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Motion in the universe

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Question 2
a.

Diagram 1 shows the orbits of two astronomical objects around a central body.

A central solid black circle representing a body with a pointer line leading to label (i). Around this central body is a dashed circular orbit line containing a smaller circle with a pointer line leading to label (ii). There is also a highly elongated, eccentric dashed elliptical orbit line that stretches far to the right, containing a small circle with a pointer line leading to label (iii).

Select words from the list below to identify the three labels (i), (ii), and (iii):

  • comet
  • galaxy
  • planet
  • star
[3]
b.

An artificial satellite is in a stable circular orbit around the Earth. State the direction of the gravitational force acting on this satellite.

[1]
c.

Give the scientific term for a large collection of billions of stars.

[1]

Motion in the universe Questions

  1. IGCSE
  2. /Physics
  3. /Motion in the universe