Unit 3: SEM Flashcards
(29 cards)
rotational axis
The line on which an axis rotates
Revolution
The motion of one object around another
Orbit
The path an object follows as it moves around another object
solstice
A day when Earth’s rotation axis is the most toward or away from the Sun
equinox
A day when Earth’s rotation axis is leaning along Earth’s orbit, neither toward nor away from the Sun.
What day is the December/ Winter Solstice on?
It is on December 21 or 22.
What end of the Earth’s rotation axis is away from the Sun during the December/ Winter Solstice?
The north end / The Northern Hemisphere
What season has days in the Northern Hemisphere being shortest while nights are longest?
Winter
What season has days in the southern hemisphere being longest while nights are shortest?
Summer
What season begins for the Northern Hemisphere on the December Solstice?
Winter
What season begins for the Southern Hemisphere on the December Solstice?
Summer
During the Winter Solstice, does the Northern hemisphere receive less sunlight than the Southern?
True; It does.
What day is the September equinox on?
September 22 or 23
What day does the north end of Earth’s rotation axis lean along Earth’s orbit?
September Equinox
Are there 12 hours of daylight and 12 hours of darkness everywhere on Earth on the September Equinox?
True. It is the one of the only days they are about equal in time.
What season begins in the northern hemisphere during the September Equinox?
Autumn begins
What season begins in the southern hemisphere during the September Equinox?
Spring begins
What day is the March Equinox on?
March 20 or 21
Does the north end of Earth’s rotation axis lean along the Earth’s orbit on the March Equinox?
True
Is the days shortest during the March Equinox, while the nights are longest?
False. Everywhere on earth, there is 12 hours of daylight and 12 hours of darkness.
What season begins on the northern hemisphere during the March Equinox?
Spring
What season begins on the southern hemisphere during the March Equinox?
autumn
What day is the June Solstice on?
June 20 or 21
Is the North end of Earth’s rotation axis away from the Sun during the June Solstice?
False; it is towards the sun.