The Universe Unit

Which type of galaxy is shaped like a pinwheel with spiral arms?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

Which type of galaxy has no definite shape?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

Which type of galaxy is shaped like an elongated sphere?

• spiral galaxy

• elliptical galaxy

• irregular galaxy

The universe has may different components.  Which list places four components of the universe in the most likely order from smallest to largest.

• Planets, Stars, Galaxies, Nebulae
• Nebulae, Stars, Planets, Galaxies
• Galaxies, Stars, Planets, Nebulae
• Planets, Stars, Nebulae, Galaxies

A system of stars, gas, dust, and dark matter bound together by gravity is called ---

• an asteroid
• a nebula
• a galaxy
• a moon

Tags

NGSS.MS-ESS1-2

Stars are made up mostly of which two elements?

• Hydrogen and Helium
• Mercury and Strontium
• Iron and Potassium
• Krypton and Bismuth

Tags

NGSS.HS-ESS1-3

The stars and all the other matter in a galaxy are held together by which of the following?

• Dark Matter
• Inertia
• gravity
• magnetism

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Which of the following best describes a star?  A star is a celestial body ---

• composed of rock and metal with a very high density
• that is too big to be an asteroid, but too small to be a planet.
• that rotates on an axis and revolves around the Sun
• composed of gases that emit light due to nuclear reactions

Which of the following best describes a nebula.  A nebula is

• a region in the solar system that is occupied by irregularly shaped bodies
• a large and icy celestial body with an irregular orbit around the Sun
• a natural satellite created by the collision of two large asteroids
• an interstellar cloud of dust, hydrogen, helium and other gases

Why does Earth get more energy from the sun than from all the other stars in the universe combined?

• The sun is much larger than other stars.
• The sun is much hotter than the other stars.
• The sun is much more dense 
• The sun is much closer than the other stars.