Galaxies and Light Years

A light year is...

• The speed light travels
• How long it takes light to get to you from the sun
• The distance light can travel in a year
• How many years it takes light to be emitted

Scientist use Light years to measure objects in space rather than units such as Miles or Kilometers because of how massive the Galaxy and Universe is.

• True
• False

Proxima Centauri is the closest star to Earth after the Sun and is located 4.3 light years away from Earth. How long does it take light from Proxima Centauri to reach Earth?

• 1 year
• 4.3 years
• 43 years
• 10 trillion years

A scale diagram of four galaxies is provided. Which galaxy has a diameter closest to 75,000 light years?

• Galaxy JK23
• Galaxy TO37
• Galaxy RB17
• Galaxy WD28

To express the distance between the Milky Way galaxy and the Andromeda galaxy, the most appropriate unit of measure is the -

• meter
• kilometer
• light year
• astronomical unit

Light Years are a measure of:

• time
• speed
• distance
• light

What does Buddy the Elf tell the mall Santa he smells like?

• Sunshine
• Peppermints and joy
• Beef and cheese
• Chicken and chips

What is the first name of Mr. Scrooge?

• Nicholas
• John
• Fitzgerald
• Ebenzer

What is Hermey the elf's dream job?

• Head Toy Maker
• Teacher
• Police Officer
• Dentist

What's our galaxy's name?

• Andromeda
• Milky Way 
• Mars
• Jupiter