Earth, Moon, and Sun Relations
Lunar Phases/Cycle
Lunar Eclipse
Solar Eclipse
Vocabulary
100
Earth spins on its axis and at the same time, revolves around the sun.
What is Earth's orbit?
100
New Moon
What is the first phase in the moon cycle?
100
When the moon moves through Earth's shadow.
What is a lunar eclipse?
100
When the moon is directly between the Earth and the Sun.
What is a solar eclipse?
100
One body that revolves around a larger body.
What is a satellite?
200
A body that orbits Earth is the moon, this is also know as Earth's what?
What is Earth's satellite?
200
A waxing moon appears to grow each day because the sunlight on the moon increases on the right side.
What causes waxing moon phases to grow?
200
Sunlight streams past Earth to produce a new moon.
What happens before a lunar eclipse?
200
When the shadow of the moon falls on part of the Earth.
What causes a solar eclipse?
200
A force that pulls objects towards one another depending on their masses. The greater the mass, the greater this force.
What is gravity?
300
Earth revolves around the sun, as the moon revolves around Earth.
What is the Earth and Moon's orbit of the sun?
300
Waning moons appear to shrink because the sunlight reflected off the moon decreases.
What causes Waning moon phases to shrink?
300
The moon is in complete darkness because it fits entirely within Earth's umbra.
What happens when Earth's umbra covers the moon?
300
When the sun's light is completely blocked by the moon.
What is a total solar eclipse?
300
A celestial objects casts a shadow on another celestial object.
What is an eclipse?
400
Earth's gravity keeps the moon orbiting Earth.
What is the cause of Earth's satellite?
400
When more of the moon is visible(greater than half) in a given week. This phase occurs before and after a full moon.
What is a gibbous phase?
400
When an hour or more passes, the moon moves slowly out of Earth's umbra, and back into sunlight streaming past Earth.
When does a lunar eclipse regress?
400
The area directly in line with the moon and the sun.
Where does the umbra lie on Earth?
400
An umbra is the darkest part of a shadow, and the penumbra is the area of a shadow that surrounds the penumbra.
What is the difference between an umbra and penumbra?
500
We see the moon on Earth because the moon reflects sunlight received by the sun.
Why is the moon visible from Earth?
500
The time it takes for the moon to complete one rotation, is also the time it takes for the moon to complete one revolution(29 days)
What is the relation between the moon's rotation and revolution?
500
The moon's orbit around the Earth is tilted 5 degrees relative to Earth's orbit around the sun.
Why don't we see lunar eclipses every month?
500
The part of the umbra that strikes Earth never exceeds more than several hundred km across.
What is the result of the moon's umbra being too small to make a large shadow on Earth's surface?
500
A counter clockwise revolution of the moon around the sun, where the sun strikes the moon at varying degrees. This difference in sunlight causes the following cycle: new moon, waxing crescent, 1st quarter, Waxing gibbous, Full moon, waning gibbous, 3rd quarter, waning crescent, and back to new moon.
What are all of the lunar phases?
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