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48 Cards in this Set

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revolution
Movement of an object in an orbit around another object.
Which planet:
is eighth from the sun
is pale blue in color
is a large, cold planet
Neptune
How many planets are in our solar system?
nine
Which planet:
is fourth from the sun
is called the red planet
has two moons
Mars
Tell the planets in our solar system in order.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
What are the 4 phases of the moon?
New Moon
Cresent Moon
Half Moon
Full Moon
What are the four seasons?
winter, spring, summer, fall
Which planet:
is third from the sun
has air
supports life
Earth
satellite
an object that revolves around another object.
The ___ is covered in rocks and dust.
a. moon b. planet c. sun
moon
The rise and fall of the ocean, mainly because of the moon's gravity.
Tide
The energy from the sun lights and warms the earth.

True or False
True
movement of an object in an orbit around another object.
revolution
Which planet:
is the fifth planet from the sun
is the biggest planet
is a large ball of gas
Jupiter
To spin on an axis.
Rotation
The ____ is full of craters, mountains and valleys.
a. moon b. planet c. sun
moon
The tilting of Earth's axis and its revolution around the sun causes ___.
a. the tides b. the seasons c. the weather
the seasons
_____ are cooler spots on the sun than the areas surrounding them.
a. bright spots b. sunspots
sunspots
How long does it take Earth to make one complete revolution around the sun?
a. one day b. one year
one year
____, also called flares, have a temperature hotter than the surface of the sun.
a. bright spots b. sunspots
bright spots
The path an object follows as it moves around another object.
Orbit
Which planet:
is the sixth planet from the sun
is a giant ball of gas
has 18 moons and many rings
Saturn
The sun, the planets and their moons, and other objects that move around the sun.
solar system
Earth moves around the moon.
True or False
False. The moon moves around Earth.
An object that revolves around another object.
satellite
There are ___ phases of the moon.
a. 2 b. 4 c. 6
4
An imaginary straight line through the center of Earth around which Earth rotates.
Axis
The ______ produces energy in its center.

a. moon b. planet c. sun
sun
How long does it take Earth to make one complete rotation around the sun?
a. one day b. one year
one day
solar system
the sun, the planets and their moons, and other objects that move aorund the sun.
Which planet:
is seventh from the sun
looks blue-green in color
lies on its side
Uranus
Axis
An imaginary straight line through the center of Earth around which Earth rotates.
Which planet:
is ninth from the sun
is the farthest planet from the sun
is the smallest planet in our solar system
Pluto
Orbit
The path an object follows as it moves around another object.
Which planet:
is closest to the sun
is very hot
is covered with craters
Mercury
Tide
The rise and fall of the ocean, mainly because of the moon's gravity.
Which planet:
is second planet from the sun
has no moons
has thick layers of clouds
Venus
Rotation
to spin on an axis
The pull of gravity from the moon controls the ocean tides.
True or False
True
How does a telescope help scientists?
A telescope makes objects appear nearer, larger, and clearer.
Spacecrafts take pictures of planets and their surfaces.
True or False
True
The moon produces its own light.
True or False
False. The moon does not make its own light. The moon reflects the sun's light.
You can see the whole moon during a New Moon.
True or False
False. You cannot see any of the moon in the sky during a New Moon.
Why is the moon a satellite?
The moon is a satellite because it revolves around Earth.
Which two planets only have one known moon?
Earth and Pluto
Which planet is believed to have the most moons?
Saturn is believed to have the most moons. It has at least 18 moons.
Which planets have no known moons?
Mercury and Venus have no moons.
The moon is larger than Earth.
True or False
False. Earth is about 4 times bigger than the moon.