Formation of stars
Life cycle of a star
Galaxies
Big Bang or Oscillating theory
True and False
100
As ____ keeps working, the mass grows and the material collapses in on itself and contracts.
What is gravity
100
Start small and exist that way for most of their life as a dim, cool red ___
What is a dwarf star
100
A galaxy that does not have any regular shape.
What is an irregular galaxy.
100
In a very short time, all the matter and energy in the universe was formed.
What is the Big Bang Theory.
100
The Moon can be used to tell direction at night because it is at a fixed point almost directly above the Earth's North Pole.
What is False.
200
The early phase of a star is called a ___
What is protostar
200
An intermediate mass stars (the Sun) only last about ____ billon years
What is 10 to 15
200
A galaxy is a collection of stars, ___ , and dust held together by gravity.
What is gas
200
All matter will meet again in a Big Crunch.
What is the Oscillating Theory.
200
A galaxy does not change its position within the universe.
What is False
300
A ___ is a object in space made up of hot gases.
What is a star
300
Dwarf stars eventually change to hot dim ___ dwarfs and quietly die out.
What is white
300
When viewed from above, looks like a pinwheel, with many long "arms" spiraling out from the centre core.
What is a spiral galaxy.
300
An unimaginably tiny volume of space suddenly and rapidly expanded into immense size.
What is the Big Bang Theory.
300
A spiral galaxy looks like a pinwheel from above.
What is True
400
A star is an object in space made up of hot gases with a core that is like a ___ reactor.
What is Thermonuclear
400
Intermediate stars expand into a ____.
What is a red giant
400
Astronomers now believe the whole universe contains at least ___ billion galaxies.
What is 125.
400
The universe is closed and there is enough matter in the universe through gravitational force, to slow and ultimately stop and reverse the expansion.
What is the Oscillating Theory.
400
The key factor that determines the life path of a star is it's mass.
What is True.
500
If a protostar collects enough dust and ___ , it's core will eventually reach 10 000 000 degrees Celsius.
What is gas
500
When a high mass stars collapses in on itself causing mass explosion
What is a supernova
500
A galaxy that ranges in shape from a perfect sphere to a stretched out ellipse.
What is an elliptical galaxy.
500
The ___ theory states that the universe will go through a matter of Big Bangs and Big Crunches in an ongoing cycle.
What is the Oscillating Theory.
500
The speed of moving galaxies is different depending on the galaxy being observed.
What is True.
M
e
n
u