Moon
Orbit
Orbit
What natural phenomenon occurs when the moon is visible at certain points of the Earth.
A. The passing of a year
B. The changing of day to night
C. The changing of the seasons
D. The changing of the tides.
The changes of the tides
Why is the New Moon not visible on Earth?
The moon is between the earth and the sun, and the moon casts a ahadow on the earth when the sun's rays hit the moon
How many high tidea and low tides are there per day?
Two high tides and two low tides
What is the angle of the earth's tilt about its axis?
23.5
In which direction does the moon orbit around the earth?
Counterclockwise.
What is the second phase of the lunar cycle?
Waxing crescent
What is the difference between spring tides and neap tides?
Spring tides involve unusually high tides. Neap tides involve unusually low tides
What is the difference in terms of definition between the earth's rotation and the earth's revolution?
The earth's rotation is about its own.axis which takes 24 hours. The earth's revolution around the sun takes 1 year.
Why is a lunar eclipse or a solar eclipse not more commonly observed?
The moon's orbit around the earth is tilted.
During which two phases is half the moon visible on earth?
The first and third quarter.
During which two parts of the lunar cycle will neap tides occur?
During the first and the third quarter.
Would the gravitational force between the sun and the earth be lower or higher if the distance between the earth and the sun were greater?
lower
Why is there still a pull of gravity from the sun on the moon?
Although the moon orbits around the earth, the earth orbits around the sun.
It takes this many days for the moon to complete it's phases.
28-29.5 days
During which two parts of the lunar cycle will spring tides occur?
The full moon and the new moon
Why does the moon appear red during a lunar eclipse?
Red rays from the sun bend as it approaches the moon
Why is the gravitatonal force from the Moon and the earth the same throughout the moon's entire orbit?
Neither the masses of the moon and earth change, nor the distance between the moon and earth.
What moon phases are associated with the highest tides?
New and Full
Why is the spring tide an unusually high tide?
The gravitational force from both the moon and the sun are stronger on the earth's oceans.
Why is a partial solar eclipse more common than a total solar eclipse?
The penumbra is a larger portion of the shadow cast than the umbra