What happens when an equinox occurs? (An Equinox happens twice a year, March 21st and September 21st. What happens on these days?)
Sunlight shines equally on the Northern and Southern Hemispheres. Half of each hemisphere is lit and the other half is in darkness.
Both hemispheres will have the same amount of daylight and darkness.
100
During this phase, the moon is not visible at all from Earth.
New Moon
100
What is it called when one object in space casts a shadow onto another.
Eclipse
100
What are the four seasons?
Spring, summer, fall, winter
200
The time it takes Earth to complete one rotation
One day or 24 hours
200
What happens when a solstice occurs? (A solstice happens on June 21st and December 21st. So what happens on these days?)
The area of sunlight is at a minimum in one hemisphere and a maximum in the other hemisphere.
200
During this lunar phase, the moon is fully illuminated.
Full Moon
200
Name the two types of eclipses.
Solar and lunar eclipses
200
What body in space does the Earth revolve around?
What revolves around the Earth?
1.Sun
2. the Moon
300
When half of the Earth is facing the sun it is called...
daytime
300
If the Earth were not this shape, all parts of the Earth would receive the same amount of sunlight all the time.
What shape is the Earth?
sphere
300
To decrease gradually in size. The illuminated part of the moon is becoming smaller.
Waning
300
Draw an example of each eclipse.
lunar - sun, earth, moon
solar - sun, moon, earth
300
How long does it take Earth to complete one revolution around the sun?
365 1/4 days or 1 year
400
When half of Earth is facing away from sun it is called...
nighttime
400
The Earth revolves around _____. If Earth stayed in one place, we wouldn't have different parts of Earth facing the sun at different times. Therefore, there would be no ________ in seasons.
1.the sun 2.change
400
To increase gradually in size. The illuminated part of the moon is becoming bigger.
Waxing
400
During this type of eclipse the sun's light is is completely blocked by the moon.
Solar Eclipse
400
What are the daily changes in the level of ocean water called?
Tides
500
The motion of an object in space around another object in space.
revolution
500
Earth's tilt on its ________ is a reason for the different seasons. Depending on which side of the Earth is tilted toward ________, different amounts of sunlight shine at different times in the year.
1.axis 2.the sun
500
How long does it take for the moon to complete its orbit around the Earth?
29.5 days or 1 month
500
During this type of eclipse the moon moves completely into Earth's umbra. The moon is not visible from Earth.