YR 10 SC - The Universe Review Quiz 2

Which of the following ideas make up the Big Bang Theory?

• The Universe is currently expanding.

• The Universe was once hot and dense.

• The Universe has a finite size.

• The Universe is unbounded.

According to the big bang theory, the universe began as an explosion and is still expanding. This theory is supported by observations that the stellar spectra of distant galaxies show a

• concentration in the yellow portion of the spectrum

• concentration in the green portion of the spectrum

• shift toward the blue end of the spectrum

• shift toward the red end of the spectrum

In which list are celestial features correctly shown in order of increasing size?

• galaxy, solar system, universe, planet

• solar system, galaxy, planet, universe

• planet, solar system, galaxy, universe

• universe, galaxy, solar system, planet

Cosmic Background Radiation is...

• Alpha Particles from the nearest black hole

• The light from our sun

• The leftover energy from the formation of our sun

• The leftover energy from the Big Bang

How old do we estimate the universe to be?

• 13.8 billion years old

• 25 million years old

• 13.8 million years old

• 8 billion years old

In ____shift, the galaxies appear _____ in color b/c they are moving away from us.

• blue; red
• red; red
• red; blue
• blue; blue

______ is a force that causes dust particles to stick together in a nebula.

• nuclear fusion
• gravity
• hydrogen
• iron

All stars begin as a __________?

• giant
• black hole
• white dwarf
• nebula

Nebula's are mixtures of gases and what?

• clouds
• stars
• tiny particles
• dust

What force acted on the massive nebula to collapse it and eventually form our sun?

• electrostatic force
• strong force
•  weak force
• gravity