Chapter 29.3 Flashcards
How many days does it take the moon to revolve around Earth?
27.3 days.
A complete lunar phase cycle take 29.5 days, what is this called?
a synodic month?
Do we ever see the back side of the moon?
No.
What causes a tide to rise or fall?
Gravitational pulls from the moon and sun.
What is the rise of sea level called?
High tide.
After the sea level rises how many hours does it take for the sea level to drop?
6 hours.
Which is farther from Earth, the sun or the moon?
the Sun.
Does the moon or the sun cause a greater effect on Earths tides?
the moon.
How are the sun, the Earth, and the moon aligned for Spring tide?
Sun, Earth, and moon are aligned in a straight line.
How are the sun, the Earth, and the moon aligned for a neap tide?
Sun, Earth, and moon are aligned in an L shape.
What does the phase of the moon you see depend on?
The positions of the moon,Earth, and sun relative to one another.
when does a new moon occur?
It occurs when the Moon is between the Earth and the sun.
How many phases of the moon are there?
8.
What is the definition of waxing phases?
When the illuminated portion that we see appears larger each night.
What is the definition of waning phases?
The illuminated portion becomes smaller as he nights go on.
What are the moon phase names?
New, waxing crescent, 1st quarter, waxing gibbous, full, waning gibbous, 3rd quarter, and waning crescent.
Where is the word month derived from?
German word derives from the word moon.
How is the Earth, moon, and sun aligned during a solar eclipse?
sun, moon, earth.
What is an umbra?
an Area of total eclipse, darkest portion of shadow from moon on Earth.
What is a penumbra?
partial eclipse. lightest part of shadow from moon on eart.
How is the Earth, moon, and sun aligned during a lunar eclipse?
sun, earth, moon.
How are the depressions on the moon formed?
meteorites, asteroids, and comets.
Are there mountains on the moon?
Yes.
Which side of the moon is thicker?
The far side.
Is the mantle of the moon a solid or liquid?
Solid.
What did the clementine spacecraft do?(2 things)
Confirmed the thickness of the moon and provided info of the mineral content of the moon rocks.
What did the Lunar prospector do?(3 things)
Took photos of moons surface, confirmed small iron rich core of moon, and presence of water ice on the moon.
What is the giant impact theory?
States a Mars sized object collided with Earth and debris was thrown into orbit which condensed into a large mass known as the moon.
