Chapter 3 (cont.) Flashcards
Which type of eclipse may be visible to all the people on one side of Earth?
a total lunar eclipse
What part of the sun is visible during the “peak” of a total solar eclipse?
corona and chromosphere
If the moon is at one of its nodes, it must be which of the following?
on the ecliptic
A total lunar eclipse occurs when the moon is which of the following?
near the ecliptic and at full phase
A total solar eclipse occurs when the moon is which of the following?
at new phase and near the ecliptic
Look at the Phases of the Moon diagram and visualize yourself on Earth looking at the moon.
Which lunar phase would set in the western sky at dawn?
full
Look at the Phases of the Moon diagram and visualize yourself on Earth looking at the moon.
Which lunar phase would rise in the eastern sky at dusk?
full
Look at the Phases of the Moon diagram and visualize yourself on Earth looking at the moon.
Which lunar phase would rise in the eastern sky at noon?
first quarter
Look at the Phases of the Moon diagram and visualize yourself on Earth looking at the moon.
Which lunar phase would rise in the eastern sky at midnight?
third quarter
Imagine you’re an astronaut standing on the moon and looking back at Earth.
What phase would Earth have when the moon is full as seen by an Earth observer?
new
What phase would Earth have when the moon is new as seen by an Earth observer?
full
What phase would Earth have when the moon is at first quarter as seen by an Earth observer?
third quarter
What phase would Earth have when the moon is a waxing crescent as seen by an Earth observer?
waning crescent
Imagine you are on another planet observing its moon.
If the moon orbited the planet in an eastward direction and the planet rotated in the same direction, which of the following is true?
You would see the full moon overhead at midnight.
Imagine you are on another planet observing its moon.
If the moon orbited the planet in a westward direction, but the planet rotated in an eastward direction, which of the following is true?
You would see the last quarter moon overhead at sunrise.
Imagine you are on another planet observing its moon.
If the moon orbited the planet in less than a synodic month, which of the following is true?
It would display the same phases as Earth’s moon, but cycle through them in less time.
Imagine you are on another planet observing its moon.
Imagine that instead of an orbit about the planet’s equator, the moon’s orbit passed over both of the planet’s poles.
The moon would always appear in a quarter phase.
A solar-powered spacecraft passed through Earth’s shadow.
In the outer part of the shadow, the penumbra, what does the spacecraft generate?
some electricity, because it is getting some sunlight, but less than when it is not in Earth’s shadow
A solar-powered spacecraft passed through Earth’s shadow.
In the inner part of the shadow, the umbra, what does the spacecraft generate?
less electricity than when in the outer (penumbral) shadow and much less than when it is not in Earth’s shadow.
A solar-powered spacecraft passed through Earth’s shadow.
In the outer part of the shadow, the penumbra, what does the spacecraft generate?
more electricity than in the umbra
Draw the Earth’s and moon’s umbral and penumbral shadows onto a diagram.
In order to be covered by Earth’s shadow, the moon is in which of the following phases as seen from Earth?
full
Draw the Earth’s and moon’s umbral and penumbral shadows onto a diagram.
In order to block out the sun, the moon is in which of the following phases as seen from Earth?
new
Draw the Earth’s and moon’s umbral and penumbral shadows onto a diagram.
In order to cast a shadow on Earth, the moon is in which of the following phases as seen from Earth?
new
Draw the Earth’s and moon’s umbral and penumbral shadows onto a diagram.
From a position on Earth in the moon’s penumbral shadow, an observer will see a moon phase where the sun is partially covered by a _____ moon.
new
