NHS Astronomy

Which event occurred approximately 4.6 billion years ago?

• evolution of the earliest fish

• evolution of stromatolites

• formation of the oldest known Earth rocks

• formation of Earth and our solar system

Energy is produced within a star's core by the process of

• nuclear fusion

• insolation

• conduction

• radioactive decay

Earth, the Sun, and billions of stars are contained within

• a single constellation

• a giant cloud of gas

• the solar system

• the Milky Way galaxy

Which planet is now classified as a dwarf planet?

• Mercury
• Mars
• Pluto
• Jupiter

What is the name of the phenomenon that most likely created our universe?

• The big boom theory

• The giant bang theory

• The cosmic explosion theory

• The big bang theory

What does a star mainly consist of? (Tick 2 boxes.)

• helium

• iron

• carbon

• hydrogen

Which statement is NOT true about inner planets?

• Their density is low.

• They are smaller than gas giants.

• They are primarily comprised of a rocky type surface.

• Mercury, Venus, Earth, and Mars are inner planets.

How do you call this phenomenon?

• lunar eclipse

• ring of fire

• solar eclipse

• 24-hours long night

Which statement BEST summarizes The Big Bang Theory?

• whole universe began as a black hole and rapidly expanded, but is now collapsing
• whole universe began as a cool dense point and rapidly collasped, but is now expanding
• whole universe began as a hot dense point, rapidly expanded, and continues to expand
• the whole universe began as a hot dense point and rapidly expanded, but is now collapsing

As the moon's shape appears to get smaller, we say that the moon is _.

• swelling
• waxing
• waning
• disappearing