Show:
Earth's Seasons
The Moon
Eclipses
Tides
Miscellaneous
100
The imaginary rod around which the Earth rotates.
What is the Earth's axis?
100
A moon with less than half of it illuminated.
What is a crescent moon?
100
It happens only at night during a Full Moon.
What is a Lunar Eclipse?
100
These are caused by the gravitational pull of the moon.
What are tides?
100
When the portion of the moon you can see is shrinking.
What is waning?
200
This takes 24 hours to complete.
What is one rotation of the Earth (on its axis)?
200
When the sunlit side of the moon faces away from Earth.
What is a New Moon?
200
The darkest part of the shadow in an eclipse.
What is the umbra?
200
Two high and two low tides.
What are the number of high and low tides that occur each day?
200
This means "equal night."
What is equinox?
300
Date and name of when the sun's rays reach the greatest distance north of the equator.
What is the June 21st summer solstice?
300
When the left half on the moon is illuminated and the right half is dark
What is a 3rd Quarter Moon?
300
This type of eclipse happens when the moon passes directly between the Earth and sun.
What is a Solar Eclipse?
300
This occurs when the Earth, moon and sun are aligned and cause the highest tides.
What is a Spring Tide?
300
This type of eclipse happens only during a New Moon.
What is a Solar Eclipse?
400
The season when the northern hemisphere is tilted away from the sun's rays.
What is winter?
400
This takes 29 1/2 days to complete.
What is the lunar cycle?
400
Because the Earth's umbra is larger than the moon's umbra.
Why do lunar eclipses occur more often than solar eclipses?
400

The moon is closer to the Earth than the sun.

Why is the moon's gravitational pull stronger than the sun?
400
This takes 356 days to complete.
What is one revolution of the Earth around the sun?
500
The two days of the year when the sun's rays strike the equator directly.
What are the March 21st Spring or Sept 21st Fall Equinox?
500
Because the moon rotates once for every revolution around Earth.
What is the reason why we always see the same side of the moon?
500
This type of eclipse occurs when the moon passes directly behind the earth's shadow.
What is a Lunar Eclipse?
500
This is how the Earth, moon and sun are aligned during a neap tide.
What is at right or 90 degree angles?
500
Eclipses don't happen every month because of this.
W.hat is the tilt of the eon's orbit