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33 Cards in this Set

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  • Back
What determines how much of the Moon you see on a clear night?
Where the Moon is in its orbit
When the northern and southern hemispheres receive the same amount and direction of sunlight, what season could it be?
spring or fall
About how many days are there between full moons?
30
For the moon to have a safe temperature for living things, what is the most important thing that would be needed?
atmosphere
What is the sun?
an averaged sized yellow star.
Revolution of the Earth takes
one year.
A _______ moon occurs when the moon is between the Earth and the sun.
new
As the Earth tilts toward the sun, the northern hemisphere is getting the most direct sunlight during which season?
summer
While the northern hemisphere has summer, the southern hemisphere has _____.
winter
How big is the sun?
110 times larger than the Earth.
_______ was the first person to suggest that the Earth revolves around the sun.
Copernicus
One complete orbit is called
a revolution
The surface of the moon is dented with
craters
What happens when the Earth passes through the moon's shadow?
solar eclipse
The moon is about _______ the diameter of the Earth.
1/4
About how far is the Earth from the sun?
93 million miles (93,000,000 miles)
An imaginary line through a spinning object is
an axis
The Earth is one of _______ planets.
Nine
The Earth is the _______ planet from the sun.
third
The time it takes for Earth to rotate on its axis is
one Earth day
The Earth's surface is active because _________ change the surface.
wind
water
volcanoes
earthquakes
The Earth's shadow causes the moon to get darker during a
lunar eclipse
Unlike the other four inner planets, Earth has large amounts of life-supporting _______ and _____.
oxygen, water
The Earth's _______blocks most of the sun's harmful rays.
atmosphere
One full spin of an object on its axis is called one
rotation
An object that revolves around another object is called a
satellite
The sun, the planets and their moons, and other objects that orbit the sun make up the
solar system
If you think like Aristotle and Ptolemy you believe
the Earth is the center of the solar system.
Who used one of the first telescopes to take observations of the solar system?
Galileo
What NASA missions helped us learn more about the moon?
Apollo
What planet is closest to the sun?
Mercury
Which planet is not an inner planet?
Neptune
Of the following planets, which planet is closest to the sun: Uranus, Saturn, Jupiter, or Venus
Venus