Intro to Astronomy practice

Which EM waves have the longest wavelength?

• radio

• x-rays

• ultraviolet

• gamma rays

Which EM waves have the shortest wavelength?

• radio

• x-rays

• ultraviolet

• gamma rays

Which EM waves are have a SHORTER wavelength than visible?

• radio

• none

• infrared

• x-rays

Which EM waves are have the lowest frequency?

• radio

• none

• infrared

• x-rays

What does the Big Bang theory suggest?

• The universe was just there
• The Milky Way is the only solar system
• The universe is continually expanding
• The universe is collapsing in toward a single point

What type of galaxy do we live in?

• Spiral
• Elliptical
• Irregular
• Coaxial

How many galaxies are in the known universe?

• Hundreds
• Thousands
• Millions
• Billions

Which star has the lowest luminosity?

• A
• B
• C
• D

Which star has the lowest temperature?

• A
• B
• C
• D

Which star is considered a Main Sequence Star?

• A
• B
• C
• D