ESS 5a.Quiz

How did the universe originate?

• An alternate universe that was reborn

• A single point of energy that expanded

• From an inverted black hole

• A ball of atoms

What is the current state of the universe?

• Expanding at an increasing rate

• Shrinking at an increasing rate

• Not changing

• Expanding at a decreasing rate

What color of light is emitted by galaxies moving away from us?

• Blue

• Yellow

• Pink

• Red

What color of light is emitted by galaxies moving towards us?

• Blue

• Purple

• Green

• Brown

How does redshift support the Big Bang theory?

• All galaxies share a signature amount of radiation that could only originate from the Big Bang

• Our galaxy emits red light which indicates a shift in expansion

• Most galaxies emit a red light indicating the universe is expanding and originates from a single source

• The furthest galaxies appear to be the oldest galaxies due to their light shifting to a dimmer brightness

What is Hubble's Law?

• Closer objects move away faster while further away objects move slower

• All galaxies are moving away from us at the same speed

• The velocity of a galaxy is directly proportional to its mass

• Further objects move away faster while closer objects move away slower

How does Hubble’s law support the Big Bang theory and the expanding universe?

• The universe must be expanding due to galaxy velocities that increase with distance

• Hubble’s law is unrelated to the expanding universe

• All galaxies appear to be moving away at the exact same velocity

• The universe must be shrinking due to a weakening force of gravity

Why did the early universe glow orange like a hot metal?

• The first sun was born

• The first and most common elements from the Big Bang were metals

• Orange was first color to be created after the Big Bang

• The hot universe cooled to a temperature light was able to travel

What happened to the CMB over 13.8 billion years of an expanding universe?

• It shrank into more powerful and destructive gamma rays

• It stretched from visible light into radio waves

• It slowly disappeared therefore we can only hypothesize of its existence

• It transformed into all the different galaxies in existence today

Why is the age and location of the CMB so significant?

• It is nearly the same age of the universe and found everywhere at the edge of the universe due to expansion

• It is actually older and found only at the center of the universe

• It is nearly the same age and is emitted from all stars

• It is half the age of the universe and emitted by each galaxy