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What is rotation of the earth?
The earth spinning on it's axis.
What direction does the Earth rotate?
counter clockwise (eastward)
How long does rotation of the Earth take?
24 hours.
What does rotation of the Earth cause?
Night & Day
If the Earth rotated slower what would happen?
The days would be longer.
The side of the Earth facing the sun is experiencing ?
Daytime
What causes the sun to appear to “rise” and “set”?
Because the earth rotates, the sun appears to rise in the east & set in the west.
What is revolution ?
The earth traveling around the sun
What is the direction of the Earth’s revolution?
The earth revolves counter clockwise.
How long does the Earth take to revolve around the sun ?
A year or 365 1/4 days or 365.25 days.
What does revolution of the Earth cause to happen?
Revolution causes years.
What two things cause the seasons?
The tilt of earth's axis & revolution of earth around the sun.
What would happen if Earth were not tilted on its axis?
There wouldn't be seasons.
What causes the hours of sunlight to change with the seasons?
The tilt of the earth's axis causing different parts of earth to receive more or less sunlight.
When it is fall in the Northern Hemisphere what season is it in the Southern Hemisphere?
Spring
Which two days of the year are the length of daylight hours and night hours the same?
Spring & Fall equinox
What is the winter solstice?
winter solstice is the first day of winter with the shortest amount of daylight.
Why do we always see the same side of the moon?
Because it takes the moon the same amount of time to rotate & revolve
What two things create the moon phases?
Reflection of sunlight & the moon revolving around earth receiving different amount of sunlight.
How long does it take to see all the moon phases?
Around 1 month 29.5 days
Approximately how long after the new moon will we have the first quarter moon?
Around 1 week
Approximately how long after the new moon will we have the full moon?
Around 2 weeks
Approximately how long after the new moon will we have the 3rd quarter moon?
Around 3 weeks
What is the alignment of the sun moon and Earth during the 1st and 3rd quarter moon phases?
90 degrees
What is the alignment of the sun, moon and Earth during the new and full moons?
In a straight line