Earth
Sun
Moon
This and That
Vocabulary
100
This causes the Earth's seasons.
What is the tilt of the Earth?
100
Galileo presented evidence for this idea.
What is that the Earth revolves around the Sun?
100
It takes this long for the moon to revolve completely around the Earth.
What is about a month?
100
This is the reason the moon appears the biggest in the night sky.
What is because it is closest to the Earth?
100
This is what the moon travels in around the earth.
What is an orbit?
200
These are two days of the year when the length of the day and night are equal.
What is the Vernal Equinox and the Autumnal Equinox?
200
The sun is a big fiery ball of gas called this.
What is a star?
200
Earth and the Moon have different gravitational forces because of this.
What are masses?
200
The summer solstice, or the day of the year with the most hours of daylight is in what month and day.
What is June 21st or 22nd?
200
As we see more and more of the lit part of the Moon, we say it is doing this.
What is waxing?
300
The Earth takes this long to revolve around the sun (Revolution).
What is 365 1/4 days?
300
Sunlight reflects off the moon to cause it to do this.
What is making the moon look bright or glow?
300
The apparent changes in the shape of the Moon are known as this?
What are Moon Phases?
300
When won object passes into the shadow of another object.
What is an eclipse?
300
This is the smaller shadow that forms during an eclipse.
What is an umbra?
400
When it is winter in the Northern Hemisphere, it is this in the Southern Hemisphere.
What is summer?
400
This occurs when the moon moves between the sun and the Earth, blocking some the the sun's light.
What is a "solar eclipse"?
400
During this process, the moon moves through the Earth's shadow, and cannot be seen for a short time.
What is a lunar eclipse?
400
This keeps the Earth and Moon in their orbits.
What is gravity?
400
As we see less and less of the lit part of the moon, we say that it is doing this.
What is "waning"?
500
The imaginary line that Earth rotates on is called this.
What is it's Axis?
500
This is how the sun's rays strike the Earth in the summer.
What is directly?
500
This phase is the phase in which the entire side of the moon is visible from the Earth.
What is the Full Moon phase?
500
The winter solstice, or the day of the year with the fewest hours of daylight, is on what day of each month?
What is December 20th or 21st?
500
This is the larger shadow that forms during an eclipse.
What is the penumbra?
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