Big Bang and Dark Matter

What do we call a cluster of stars, dust, gas and matter?

• a planet

• a star system

• a planetary system

• a galaxy

What units do we use to measure the distance between galaxies?

• kilometers

• bilometers

• light years

• sound years

What is the name of the scientific theory that explains how the universe was created?

• The Balloon Theory

• The Big Bang Theory

• The Big Explosion Theory

• The Small Bang Theory

What existed one second after the Big Bang?

• hydrogen

• stars

• elementary particles

• galaxies

What did the first dying stars create?

• hydrogen

• helium

• heavy elements

• hydrogen and helium

The majority of the universe is made of

• dark energy

• dark matter

• hydrogen

• ordinary matter

Approximately how much of the universe is made of ordinary matter?

• 75%

• 50%

• 25%

• 5%

Which word best describes a singularity?

• large

• cold

• dense

• flammable

Which term best describes conditions a few seconds after the Big Bang took place?

• frigid

• scorching

• liquid

• placid

According to the Big Bang theory, how old is the universe?

• 6000 years

• 65 million years

• 4.5 billion years

• 14.5 billion years