Moon is small and casts a small shadow on Earth. Lasts minutes.
20
During which lunar phase may the moon be “in between” the Earth and sun? NEW MOON What time would it be on Earth if you saw the eclipse? DAYTIME!
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Transcript of Moon is small and casts a small shadow on Earth. Lasts minutes.
During which lunar phase may the moon be “in between” the Earth and sun?
NEW MOON
What time would it be on Earth if you saw the eclipse?
DAYTIME!
Solar eclipse (sun disappears) is ONLY possible.
Lunar eclipse (moon disappears) is ONLY possible.
Moon is small and casts a small shadow on Earth. Lasts minutes.
Which phase?
Earth is large and casts a
large shadow on the moon.
Can last an hour or more.
Why is there not an eclipse every
month?
There is about a 5o angle, which prevents a monthly eclipse!
The diagram shows the position of the Sun, Moon, and Earth during a solar eclipse. The full shadow (umbra) and partial shadow (penumbra) are shown.
Which diagram best represents the appearance of the Sun and the Moon to an observer located
within the umbra of the Moon’s shadow on Earth’s surface?
Tides occur on a daily basis.
!
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High to low tide about every 6 hours!
The moon pulls ocean water into a bulge. We rotate through the tidal
bulge at about 15o/hr.
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High to low tide about every 6 hours!
The moon pulls ocean water into a bulge. We rotate through the tidal
bulge at about 15o/hr.
High to High tide about every 12 hours!
Because of complex motions and the shape of the shore, tides are not
exactly every 6 hours…
As the moon revolves around Earth, the tidal bulge follows.
The Sun also pulls water on Earth, but moon has a greater effect because it’s
closer.
Every 15 days
moon and sun
pull together…
higher SPRING tides.
Every 15 days
moon and sun pull
opposite ways…
lower NEAP tides.
Phases?
Phases?
What if a hurricane came ashore when we were in a Spring Tide & the moon was closest
in its elliptical orbit around Earth…
Hurricane Sandy
The diagram below shows the Moon orbiting Earth as viewed from space above the North Pole. The Moon is shown at eight different positions in its
orbit.
At which two positions of the Moon will tides be the highest for the month?
(1) 1 and 5 (3) 3 and 7
(2) 2 and 6 (4) 4 and 8
