29.1 Flashcards
1
Q
sphere
A
a round three dimesion objects the surface of which is the samedirection
2
Q
ellipse
A
is an elogated, closed curve with two foci
3
Q
what are 2 factors that effect graviational strength?
A
masses and denses
4
Q
which diameter is longer in distance?
A
equator
5
Q
what does eath’s magnetic field protect earth from?
A
harmful radiation from the sun
6
Q
what degrees does earths axis tilt?
A
11.7
7
Q
what is the name of the large scale movement where the magnetic pole switched?
A
magnetic reversals
8
Q
how often do they occur?
A
200,00 years
9
Q
which part of earths magnetic field deflects harmful radiation from the sun?
A
magnetosphere
