Stars and Galaxies

What is the theory that states the universe began with a huge explosion?

• Apparent Magnitude
• Light year
• Big Bang Theory
• Galaxy

What is a small, hot, dim star that is the leftover center of an old star?

• Spiral Galaxy
• Supernova
• White Dwarf
• Black Hole

What is gigantic explosion that causes the death of a massive star?

• Supernova
• Nebula
• Red Giant
• White Dwarf

What is an object that is so massive and dense that even light can not escape its gravity?

• Main-sequence
• black hole
• Apparent Magnitude
• Comet

What is a large grouping of stars, dust, and gas bound together by gravity?

• Nebula
• Galaxy
• Cosmology
• Gravity

What is a large cloud of dust and gas where new stars are formed or stars explode?

• quasar
• black hold
• supernova
• nebula

The Milky Way Galaxy is most likely 

• an irregular galaxy
• a spiral galaxy
• an elliptical galaxy
• a nebula

Which is the hottest?

• a red giant
• small, white dwarf
• main-sequence yellow star
• main-sequence blue star

Which shows the correct sequence of a star's life cycle?

• main sequence, red giant, white dwarf
• main sequence, white dwarf, red giant

The sun appears brighter than other stars because

• it is the largest star in the universe
• it is the hottest star in the universe
• able to radiate more energy than other stars
• is closer to Earth than other stars