Year 11 Astrophysics

Which of the following is the largest?

• Planet

• Galaxy

• Satellite

• Comet

• Star

Which is the correct order for a star's life cycle?

• Main sequence -> red dwarf -> white dwarf

• Protostar -> main sequence -> neutron star -> Red giant

• Main sequence -> red supergiant -> supernova -> neutron star

• Red giant -> supernova -> white dwarf -> black dwarf

What is the reason a Main sequence star is so stable?

• The number of atoms remain the same

• The radiation pressure balances the pressure of weight/gravity

• Magnetic forces within it hold it together

• It has plenty of emotional support from it's friends

What is a comet?

• Large rocky ball of ice that orbits the sun

• Cluster of billions of stars

• Lumps of rock or iron that orbit the sun

• Minor planets

Which of the following are evidence for the big bang?

• Cosmic microwave background radiation

• Blue shift

• Gravity

• Black holes

Who came up with the Big Bang Theory?

• Einstein

• Ptolemy

• Copernicus

• LeMaitre

Evidence that galaxies are moving away from us.

• red shift of H spectrum

• blue shift of H spectrum

• background radiation

• .blue shift of He spectrum

Any object that orbits another object.

• Earth

• elipse

• star

• satellite

The ____ states that universe began as an extremely hot, dense point.

• Big Bang theory

• Law of universal gravitation

• Law of gravity

• Theory of relativity

The force of gravity ____ as the mass of an object increases.

• decreases

• increases

• remains constant

• disappears