7th grade science structure of the universe

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

• empty space

• Rocky planets, moons and extraterrestrial objects such as asteroids

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.HS-ESS1-4

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

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

• A way to measure the age of our universe

Tags

NGSS.HS-PS4-3

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

• An elliptical galaxy

• A spiral galaxy

• An irregular galaxy

• All of these options

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 these options

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 at the outside edge of the solar system

• Orbiting the sun at the same distance as Jupiter

Tags

NGSS.HS-ESS1-4

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

Which of the following is the most massive object in the solar system?

• The sun

• The Earth

• Mars

• Jupiter

Which is the largest planet in the Solar System and has a prominent red spot?

• Jupiter

• Saturn

• Uranus

• Mars