origins of the universe - review sheet

Which theory is currently the most widely accepted explanation for the origin of the universe?

Big bang theory

Which evidence best supports the big bag theory ?

Cosmic microwave background radiation

According to the steady state theory , as the universe expands :

New matter is created to keep density constant

The oscillating universe theory suggests that:

The universe expands and then contracts repeatedly

What is the key idea of multiverse theory?

There are many universes with different physical laws

What is the big bang theory?

The u inverse began from a hot, dense point and continues expanding

What is steady state theory?

New matter is created as the universe expands to keep it unchanging

Oscillating universe theory

The universe goes through endless cycles of expansion and contraction

What is multiverse theory?

Suggests multiple universes may exists with different laws of physics

What is the String theory/ brane cosmology ?

The universe is made of vibrating strings and may exist in extra dimensions

What is the plasma cosmology?

Electric and magnetic forces in plasma shape the universe’s structure

What is the one challenge scientists face in proving the multiverse theory?

The universe can’t be observed or measured directly

How does string theory connect to the idea of extra dimensions?

The universe exists on a kind of floating surface in a higher dimensional space