The Calendar, TIme Zones, and Seasons, and Eclipses Flashcards
How do we base 1 day’s time?
Days are based on the Earth’s rotation on its axis.
-when the earth rates all the way around = 1 day.
How do we determine a month’s time?
Months are based on the Moon’s revolution around the Earth. Moon revolves all the way around Earth = 1 month more or less.
What are years based on?
The Earth’s revolution around the sun. One full trip around the sun = 1 year.
How do timezone’s work?
No matter where you are on Earth, when the sun is directly overhead= noon = 12:00 = Zenith point
-you don’t need to know all the timezones, just the concept of them. You divde them up, lines run up and down. As you head East, it gets later. (why its later in NY)
How do seasons work?
Seasons are caused by the Earth’s tilt on its Axis. As it revolves around the Sun, the tilt (doesn’t change much) but it causes each hemisphere to receive more direct exposure at certain times in its orbit. the orientation of it changes.
When the northern hemisphere is pointed away from the sun, what season is it?
winter
When the northern hemisphere is pointed towards the sun, what season is it?
it is summer
Summer solstice is the _______ day of the year
longest
Winter solstice is the _______ day of the year
shortest
Spring is in the north and autumn is in the south during..
March Equinox
When is summer in the north and winter in the south?
June solstice
When is the winter in the north and summer in the south?
december solstice
When is autumn in the north and spring in the south?
September Equinox
Eclipses occur when what happens?
When the shadow of the Earth or the Moon is cast onto the other body.
During a lunar eclipse..
..the Moon and the Sun are on opposite sides of the Earth. The sun is blocking the moon.
