Structure of the Universe Final Understanding Check

Which structure includes all matter and space that exists?

• A planetary system

• A star

• A galaxy

• The universe

The universe is mostly:

• Made of stars

• Gas and dust clouds

• Rocky planets, moons and extraterrestrial objects such as asteroids

• Empty space

What is a planetary system?

• A cluster of planets

• Planets that orbit a star (or stars)

• A star (or stars) that orbit a large planet

• A group of extraterrestrial objects (such as asteroids) that orbit a planet

Tags

NGSS.MS-ESS1-2

What is a light year?

• The distance light travels in one year

• A way to compare the speed of light to the speed of sound

• The amount of light energy emitted by star during one year

• A way to measure the age of our universe

Which type of galaxy often has a supermassive black hole in its center?

• An elliptical galaxy

• A spiral galaxy

• An irregular galaxy

• All of the above

Tags

NGSS.MS-ESS1-2

Earth and the solar system are found in:

• The Chocolate Milk Galaxy

• The Williams Galaxy

• The Milky Way Galaxy

• The Watery Way Galaxy

Tags

NGSS.MS-ESS1-2

In order for a celestial object to be considered a planet it must:

• Orbit a star

• Be spherical due to its gravity

• Have cleared its orbital path around the star it revolves

• All of the above

Which of the following statements is NOT true about moons?

• A moon is a “natural satellite” of a planet

• Moons are usually solid and rocky

• All planets have at least one moon orbiting them

• Moons are usually round, but can be egg-shaped

Tags

NGSS.MS-ESS1-1

The majority of asteroids in the Solar System are found:

• Orbiting very close to the sun

• In a belt between the inner and outer planets

• In a belt outside the solar system

• Orbiting the sun at the same distance as Jupiter

Which extraterrestrial object spews off gas and dust, producing a coma and tail around its icy body as it passes close to earth?

• An asteroid

• A comet

• A meteoroid

• A meteor