ScienceAst 2
Please enter something

Ast 2

Heidi Sanchez avatar Heidi Sanchez
25 July 2022
4.7 (114 reviews)
22 test answers

Unlock all answers in this set

Unlock answers (18)
question
What phrase must the moon be in during a solar eclipse?
answer
New moon. A solar eclipse can only occur during a new moon, when the moon lies between the sun and earth.
question
Must phase must the moon be in during a lunar eclipse?
answer
Full moon. A lunar eclipse can occur only during a full moon, when the moon and sun are on opposites side of earth.
question
How much time must pass between one solar eclipse and another?
answer
About 6 months. Because there are two eclipse seasons each year, solar eclipses come about 6 months apart. Of course, most of these solar eclipses are partial rather than total, and each one can be seen only over a relatively small region of Earth's surface.
question
Is the angular size of the moon always big enough to cover up the sun during an eclipse?
answer
No. The moon is occasionally far enough from the earth that it's angular size is smaller than that of the sun.
question
When are annular eclipses observed?
answer
When the moon is relatively far from the Earth. When the moon is far from earth, it appears to be smaller and covers up less of the sun.
question
Suppose the Suns angular Rays were 0.550 degrees, rather than 0.531. Would solar eclipses ever be total?
answer
No, only annular eclipses would be seen. The angular size of the moon is always less than 0.550 degrees, so it would never be able to block the entire sun.
question
In order to see a total solar eclipse from earth, you must be
answer
In the umbra. The umbra is defined as the dark inner portion of the moon's shadow.
question
In order to see a partial solar eclipse from earth, you must be
answer
In the penumbra
question
Which part of the earth's shadow covers more of the earth's surface?
answer
The penumbra
question
How large is the region on earth in which you must be located to view a total lunar eclipse?
answer
The eclipse is visible from the entire night side of earth.
question
Where does the moon have to be for a total lunar eclipse to occur?
answer
In the umbra. The umbra is the region of the shadow in which the sun is completely blocked from vie. The moon does not become completely dark, however, because earths atmosphere bends some sunlight so it still hits the moon.
question
Can a lunar eclipse be observed during the day?
answer
No. A full moon is only visible in the sky at night.
question
In which part of the earth's shadow is the moon during a partial lunar eclipse?
answer
Partly in the umbra, partly in the penumbra. The part of the moon in the umbra will be quite dark compared to normal during full moon. The part in the penumbra is darkened so slightly that it the change is barely noticeable there.
question
While you are watching a total lunar eclipse on earth, an astronaut is standing on the near side of the moon. What would the astronaut see?
answer
Earth completely blocking the sun. The earth's shadow stops any sunlight hitting (or the astronaut) during a total lunar eclipse.
question
For any particular Location on earth, why are lunar eclipses observed more frequently than solar eclipses?
answer
The moon's shadow covers only a small portion of the Earth.
question
Why doesn't a lunar eclipse occur every month?
answer
Sometimes the moon is above or below the earth's shadow during a full moon.
question
During an annular solar eclipse
answer
The moon is too far away from the earth to block the entire sun.
question
While an observer on earth sees a total solar eclipse, an astronaut is on the near side of the moon. What would the astronaut see?
answer
The earth's day side with a dark spot moving across it.
question
Suppose the moon were three times smaller than it really is, but it's distance from the earth remained the same. Which type of eclipse would never occur?
answer
Total solar eclipse.
question
If the moons orbit were not tilted with respect to the ecliptic, solar eclipses would occur
answer
Once a month.
question
If a person were standing in the moon's penumbra during a solar eclipse, he/she would see:
answer
The sun with a portion of it blocked by the moon
question
If you are watching a lunar eclipse in which the moon is in earth's penumbra, you will see:
answer
The entire moon, but slightly dimmer than normal