Fall Semester Test 2018-19

Hubble observed that most galaxies are

• expanding

• moving away from us

• moving towards us

• standing still

Why is the light from distant galaxies red-shifted?

• They produce more red light than nearby galaxies
• They are moving away from us
• The longer wavelengths are filtered out more by dust
• They are moving toward us

What were the original two elements in our universe?

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

The existence of the cosmic background radiation implies that

• the big bang model is wrong.
• the universe began in a hot, dense state.
• the universe did not have a moment of creation.
• the universe began in a cold, low-density state. 

Tags

NGSS.HS-ESS1-2

The change in wavelength of light or sound that is due to the relative motion of the source towards or away from an observer.

• Radar Effect
• Doppler Effect
• Light Effect
• Reflection

What theory explains that the 4 fundamental forces were combined early after the big bang and the universe expanded faster than the speed of light?

• Big Crunch

• Nucleosynthesis

• The Doppler Effect

• Inflation

What is the primary element that stars fuse early in their life cycle?

• Helium
• Dust
• Hydrogen
• Iron

Our sun will supernova towards the end of its life cycle

• True
• False

Where is our sun on the HR diagram?

• Bottom Left
• Top Right
• Main Sequence
• Top Left

Which of the following would be classified as the beginning of star formation?

• red dwarf
• main sequence
• protostar
• white dwarf