The Scale of The Universe

Which of the following is in order from biggest to smallest

• Universe, Galaxy, Comet, Solar System

• Solar System, Comet, Universe, Galaxy

• Universe, Galaxy, Solar System, Comet

• Comet, Solar System, Galaxy, Universe

Which of the Following fit the profile for Spiral Galaxy's?

• Has a mix of older and newer stars

• Lots of gas & dust

• Our own Galaxy

• Shaped like a flattened ball

• Has older stars

Name 1 of the 2 units to measure distance in space

Which of the following is not a requirement to be a planet?

• It must orbit a star

• It must have a natural satellite

• It must be round

• It must have cleared away other objects near its orbit

Which of the following would consider a planet a dwarf planet

• It must orbit a star

• It must be round

• It must have cleared away other objects near it

• It must orbit a star and be round

• It must have cleared nearby debris and orbit a star

Would you use Astronomical Units to measure the distance from one planet to another? (Type "yes" or "no")

Would you use Astronomical Units to measure the distance from our galaxy to another? (Type "yes" or "no")

Is a galaxy bigger than a nebula?

• Yes

• No

The center of solar systems are?

• a nebula

• a planet

• a moon

• a star

• a comet

Using the scale above, what is bigger than a solar system from smallest to biggest? (Space every thing out using commas. Ex, "moon, planet")