Unit 2 Quiz - The Universe

What is a light year?

• The distance that light travels in one year

• Buzz's name

• A large collection of stars, gas, and dust that is help together by gravity

• The measure of a star's brightness

What is a solar system?

• The distance that light travels in a year

• The collection of large and small bodies that orbit our central star

• Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

• A large collection of stars, gas, and dust held together by gravity

Which star has the greatest luminosity?

• Vega

• Rigel

• Sirius

• Betelgeuse

Which star looks looks the brightest from Earth?

• Sirius

• Aldebaran

• Rigel

• Vega

How are stars measured?

• Kilometer

• Light year

• Solar radius

• Astronomical Unit

What statement best describes the relationship between temperature and star color?

• A blue star has a relatively low temperature

• A red star has a relatively high temperature

• A blue-white star has a relatively low temperature

• A yellow star has a relatively low temperature

What is a binary star system?

• A star that appears blue at night

• Two stars that orbit each other

• Two pairs of stars that orbit each other

• A star that is orbited by a gas giant

Which of these shows the correct order from coolest to hottest?

• red, yellow, white, blue

• white, blue, yellow, red

• yellow, white, blue, red

• blue, yellow, white, red

What describes this group of stars?

• The universe

• A galaxy

• A moon

• A solar system

List the following items in the correct order from largest to smallest:

• universe, planet, star, galaxy

• galaxy, planet, star, universe

• universe, galaxy, star, planet

• galaxy, universe, star, planet