Exploring our Universe- Lesson 1 Review Quiz

Galaxies that are redshifted are:

• actually blue.
• really far away.
• invisible.
• moving away from us.

The Cosmic Background Radiation is:

• the remaining energy from the big bang.

• incredibly hot.

• visible to the human eye.

• only located in certain places in the universe.

Light waves that are stretched out by objects moving apart:

• have a shorter wavelength.
• travel faster than the speed of light.
• are invisible.
• appear more red.

The universe is ____________ years old.

• 8.13 billion
• 13.7 billion

• 1.83 billion
• 381 million

If a star is being observed from Earth and it's light has shifted towards the blue side of the electromagnetic spectrum it would be...

• Moving towards the Earth
• Moving away from the Earth
• This is a trick question that cannot be answered
• It isn't a star, it is a very large blueberry.

Most scientists believe the Big Bang Theory explains which of the following questions?

• How our planets and moons formed

• How our universe began

• How the sun turns hydrogen into helium

• How fast light travels through space

An infinitely small, infinitely dense, and infinitely hot point that is believed to have existed before the big bang.

• Singularity

• Antimatter

• Little bang

• condensation nuclei

The doppler effect is the change in the frequency of waves emitted by a moving object. When the waves being emitted by the object are LIGHT waves, the change in frequency results in a change in __________.

• Brightness

• Heat

• Pitch

• Color

Which description is considered most accurate regarding what actually happened during the Big Bang?

• Two galaxies collided causing an immense explosion as stars crashed into one another

• All of what would become the universe was concentrated in a single small point, or singularity, which rapidly expanded into what is now stars, planets, galaxies, matter, and energy.

• All matter emerged from a massive black hole at the center of the universe.

• Parts of the sun were ripped off by massive internal explosions and were thrown into space where they cooled to become other things, like plants, comets, and other galaxies.

The Big Bang Theory is the most widely accepted theory about the origin of the universe.

• true

• false