The Universe Flashcards
Star
Deffinition
A body of burning gas in space
Nebula
Deffinition
A cloud of dust and gas in space. It acts as a nursery where new stars are born
Cluster
Deffinition
Collections of galaxies bound together by gravity
moving together in space
Galaxy
Deffinition
A huge collection of gas, dust, and billions of stars and their solar systems
Constellation
Deffinition
A group of stars that are imagined to have a connection and form an image
Hypothesis
A proposed explanation for further investigation
Critera for Accepted Scientific Theory
- Explain all relevant, known, facts
- Be published in a scientific journal
- Been tested by other scientists (peer reviewed)
Theory
Tested ideas that are commonly regarded as correct.
Must be verified by many scientists
No evidence to prove it wrong
Nursery
A place where (stars) are formed and grown. It contains all the resources the star needs to grow.
Dense
The mass per unit volume of an object
D = M/V
Mass (in Physics)
The amount of matter an object contains
Fuse (verb)
Join together physically or chemically. This is usually two + things becoming one thing
Gravity
The force that attracts all objects of matter towards eachother
Shed (verb)
To get rid of, or expel
Black hole
A region of spacetime with gravity so strong that nothing has enough energy to escape. Formed by a dying star with a large mass, anything near a black hole will be drawn in permanantly
