Solar Systems Flashcards
1
Q
Rotation
A
Spin on axis - day and night
2
Q
Revolution
A
Go around the sun - year
3
Q
Equinox
A
Equal hours of day and night
4
Q
Solstice
A
Longest or Shortest amount of daylight hours
5
Q
Perihelion
A
Closest to the sun
6
Q
Aphelion
A
Furthest from the sun
7
Q
Zenith
A
Straight up 90°
8
Q
Satellite
A
An object of orbit
9
Q
Lunar Eclipse
A
Moon gets dark
10
Q
Solar eclipse
A
Sun gets dark
11
Q
Umbra
A
Totally Dark
12
Q
Penumbra
A
Partially dark
13
Q
Geocentric
A
Earth Centered Solar System Model
14
Q
Heliocentric
A
Sun centered solar system model
15
Q
Ellipse
A
Oval shape - not a perfect circle
16
Q
Eccentricity
A
How flat is the circle
17
Q
Focus (foci)
A
Center points in an ellipse
18
Q
Terrestrial
A
4 inner planets - rocky - more dense
19
Q
Jovian
A
4 outer planets - gaseous - less dense
20
Q
Big Bang
A
Universe started from an explosion
21
Q
Red Shift
A
Moving away
22
Q
Blue Shift
A
Moving Towards
