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A main-sequence star in a nearby galaxy has a mass about 15 times greater than that of the Sun.

a.

Explain why this massive star remains stable while it is in the main sequence stage of its life cycle.

[2]
b.

Describe what will happen to this massive star from the end of its main sequence stage to the end of its life cycle. You should include the names of the stages in the life cycle of this star.

[3]
c.

The graph below shows how the speed of several galaxies moving away from Earth varies with their distance from Earth.

A scatter graph with 'Speed of galaxy moving away from Earth' on the vertical y-axis and 'Distance of galaxy from Earth' on the horizontal x-axis. The plotted points lie along a line showing a strong positive correlation. Four points are specifically highlighted: point P is near the bottom-left representing low speed and low distance; point Q is at a moderate distance and speed; point R is further out and faster; point S is at the top-right end of the graph, representing the highest speed and the greatest distance.

Which galaxy (P, Q, R, or S) would show the greatest increase in the observed wavelength of visible light (the largest redshift)? Give a reason for your answer.

[2]

Solar system; stability of orbital motions; satellites (physics only) Questions

Practise AQA GCSE Physics Solar system; stability of orbital motions; satellites (physics only) with exam-style questions for Foundation and Higher tier. 27 questions covering Our solar system, The life cycle of a star, and Orbital motion, natural and artificial satellites, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Solar system; stability of orbital motions; satellites (physics only) Questions

  1. GCSE
  2. /Physics
  3. /Solar system; stability of orbital motions; satellites (physics only)