L4 Flashcards
t/f: the moon rotates on its axis the same way as earth
true
Why does the same side of the earth always face earth?
Because the moon takes as long to revolve as it does to rotate
Why does the moon change appearance?
its position relative 2 the sun and earth changes
What do we call the periodic changes in the shape of the moon?
moon phases
What are the 8 phases of the moon ?
- New moon
- waxing crescent
- 1st quarter
- waxing gibbous
- full moon
- waning gibbous
- 3rd quarter (last quarter)
- Waning crescent
What is an eclipse?
the partial or total blocking of 1 object in space by another
What are the 2 types of eclipses
solar and lunar
What is a solar eclipse?
the blocking of sunlight to Earth tha occurs when the moon is directly between the sun and earth
What is the very darkest part of the moon’s or earth’s shadow?
the umbra
What shape is the umbra?
cone-shaped
Only people withing the _________ experience a total solar eclipse
umbra
during a solar eclipse, the moon casts another shadow that is less dark than the umbra. It is larger and is called the penumbra. In the penumbra, part of the sun is visible from Earth and people see a _______ solar eclipse.
partial
a lunar eclipse occurs at a _____ moon.
full
A _______ eclipse occurs when earth is directly between the moon and the sun
lunar
a _______ lunar eclipse occurs when the moon travels completely into the earths umbra.
total
