32 terms

Chapter 20

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Terms in this set (...)

Revolution
the motion of one object around another. Earth revolves around the Sun
Rotation
a spinning motion, Earth spins on its axis. (counter clockwise)
Rotation Axis
a line on which an object rotates
Solstice
day when Earth's rotation axis is the most toward or away from the sun
equinox
a day when Earth's rotation axis is leaning along Earth's orbit neither toward nor away fromthe Sun.
How does the tilt of Earth's rotation affect Earth's weather?
It affects how much direct sunlight we get.
What produces Earth's revolution around the sun?
The Sun's gravity.
What caurses the Sun's apparent moveent across the sky?
The rotation of Earth on its Axis.
Compare and Contrast rotation and revolution.
Compare:
1. Both make circular motions. 2.

Contrast:
1. Revolution takes longer than a rotation. 2. Rotation is like spinning and revolution is more like walking in circles around a house.
Why is Earth warmer at the Equator than at the poles?
There is more direct sun light hitting the Equator than hitting the poles.
Rays
bright streaks around craters
crater
bowl shaped dip from space
Maria
dark flat areas that formed from lava hardening
Phase
portion of the moon lit up by the Sun
Waxing Phase
increasing light on the Moon
*Right side lit up*
Waning Phase
decreasing light on the moon
*Left side lit up*
Entire lunar cycle
Waxing cresent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning cresent, new moon
New moon
There is no light on the moon it is dark
Earth-- Moon-- Sun in a line
Full Moon
the moon is entirly lit up
Moon-- Earth-- Sun in a line
How were maria produced?
By volcanos on the Moon and filling in areas with lava.
What produces the phases of the moon?
The positions of the orbis of the Moon and the Earth.
Umbra
Darkest part of a shadow. In the center of an Eclipse
Penumbra
Lighter part of a shadow (light is partially blocked) On the sides or outside of the umbra........ (eclipse)
Solar Eclipse
happens durring the day the sun is blocked by the moon
the moon's shadow appears on Earths surface
Lunar Eclipse
Moon moves into Earth's shadow happens durring the night and can be seen anywhere that the moon is seen
Tide
Daily rise and fall of sea level.
Spring Tide
Full and new moon phase Earth-moon-sun lined up.
high tides higher than usual and low tides lower than usual.
Neap Tide
Sun-Earth-Moon line up form a right angle
high tides lower than usual low tides higher than usual
Why does a solar eclipse happen only during a new moon?
Thats when the Earth - Moon - Sun line up
When can a lunar eclipse occur?
Durring a full moon
Compare and contrast Lunar and Solar eclipse
Compare:
1.Both include the alinment of the Sun, Earth, and Moon. 2. Both include objects entering into another objects shadow.
Contrast:
1. In a Lunar Eclipse the moon is covered by Earth's shadow when in a Solar Eclipse the Sun is being covered by the shadow of the moon.2. Solar Eclipse happens durring the day when the Lunar Eclipse happens durring the night.
How do the Moon and the Sun affect oceans?
Their gravitational pulls on Earth work together and creat what the tide is like everyday.