Which structure includes all matter and space that exists?

• A planetary system

• A star

• A galaxy

• The universe

Tags

NGSS.HS-ESS1-2

The universe is mostly:

• Made of stars

• Gas and dust clouds

• Rocky planets, moons and extraterrestrial objects such as asteroids

• Empty space

Tags

NGSS.HS-ESS1-3

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

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 stars during one year

• A way to measure the age of our universe

What is the Big Bang Theory?

• The most accepted scientific explanation for the creation of the universe

• The theory that the universe inflated rapidly from an infinitely small, dense spot

• A very unpopular theory that is not supported by any evidence

• Both a and b

Tags

NGSS.HS-ESS1-2

According to the Big Bang Theory, what happened during the first second of the universe’s existence?

• The universe expanded from smaller than a single atom to bigger than a galaxy

• Hydrogen atoms began to form

• The universe is a cold, -200 degrees Celsius

• The Milky Way Galaxy begins to form

Tags

NGSS.HS-ESS1-2

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’s not getting bigger or smaller

Tags

NGSS.HS-ESS1-2

Which of the following is NOT a piece of evidence for the occurrence of the Big Bang?

• The light from distant stars shifts towards the color red

• There is very low energy radiating in every direction throughout the universe

• The universe is starting to contract (get smaller)

• Most stars are made of hydrogen and helium – the first elements created in the universe

Tags

NGSS.HS-ESS1-2

According to the graph below, the majority of the universe is made of:

• Dark matter

• Dark energy

• Ordinary matter

• Hydrogen

Tags

NGSS.HS-ESS1-2

Which substance is responsible for the expansion of our universe?

• Dark energy

• Dark matter

• Ordinary matter

• None of the above – our universe is not expanding

Tags

NGSS.HS-ESS1-2