Space Physics and Astronomy - SS1 Physics Past Questions and Answers - page 1
Which of the following is the largest planet in the solar system?
Earth
Mars
Jupiter
Venus
Which planet is known for its prominent ring system?
Saturn
Mercury
Uranus
Neptune
What is the average distance between the Earth and the Sun?
149 million kilometres
384,400 kilometres
57.9 million kilometres
227.9 million kilometres
Which celestial body is considered a dwarf planet?
Mercury
Pluto
Mars
Venus
What is the largest moon in the solar system?
Europa
Titan
Ganymede
Triton
What is the name of the nearest star to the Earth?
Alpha Centauri
Sirius
Proxima Centauri
Betelgeuse
Which planet has the highest average surface temperature in the solar system?
Mercury
Venus
Mars
Jupiter
How many planets are there in the solar system?
7
8
9
10
Which planet has the most moons?
Earth
Saturn
Mars
Uranus
Describe the characteristics and composition of the Sun.
The Sun is a star at the centre of the solar system. It is composed mainly of hydrogen (about 74%) and helium (about 24%). The Sun has three main layers: the core, the radiative zone, and the convective zone. It releases energy through nuclear fusion, where hydrogen nuclei combine to form helium, releasing tremendous amounts of energy in the process.