2 Inflation, Dark Matter and Dark Energy

Inflation, Dark Matter and Dark Energy

Big Bang Review

Big Bang Animation

Multiple Choice

Most Scientist believe the Big Bang Theory explains which of the following questions?

• How our planet and moons formed

• How our universe began

• How fast light travelsthrough space

• How the Sun turns hydrogen into helium

Multiple Choice

How old scientists think the Universe is?

• about 14 billion years old

• 24,000 years old

• 4.5 billion years old

• 5 years old

Multiple Choice

A theory of exponential expansionof space in the early universe

• quarks

• Inflation

• cosmic background radiation

• red giant

Multiple Choice

It is now theorized that dark ___________ speeds up the espansion of the universe and dark _________ slows it down.

• matter, energy

• energy, matter

• gravity, energy

• gravity, matter

Multiple Choice

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

• dark energy

• dark matter

• solar systems

• stars

Multiple Choice

Scientist believe only five percent of the Universe is made up of ________________

• dark energy

• all known objects

• dark matter

• gravity