Which of these is a dwarf planet?
Mercury
Pluto
Jupiter
Which of the following is a natural satellite?
The Moon
The International Space Station
The Hubble Space Telescope
What happens to the speed and velocity of a planet in a circular orbit?
The velocity changes and the speed changes
The velocity changes but the speed remains constant
The speed changes but the velocity remains constant
Which body was the first stage in the formation of the Sun?
A nebula
A protostar
A nova
What sort of reaction mainly happens in the Sun?
Nuclear fission
Nuclear fusion
Chemical
What is red-shift?
The colour of light that comes from stars that are nearby
The red filter used by astronomers to analyse the light from distant stars
The change in wavelength of light from a distant galaxy moving away from Earth
Which of these statements best describes the main sequence stage of a star’s life?
The start of a star’s life as it is forming
The end of a star’s life when it explodes
The stable part of a star’s life where hydrogen is fused to helium and the forces are balanced
What feature is believed to be the thinly spread remains of energy released in the Big Bang?
Red-shift
Light energy
Cosmic microwave background radiation (CMBR)
Why do scientists believe in the Big Bang theory?
Its predictions are supported by observations
It was one of the first scientific ideas to explain the beginning of the Universe
They can see it happening in supernova explosions
Observations of which objects suggest that the Universe is expanding?
The Sun
Galaxies
Black holes