Components of the Universe

The distance that light can travel in one year is called a...

• astronomical unit

• light year

• space travel

• time travel

Which type of radiation in the electromagnetic spectrum emitted by stars can a human detect with the naked eye?

• Gamma Rays

• Radio Waves

• Microwave Waves

• Visible Light

What is the next closest star to Earth after the Sun?

• Sirius

• The North Star

• Proxima Centauri

• Pluto

Which of the following is NOT a piece of evidence that supports the Big Bang Theory?

• Cosmic Background Radiation

• Red Shift in Galaxies

• Irregular Galaxies

• Light Element Abundance

Which type of galaxy is shaped like a pinwheel with spiral arms?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

Which type of galaxy has no definite shape?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

Which type of galaxy is shaped like an elongated sphere?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

What type of galaxy is the Milky Way Galaxy?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

What is a large celestial body that is composed of gas and emits light?

• planet

• comet

• star

• asteroid

What term correctly labels (a) on this diagram of a wave?

• wavelength

• crest

• trough

• amplitude