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The Earth forms part of a family of eight planets which orbit around the Sun. This solar system forms part of a huge collection of stars which form the Universe and are also known as galaxies.
Starting with the smallest, which of the following shows the correct order of size?
Planet, galaxy, Universe, solar system
Universe, galaxy, planet, solar system
Planet, solar system, galaxy, Universe
Which of the following lists contain only gas giants?
Pluto, Ceres, Jupiter
Jupiter, Uranus, Neptune
Mercury, Neptune, Saturn
Which of the following lists contain only rocky planets?
Jupiter, Mars, Ceres
Earth, Saturn, Venus
Earth, Mars, Mercury
Starting with the largest, what is the correct order of size of the following planets?
Earth, Venus, Mars, Mercury
Mercury, Earth, Mars, Venus
Venus, Earth, Mars, Mercury
1 AU is 150,000,000 km. If the speed of light is 3 × 108 m/s how long in seconds does it take light from the Sun to reach the Earth?
The Earth transmits a radio signal to Proxima Centauri which is 4.4 light years away from us. How long will it take the radio signal to arrive?
1,000s of years
What is the correct order in the life cycle of a high mass star?
Protostar, red giant, supernova
Main sequence, red supergiant, supernova
Protostar, main sequence, red giant
Which of the following colours is indicative of a star with a low surface temperature?
Which of the following elements is produced when a high mass star collapses?
Which gas is needed to start nuclear fusion in a star?