Earth's Motion Flashcards
1
Q
Ecliptic
A
Plane where all the planets orbit
2
Q
Perihelion
A
Point closest to the sun (January)
3
Q
Aphelion
A
Point farthest from the sun (August)
4
Q
Seasons
A
Divisions of the year marked by weather patterns
5
Q
Axial tilt
A
Angle between objects rotational axis + orbital axis
6
Q
Earth’s axial tilt
A
23.5 degrees
7
Q
Equinox
A
Perpendicular to sun (12h day and night)
8
Q
Solstice
A
When the sun reaches its highest/lowest point in the sky (longest/shortest days of the year
9
Q
Parallax
A
Star’s movement against the background of other, farther stars
