3rd Grade Science - Planets
The Solar System and Beyond
Terms in this set (33)
What keeps the planets in orbit around the sun.
The force of gravity
Name the planets of the solar system in order, starting at the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
Name the largest planet and the smallest planet in our solar system.
Mercury is the smallest. Jupiter is the largest
What is the memory trick for learning the order of the planets?
My very excellent mother just served us nachos
What is the major source of energy on Earth?
Where is the core of the sun?
The core is in the center of the sun.
Where is the photosphere of the sun?
The photosphere is the middle ring of the sun between the core and the corona.
What is the corona of the sun?
The corona is the outer ring of the sun.
Name the inner planets of the solar system.
Mercury, Venus, Earth, and Mars.
Why are Mercury, Venus, Earth, and Mars called inner planets?
They are closest to the sun.
I have long, extremely hot periods of sun shining during the day, and I have long, extremely cold nights. I am the smallest planet. Which planet am I?
I am the only planet known to have liquid water on its surface. In fact, almost ¾ of my surface is covered in water. I have a nearly circular orbit. Which planet am I?
My surface is dry and rocky with mountains and volcanoes. There is no water on my surface. Which planet am I?
I have two moons that orbit me. You will find dust storms on my surface as well as ice. If humans were able to live on my surface, they would experience seasons. Which planet am I?
Inner planets are all terrestrial. What does that mean?
It means they are made mainly of rock and metal.
Do inner planets rotate quickly or slowly?
Name the outer planets.
Jupiter, Saturn, Uranus, and Neptune.
I am a planet with no solid surface, hot liquid deep inside, and a rocky core at my center. I have rings made of small particles and dust, and 63 known moons. Which planet am I?
I used to be considered a planet, but am not any more. My surface is rocky and very cold. What am I?
I am a cold planet on the surface but hot at my core. There are 11 rings that circle me. You will find 21 moons in orbit around me. I rotate on my side. Which planet am I?
I am cold on the surface with a hot core. There are 30 moons that orbit me. Of all the planets, I have the largest rings around me. My surface is not solid. Which planet am I?
I am the stormiest planet, with cold temperatures and seasons. There are 8 moons that orbit me. If you look closely you will see rings that circle me. Which planet am I?
What two things determine the brightness of a star?
The light-energy output of the star and its distance from the Earth.
How are stars classified?
Stars are classified according to their brightness.
Why do the constellations seem to move around in the sky?
The Earth's rotation makes the constellations appear to move.
Which constellation looks like a big kitty litter scoop?
Which constellation looks like an upside down kitty litter scoop?
Orion, also called the Hunter, has three stars that make up his belt. What star is at his shoulder to your left ?
Which of these stars is the brightest star in the constellation the Big Dog?
Which star in the Northern Hemisphere is above the axis of the Earth?
Which star makes up Orion's knee to your right, or the end of his tunic?
What do telescopes do?
Telescopes magnify the appearance of distant objects in the sky and makes them visible.
What galaxy is our solar system in?
the Milky Way galaxy
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