Tides, Moon Phases, And Eclipses Study Guide Flashcards
The gravitational pull of the moon and sun…
Causes All Tides
A tide is defined as
the periodic rise and fall of the ocean surface due to the gravitational pulls of the moon and sun.
A Neap Tide is defined as
A tide just after the first or third quarters of the moon when there is the least difference between high and low water.
What are tides?
The periodic rise and fall of the level of water in the ocean.
A half Moon that’s waxing, causing a Neap Tide
1st Quarter
A half Moon that’s waning, causing a Neap Tide
3rd Quarter
A Spring Tide is defined as
the periodic rise and fall of the ocean surface due to the gravitational pulls of the moon and sun.
When the moon is waxing, what is it doing?
Getting Bigger
What causes the phases of the moon?
The Moon revolving around the Earth.
How long does it take the moon to revolve around the Earth and complete all its phases
About 29 Days
When the moon is between the Earth and the sun we will see a ______ moon
New Moon
A lunar eclipse is most likely to occur when…
Earth is located between the sun and the moon.
From Full moon to New Moon you see
a decreasing amount of the lighted side of the moon
Where a person has to be to see a total eclipse?
In the umbra
What is a solar eclipse?
When the moon passes between the Earth and Sun.
What is a lunar eclipse?
When the Earth passes between the Moon and Sun.
moon phase required for a lunar eclipse
Full Moon
What is the position of the Earth, Moon, and Sun during a lunar eclipse?
Sun - Earth - Moon
A lunar eclipse happens when the shadow of the _____
Earth passes over the Moon
What is the position of the Earth, Moon, and Sun during a solar eclipse?
Sun - Moon - Earth
moon phase required for a solar eclipse
new moon
why we do not have a lunar and solar eclipse twice a month
the Moon is tilted 5 degrees in its orbit so the Earth and moon do not line up exactly very often
What is an “annular” eclipse?
An eclipse in which only the sun’s edge of the sun remains visible as a bright ring around the moon.
Why don’t they happen every month?
The moons orbit is tilted, and doesn’t always get in the shadow.
