review sun galaxy and universe

Stars form in giant clouds of gas and dust. What are these clouds called?

• Black Hole

• White Dwarf

• Super Nova

• Nebula

Which describes the location of star A correctly?

• Star A is less bright than the Sun and has a surface temperature above 25,000 K

• Star A is brighter than the Sun and has a surface temperature below 25,000 K

• Star A is less bright than the Sun and has a surface temperature of above 11,000 K

• Star A is brighter than the Sun and has a surface temperature below 11,000 K.

Our Sun is classified as an average star. This places it in the middle of which type of star on the HR diagram?

• Main sequence

• White dwarf

• Red giant

• Super giant

According to this Hertzsprung-Russell Diagram which stars are brightest?

• Purple
• Red
• Blue
• Yellow

Black Holes are thought to be remnants of ______________ explosion.

• Death Star
• The Big Bang Theory
• Supernova
• Planetary Nebula

Betelgeuse is classified as a ____________ star.

• Supergiant
• Giant
• White Dwarf
• Main Sequence

Which type of stars belong in spectral class K and have the lowest luminosity?

• White Dwarf
• Giants
• Main Sequence
• Supergiants

Which of the following correctly places these in order from LARGEST to SMALLEST?

• galaxy -- local group/cluster -- planet -- solar system -- universe

• universe -- local group/cluster -- galaxy -- solar system -- planet

• planet -- solar system -- galaxy -- local group/cluster -- universe

• universe -- galaxy -- solar system -- local group/cluster -- planet

The initial explosion that resulted in the formation and expansion of the universe is called __________________.

• the Big Bang

• static state

• cosmic radiation

• dark matter

This model is known as

• geocentric model

• heliocentric model

• planetary model

• Orion model