Test 2 Flashcards
How is the Passage Of Time measured?
By something changing
The Universe moves from ? To ?
Order to Disorder. Not Disorder to Order
When the Universe moves from Order to Disorder this is called?
The Arrow of Time
What is Entropy?
A measure of disorder
How old is the Universe? (Approximately)
13.8 billion years old.
What is the Speed Of Light and its symbol?
The speed of light is 300,000,000m/s and the Symbol is C.
What’s the highest speed achievable?
The Speed Of Light.
When we view stars we are?
Looking back in time.
What is a Light Year?
A light year is a distance (not a time) that measures places in the universe.
Example: the Andromeda galaxy is 2.5 million light years away.
Who suggested that the universe is expanding?
Monsignor Georges Lemaître
Who obtained proof of Lemaître’s theory?
Edwin Hubble.
What does Edwin Hubble’s theory describe?
That the further away a galaxy is, the faster the recessional speed.
What was the Big Bang?
The Big Bang was a huge explosion from a tiny point at the start of the universe, this is how the universe began.
What were the first particles to form after the Big Bang?
Quarks.
Name the Six Quarks
Up,Down,Top,Bottom,Charm,Strange
