Astronomy

The formation of elements through the combination of smaller atomic nuclei with other nuclei and particles is called:

• nucleosynthesis

• nucleogenesis

• nuclear fission

• quark recombination

We are limited in how far back in the universe's past we can see because

• we're just too far away from where the Big Bang occurred

• light from then is red shifted so that we can't see it

• the first several hundred thousand years the universe was not transparent

• light is to slow to get to us from there yet

Hydrogen is the most common element in the universe. What is the second most common element?

• carbon

• lithium

• uranium

• helium

Which statement is not true about the redshift of light?

• It indicates everything in the universe moves away from everything else.

• It occurs because of the Doppler Effect.

• It was first detected in galactic spectra by Max Planck.

• It is one piece of evidence that the universe is expanding.

Which event in the universe's history happened after the universe became transparent?

• The Planck Epoch

• Formation of the first stars

• Nucleosynthesis

• Cosmic inflation

This spectral type consists of the most massive stars.

• O stars

• G stars

• A stars

• K stars

Our sun is this spectral type.

• A star

• M star

• F star

• G star

The least massive stars end their life cycle as:

• White dwarfs

• Neutron stars

• Pulsars

• Dust clouds

On a Hertzsprung-Russell diagram, most stars spend the majority of their life as

• F stars

• Main sequence stars

• Planetary nebula

• Giant stars

Between now and the last stage of our sun's life as a white dwarf, it will become

• a red giant

• a supernova

• a magnetar

• an emission nebula