Lesson 1 -Earth's Motion
What causes day and night?
Earth's rotation
During these phases of the moon, the moon appears more and more
waxing phases
What occurs when Earth's shadow falls on the moon?
Lunar Eclipse
Lunar Eclipses occur during which phase?
Full moon
Seasons on Earth are caused by
The tilt/point of Earth's rotation axis in relationship to its revolution around the sun.
Earth's rotation period is how long?
24 hours
Lava caused these to form on the surface of the Moon
Maria (Mare)
True or False: People in Earth's umbra can see a total solar eclipse.
False
Why can we see the moon during a total lunar eclipse?
Earth's atmosphere deflects some sunlight into the umbra allowing the moon to be visible
Since sunlight is most concentrated at the equator and more spread out at the poles, temperatures at the equator are...
warmer
Occurs in June in the northern hemisphere which is also the longest daylight hours of the year and where the sun appears to be the highest overhead
June/Summer Solstice
True or False: The moon's rotation and revolution are the same, 27.3 days. Therefore, we only see the near side of the moon.
True
Why don't solar eclipses occur at every new moon?
The Earth, Moon, and Sun only line up occasionally on the same plane.
What 2 phases occurs right before a new moon takes place?
Third quarter and waning crescent
Total solar eclipses last for about...
7 minutes
Earth's yearly orbit around the sun is known as its
revolution
We can see the moon because...
Sunlight reflects off of its surface
When a shadow of the moon appears on the Earth and is blocking sunlight, what is taking place?
Solar Eclipse
Neap tides occur during which 2 moon phases?
1st and 3rd quarter moons
What 2 phases occur during Spring Tides?
New Moon and Full Moon
An equinox is...
2 days of the year marking the 1st day of spring and fall and has about 12 hours of daylight and 12 hours of darkness.
The moon is believed to have formed in 3 steps, what are they?
1. A large object approximately the size of Mars slammed into Earth ~4.5 billion years ago.
2. The impact caused vaporized rock to cool and make a ring around the Earth.
3. The particles clumped together forming the moon.
Force that mostly causes Earth's tides...
The moon's gravity
The rise and fall of sea level that occurs about 4 times each day is known as...
tides
When the both hemispheres are either tilted most toward or most away from the sun, what is taking place?
A solstice