Which structure includes all matter and space that exists?

• planetary system

• star

• galaxy

• 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 groups 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

• the amount of light energy emitted by a star during one year

• a way to measure the age of our universe

Tags

NGSS.HS-PS4-3

How is the size of our universe changing today?

• the universe is expanding (getting bigger)

• the universe is contracting (getting smaller)

• the size of the universe is steady - it is not getting bigger or smaller

Tags

NGSS.HS-ESS1-2

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

• elliptical galaxy

• spiral galaxy

• irregular galaxy

• all of the above

Earth and the solar system are found in:

• The Chocolate Milk Galaxy

• The Watery 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 does NOT correctly describe a star?

• a star is made of plasma

• a star has a solid surface

• a star "burns" hydrogen to produce light

• a star creates new and heavier elements as it produces light

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3

Which star would have the highest temperature?

• a red star

• a white star

• a yellow star

• a blue star