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Autumnal Equinox September 21st
Characteristics of Inner Planets 1. Close to the Sun 2. Small Size 3. High Density (Rocky) 4. Slow Motion 5. No Rings 6. Few Moons
Characteristics of Outer Planets 1. Far from the Dun 2. Large Size (99.5%) 3. Fast Rotation 4. Low Density (Gaseous) 5. Many Moons 6. Rings
Does Earth's shadow have effect on the moon's phases? No.
Does the direction of the tilt stay the same? Yes, it does not change.
Does the same side of the moon always face Earth? Yes.
Ecliptic? Only occurs when the moon crosses Earth's orbital plane.
Equinoxes Equal amounts of day and night.
First Quarter This means the moon is 1/4 through its cycle and we see half of the moon's disc lit on the right side.
Full Moon This means the moon is 1/2 through its cycle; and it appears fully lit.
How do you make an Earth shadow? The Earth, Sun, and Moon have to line up in a straight line.
How much of the moon's surface is always lit? Half.
New Moon This means that a new 4 week cycle of phases is starting and we are looking at the half of the moon that is in the shadow; so we can't see the moon.
Solstices Longest and shortest days of the year
Summer in relation to sunrise and sunset The Sun rises more North of East and sets more North of West, it spends more time in the sky; the days are longer.
Summer Solstice June 21st
Third Quarter This means that the moon is 3/4 through its cycle, and the shadow appears to cover the right half of the disc.
Vernal Equinox March 21st
Waning Crescent This means that more of the moon's face appears in shadow than is lit, and the crescent appears on the left side.
Waning Gibbous This means that we have less than the full face of the moon visible, with a shadow, but less than half.
Waxing Crescent This means that we see more of the moon's face appearing on the right out of shadow, but less than half
Waning Gibbous This means that more than half of the moon's face appears lit, but not all of it.
What are seasons caused by? They are caused by the tilt of the Earth's rotation axis.
What degree of tilt is the Earth? 23.5 Degrees
What happens to the sunlight because of the tilt? Some parts of the Earth get more sunlight than others depending on the time of year.
What kind of shadow does a high Sun cause? A shorter shadow.
Where does Earth's shadow usually fall? Into open space because they do not usually line up in a straight line.
Which direction do all the planets rotate but Venus? Counterclockwise
Which direction does Earth spin? Counterclockwise
Which direction does Venus spin? Clockwise
Which direction do all the planets revolve around the Sun? Counterclockwise
Which part of the Moon is the Sun always located? The side of the Moon that is always lit.
Which side of the Moon does the light increase from? The right side.
Why can we on Earth see different amounts of the Moon? Because of the angle of the moon.
Why is the moon usually above or below the Earth? Because the Moon's orbital plane is inclined to the Earth's orbital plane.
Winter in relation to the sunrise and sunset The Sun rises more South of East and sets more South of West; it spends less time in the sky, and the days are shorter.
Winter Solstice December 21st
Created by: Pel89