EarthSci Unit 4 Review

What can we determine from the Red Shift?

• The universe is expanding.

• The sun is a medium sized star.

• The elements found in stars.

• The edge of the observable universe.

Radio telescopes have detected faint background radiation. What do we call background radiation?

• Red Shift

• Cosmic microwave

• Recombination

• Nucleosynthesis

What happened just before the Big Bang? The Big Bang theory is supported by observations of distant galaxies receding from our own, of the measured composition of stars and non-stellar gases, and of the maps of spectra of the primordial radiation (cosmic microwave background) that still fills the universe.

• Cosmic inflation

• Nucleosynthesis

• Recombination

• Dark Ages

What are the three basic shapes of galaxies? Select all that apply. Construct an explanation of the Big Bang theory based on astronomical evidence of light spectra, motion of distant galaxies, and composition of matter in the universe.

• Spiral

• Elliptical

• Irregular

• Irrational

What type of galaxy is this?

• Spiral

• Elliptical

• Irregular

• Irrational

What type of galaxy is this?

• Spiral

• Elliptical

• Irregular

• Irrational

What type of galaxy is this?

• Spiral

• Elliptical

• Irregular

• Irrational

We call our galaxy the __________ ___________.

The milky way is a __________ galaxy.

• Spiral

• Elliptical

• Irregular

• Irrational

What do we know about the temperature of blue stars?

• Nothing

• They are the coolest

• They have an average temperature

• They are the hottest