Structure of the Universe - exam practice
Structure of the Universe
Question 1 of 5
This question is about the structure of the universe.
The following are all astronomical objects:
- star
- universe
- solar system
- planet
- galaxy
Rank them from smallest to largest.
State the name of the galaxy that Earth is in.
The international space station is an artificial satellite.
Explain what is meant by the term artificial satellite.
State the name of the natural satellite that orbits the Earth.
This question is about the Universe and the astronomical objects that are in it.
Complete the table below to name the astronomical objects in our galaxy.
State the name of the force that holds Earth in orbit around the Sun.
The table below shows the orbital time period for the first 4 planets around the Sun.
Plot a bar graph to show the orbital period of each planet around the Sun.

Describe how the orbital time period varies with distance from the Sun.
This question is about our Solar system.

What is the name of the planet labelled A?
What is the name of the planet labelled B?
What is the name of the planet labelled C?
On the diagram below draw the orbit of Earth's moon.
Explain what is meant by the term artificial satellite.
This question is about astronomical objects in space.
Match the object to the correct description.
State the name of three astronomical objects found in a solar system.
This question is about astronomical objects in the universe.
Which list shows the astronomical objects in order of size, starting with the smallest?
State the name of the planet closest to the Sun.
Describe the shape of a planet's orbit around the Sun and state the name of the force holding it in orbit.
Describe how the orbit of Mars is different to the orbit of Earth.