Astronomy Unit Quiz #1

A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

• Big Bang Theory

• Singularity Theory

• Galaxy Theory

A large grouping of stars, planets, gas, and dust in space held together by gravity.

• Universe

• Galaxy

• Space

The change in wavelength that allows us to determine if an object if moving toward us or away from us

• Whiteshift and Blueshift

• Redshift and Greenshift

• Redshift and Blueshift

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.

Which of the following is evidence of the Big Bang Theory?

• Cavemen heard a loud bang at the beginning of time.
• The universe isn't moving
• The universe is expanding
• The universe is getting smaller

What can we conclude from the observation that nearly all galaxies are moving away from us?

• Massive black holes are drawing galaxies away from Earth.
• The Sun and Earth are located at the center of the universe.
• Everything in the universe is moving the same direction.
• The once-smaller universe is expanding in all directions.

Galaxies that are REDSHIFTED are:

• actually BLUE

• really NEAR earth

• invisible or not visible

• moving AWAY from us.

Most distant galaxies show a RED SHIFT. This is considered EVIDENCE that the universe is ___.

• getting cooler

• expanding

• condensing into a small point

• swirling around

The CMB (Cosmic Background Radiation) is:

• the remaining energy from the big bang.

• incredibly cool.

• a cloud of light

• only located in certain places in the universe.

The universe is expanding.  This means that:

• Galaxies are getting bigger.
• Atoms are getting bigger.
• The universe is creating more matter.
• The amount of space between galaxies is increasing.