Final Exam Prep Flashcards
1
Q
What is the primary topic of the general theory of relativity?
A
The general theory of relativity is primarily a theory of gravity, stating that gravity arises from distortions of space-time.
2
Q
____ tells space-time how to curve, space-time tells ____ how to move.
A
Mass tells space-time how to curve, space-time tells matter how to move.
3
Q
What is spacetime?
A
Spacetime is the four-dimensional combination of space and time that forms the “fabric” of our universe.
4
Q
The four dimensions of spacetime consists of:
A
3D space + 1D time.
5
Q
What are the three possible geometries of spacetime?
A
The three possible geometries are:
- Flat geometry, in which the ordinary laws of flat geometry apply;
- Spherical geometry, in which lines that start out parallel tend to converge;
- a saddle-shaped geometry, in which lines that start out parallel tend to diverge.
