9.1 Flashcards
1
Q
Summer solstice
A
The longest period of daylight on earth in northern hemisphere is June 20-22
Represents the start of summer
2
Q
Winter solstice
A
Represents the shortest period of daylight in the year and the start of winter
3
Q
Equinox
A
Two days annually where the hours of daylight and the hours of night are equal in length
4
Q
Orbital radius
A
A planets distance from the sun
