FINAL EXAM - - 6th grade

What is a light-year?

• the average speed at which light travels
• the distance light travels in one year
• a scientific measurement of space time
• the distance light travels in 350 days

Which term described the object circled in yellow in this image?

• galaxy

• universe

• solar system

• planet

What type of galaxy is the Milky Way?

• super cluster
• irregular galaxy
• elliptical galaxy
• spiral galaxy

The star, ___________ is 44x wider than our Sun.

• Pluto
• Aldebaran
• Betelgeuse
• Rigel

Which of the following is NOT a type of galaxy?

• Spiral

• Elongated

• Irregular

• Elliptical

Patterns of stars in the sky are called ______________________

• constellations
• galaxies

• nebula

• universes

Stars vary in color, which is related to what?

• It's distance from Earth
• How old the star is
• The strength of its gravity
• It's temperature

A __________ is a huge collection of stars, gas and dust.

• Galaxy
• Super nova
• Universe
• Variable star

What causes galaxies to gather in clusters?

• Dark space
• Dark matter
• Gravity
• Solar System

What color are the hottest stars?

• red
• yellow
• orange
• blue