

  2. Question 42

    2 marks · Normal

    Saturn has many moons, all held in orbit by gravity. State two factors on which the size of the gravitational force between Saturn and one of its moons depends.

    Answer and see the solution →

  3. Question 43

    4 marks · Normal

    The planet Neptune is much farther from the Sun than Earth.

    (a)

    State how the gravitational force between Neptune and the Sun compares with that between the Earth and the Sun.

    [1 mark]
    (b)

    Explain how this difference in gravitational force affects Neptune’s orbit compared to Earth’s.

    [3 marks]
    Answer and see the solution →

  4. Question 44

    1 mark · Normal

    Which of the following is NOT an artificial satellite?

    1. A.A weather satellite orbiting the Earth
    2. B.The Moon orbiting the Earth
    3. C.The International Space Station
    4. D.A communications satellite orbiting Mars
    Answer and check →

  5. Question 45

    3 marks · Normal

    A comet has an orbit that is much more elongated (stretched out) than the nearly circular orbit of a planet around the Sun.

    Answer and see the solution →

  6. Question 46

    3 marks · Normal

    Below is a simple diagram showing a planet and its moon.

    Geometry diagram with points Planet, MoonPlanetMoon
    Planet and Moon
    (a)

    On the diagram, draw an arrow to show the direction of the gravitational force acting on the moon.

    [1 mark]
    (b)

    Explain why this force does not pull the moon directly into the planet.

    [2 marks]
    Answer and see the solution →

  7. Question 47

    1 mark · Normal

    Name the type of satellite that the Moon is.

    Answer and see the solution →

  8. Question 48

    1 mark · Easy

    State the unit for gravitational field strength.

    Answer and see the solution →

  9. Question 49

    1 mark · Easy

    Which planet has the highest gravitational field strength among the following?

    1. A.Mars
    2. B.Venus
    3. C.Jupiter
    4. D.Mercury
    Answer and check →

  10. Question 50

    1 mark · Easy

    State the two factors that affect the gravitational field strength at the surface of a planet.

    Answer and see the solution →