Earth's Revolutions and Rotations
How long does it take Earth to complete one rotation?
24 hours (1 day)
About how many days pass from a waning crescent moon to a waxing crescent moon?
7 days
When the Earth casts a shadow on the moon.
Lunar Eclipse
The difference between high tide and low tide.
Tidal Range
You could use a model of the Earth, Moon, and Sun to best visualize...
The phases of the moon
How long does it take Earth to complete 1 revolution?
365.25 days (1 year)
During which moon phases are Earth's tides the lowest?
First quarter and Third (last) quarter
When the Moon casts a shadow on Earth.
Solar Eclipse
Ocean tides are caused primarily by...
The Moon's gravitational pull on Earth
Name three moon phases.
Full moon, first quarter, third quarter, crescent, gibbous
What can be seen in the day sky from Earth?
Moon and Sun
How many new moons are there in one month?
1
A lunar eclipse can only occur during what moon phase?
Full Moon
The tides occur at regular times because...
the pull of gravity from the Sun and Moon is consistent.
A neap tide occurs when the Earth, Moon, and Sun are...
At a 90* angle
What is the tilt of Earth's axis?
23.5*
Why do we only see one side of the moon?
Because it is tidally locked (rotates at the same rate it revolves)
The darkest part of an eclipses shadow is called the...
umbra
During what moon phases would the highest tide occur?
Full moon and new moon
What occurs at this alignment: Moon-Earth-Sun
Total Lunar Eclipse
On what day would the Northern Hemisphere have the longest day of sunshine?
Summer (June) solstice
How long is a lunar cycle? OR How long does it take for the moon to complete 1 revolution around the Earth?
29.5 days (about 1 month)
What can only happen when the moon is between Earth and the Sun in the same plane?
Solar Eclipse
Because the moon is closer to Earth than the Sun
During an annular eclipse, the moon is at its ______ point from Earth.
farthest