Astronomy Review

Fill in the blank: Nearly all elements were formed at some point during the life cycle of stars, except for ______, helium, and lithium.

• hydrogen

• carbon

• oxygen

• nitrogen

What are the four aspects of electromagnetic radiation that astronomers measure and investigate?

• Wavelength, Frequency, Amplitude, Speed

• Wavelength, Frequency, Energy, Polarization

• Wavelength, Speed, Energy, Temperature

• Frequency, Amplitude, Speed, Temperature

The difference between refractor and reflector telescopes is:

• Refractor telescopes use lenses, while reflector telescopes use mirrors.

• Refractor telescopes use mirrors, while reflector telescopes use lenses.

• Both use lenses.

• Both use mirrors.

The chromosphere and corona are parts of which celestial body?

• The Moon

• The Earth

• The Sun

• Mars

The aurora borealis is caused by:

• solar winds interacting with the Earth's magnetic field

• volcanic eruptions

• ocean currents

• earthquakes

What is the main element involved in nuclear fusion in the sun?

• Hydrogen

• Helium

• Carbon

• Oxygen

How long is the estimated total lifetime of our sun?

• 10 billion years

• 5 billion years

• 20 billion years

• 15 billion years

The Hertzsprung-Russell diagram plots which of the following?

• Temperature vs. Luminosity

• Distance vs. Brightness

• Mass vs. Age

• Size vs. Color

What will happen to our sun when the hydrogen is burned up?

• It will become a red giant.

• It will explode into a supernova.

• It will shrink into a white dwarf.

• It will turn into a black hole.

What was the main issue in the Nebula debate?

• The classification of nebulae

• The distance of nebulae from Earth

• The composition of nebulae

• The age of nebulae