Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
7 Cards in this Set
- Front
- Back
|
Nuclear fusion
|
The process by which two or more small nuclei fuse to make a bigger nucleus
|
|
|
Nuclear fission
|
The process by which a large nucleus is split into smaller nuclei
|
|
|
Critical Mass
|
The amount of isotope necessary to sustain a chain reaction
|
|
|
Absolute magnitude
|
The brightness of a star, corrected for distance on a scale of -8 to +17. The smaller the number, the brighter the star
|
|
|
Apparent magnitude
|
The brightness of a star as seen in the night sky. the smaller the number the brighter the star
|
|
|
Light year
|
The time it takes for light to travel in a straight line in one year
|
|
|
Galaxy
|
a large ensemble of stars, all interacting through the gravitational force and orbiting around a common center
|
