Big Bang Theory and Galaxies

The initial explosion that resulted in the creation and expansion of the universe is known as the

• Big Bang Theory

• Milky Way

• Great Expansion

Tags

NGSS.HS-ESS1-2

Following the Big Bang, the Universe:

• expanded and then rapidly stopped expanding

• expanded and has not stopped expanding since

• rapidly expanded and then shrunk back to its original size

Tags

NGSS.HS-ESS1-2

Scientists believe the Big Bang happened:

• 14 million years ago

• 14 trillion years ago

• 14 billion years ago

Tags

NGSS.HS-ESS1-2

When looking at the night sky, the brighter stars are typically:

• farther from Earth than dimmer stars.

• closer to Earth than dimmer stars

• the same distance from Earth as all other stars

Which best describes the Big Bang Theory?

• The universe has always been the way it is today.

• The universe began from a dying star.

• The universe was created by a single explosion

Tags

NGSS.HS-ESS1-2

In addition to gravity, _______ is believed to hold galaxies together.

• Dark Energy

• Dark Matter

• Solar Systems

Scientists believe only 5% of the universe is comprised of:

• dark energy

• all known objects

• dark matter

It is currently theorized that dark _____ speeds up the expansion of the universe and dark ______ slows it down.

• matter, energy

• energy, matter

• matter, gravity

The rapid expansion of the universe following the Big Bang is known as:

• Flattening

• System Creation

• Inflation

Tags

NGSS.HS-ESS1-2

Which term represents a larger area?

• universe

• galaxy

• they are all the same