Unit Test on the Universe

A group of stars, and or star systems, star clusters, dust and gas held together by gravity is known as:

• Universe
• Galaxies
• Solar system
• Nebula

_______ is the distance light travels in one year.

• astronomical unit
• light year
• meters
• kilometers

What type of galaxy do we live in?

• irregular
• elliptical
• spiral
• quasar

_______ stars are the hottest?

• red
• yellow
• blue-white

What could be pushing the galaxies apart?

• dark matter
• black holes
• dark energy

What is the next stage in star formation when a super giant explodes?

• super nova
• planetary nebula
• black hole
• neutron star

What is 1 astronomical unit converted into kilometers equal?

• 150km
• 1500km
• 150,000km
• 150,000,000km

What is a small planet that has not cleared its orbit called?

• small planet
• Mercury
• inner planet
• dwarf planet

What are rocky objects that are made of gas, ice and dust and have a long tail called?

• asteroid
• comet
• meteor
• moon

What are areas of on the sun that are darker in color because they are spots of cooler plasma?

• hot spot
• sunspot
• solar flare
• magnetic field