Sun, Moon, Earth Flashcards
How long does it take the EARTH to make one revolution around the SUN?
365 days (1 year)
How long does it take the MOON to revolve around the EARTH?
1 month
Why does the EARTH experience seasons?
the TILT of the Earth on it’s axis (AXIAL TILT) causes seasons
How many PHASES of the MOON are there?
8
What are the PHASES of the MOON caused by?
The moon’s phases are caused by the moon’s position to the Earth & Sun (how close the moon is to the Earth & Sun)
List all of the moon phases!
New Moon
Waxing Crescent
First Quarter
Waxing Gibbous
Full Moon
Waning Gibbous
Last (Third) Quarter
Waning Crescent
An average-sized yellow star
Sun
How much BIGGER is the SUN than the EARTH?
110 times bigger in diameter
How old is the sun?
4.6 Billion years old
A small rocky sattelite
Moon
How much SMALLER is the MOON than the EARTH?
One quarter (1/25) smaller in diameter and one eightieth (1/80) smaller in mass
The MOON has extreme _____, almost no _________, and very little ________.
The MOON has extreme TEMPERATURE, almost no ATMOSPHERE/LIFE, and very little WATER
How many planets revolve around the SUN?
8
True or False:
Planets are part of the solar system, and help make up the solar system.
TRUE
The Earth is the _______ farthest planet from the SUN
3rd
The Earth is one of the four ______ inner planets.
Terrestrial (which means land)
How far away is the EARTH from the SUN (_______km - kilometers)?
150 million km (kilometers)
True or False:
Earth is a GEOLOGICALLY ACTIVE planet
TRUE! This means the Earth’s surface is constantly (always) changing!
Earth has large amounts of life-supporting _________ and an oxygen-rich________. The other 3 inner planets do not have this.
WATER & ATMOSPHERE
What is something special that Earth has that blocks out most of the SUN’s damaging rays?
PROTECTIVE ATMOSPHERE
We used to think of the solar system as a _______ centered model, but now we think of it as a ______ centered model.
We used to think of the solar system as a EARTH centered model, but now we think of it as a SUN centered model.
Who came up with the EARTH centered model of the solar system?
Aristotle and Ptolemy
Who came up with the SUN centered model of the solar system?
Copernicus and Galileo
The NASA ______ Missions helped us understand the moon much better.
APOLLO
