Physical Science Flashcards
Irregular
No particular shape
Elliptical
Little gas or dust and round in shape
Spiral
Made of gas, dust and stars
Fission
Separation of elements to form two different elements
Fusion
Combining elements to form another element
Where do stars get their energy from?
Nuclear Fusion
Light year
Distance that light travels in one year
How are stats formed?
Clouds of dust,gas, and nubulas.
How many stars can the naked eye see?
6,000
Sun
Has a balance of inward and out ward forces
White dwarf
When the sun is late in its life cycle and starts to become a dead star or a white dwarf.
When does a star begin to die?
After about 25% conversion of hydrogen to helium
Why do stars appear different than other stars?
There at different stages in there life cycles
When does nuclear fusion occur?
Converting hydrogen to helium
Black holes
Compressed super nova that have very large mass with very little radius.