18.2

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

Our Galaxy is called the

• Mily Galaxy
• Milky Way Galaxy
• Andromeda Galaxy
• Pinwheel Galaxy

Why won't our sun ever become a black hole?

• It is too massive
• It is too old
• It is too young
• It is too small

Which body in our solar system is classified as a star

• Haleys Comet
• Pluto
• The Sun
• Mars

What stage comes directly before the "main sequence" in the life cycle of star?

• Cloud of Gas
• Red giant
• Protostar
• Shell of Gas

What process takes place inside a star to generate energy

• Nuclear fission
• Hydrogen Creation
• Nuclear fusion
• Helium forming

What is responsible for bringing the particles together when a star is first born?

• Electrostatic Attraction
• Heat Energy
• Cosmic Radiation
• Gravity

What were the original two elements in our universe?

• Lithium and Carbon
• Hydrogen and Neon
• Helium and Chlorine
• Hydrogen and Helium

Stars are formed in a large cloud of gas and dust called a

• cumulonimbus cloud
• nebula
• neutron star
• black hole