Cosmic Elements

Where was all of the hydrogen in the universe created?

• Big Bang
• small stars
• Large stars
• Cosmic Rays

What does a nebula contain that forms stars beside hydrogen?

• Dust containing sand and soil
• Dust containing carbon and silicon
• Dust containing hair and skin
• It only contains hydrogen

What type of star is smaller than 5 times the size of the sun?

• Large Star
• Cosmic Ray
• Small Star
• Planetary Nebula

What is the age of the Earth in Scientific Notation? (4,500,000,000 years)

• 4.5 years
• 4.5 x 10^5 years
• 4.5 x 10 ^9 years
• None of the choices

What stage of star development is a star fusing hydrogen into helium in its core?

• supernova
• planetary nebula
• red giant
• main sequence

What is the stage of a star that has no more hydrogen to fuse in the core.  Heat is causing the outer layers to expand.

• white dwarf
• supernova
• red giant
• main sequence

What do large stars have that small stars do not have to form the heavier elements?

• higher temperatures
• less mass
• lower temperatures
• black holes

Lighter elements up to Iron form from fusion and ______________ energy.

• input
• release
• destroy
• increase

Elements heavier than Iron form from the ________________ of energy.

• input
• output
• release
• destruction

What is one important result of a supernova?

• Destroys lighter elements
• Creates lighter elements
• Creates new heavier elements
  
• Destroys heavier elements