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Planets
Planets 2
Sun
Vocabulary
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100
The planet closest to the sun.
What is Mercury?
100
Once known as the ninth planet in the solar system.
What is Pluto?
100
The portion of the sun that can be seen in pictures.
What is the photosphere?
100
The layer of the sun's atmosphere that looks like a halo during an eclipse.
What is the corona?
100

Clyde Tombaugh dicovered it.

What is Pluto?

200
The second largest planet.
What is Saturn.
200
Scientists think the solar system was form about this long ago.
What is 4.6 billion years ago?
200
Areas of gas on the sun's surface that are cooler than the gases around them.
What is sunspots?
200
Object that orbits the sun, is round, and has cleared the area of its orbit.
What is a planet?
200

We are moving toward this galaxy at 110 kilometers per second

What is the Andromeda Galaxy?

300
The two planets with no moons.
What is Mercury and Venus.
300
About 99.85% of the mass of the solar system is contained with this.
What is the sun.
300
Huge loops of gas that link different parts of sunspot regions.
What are prominences?
300
The solar system began to form as this pulled rock, ice, and gas together.
What is gravity?
300

December 26th

Daily Double: What is St Stephen's Day

400
Scientists use this to measure distances within the solar system.
What is an Astronomical Unit?
400
Object that orbits the sun, is spherical, but has not cleared the area of its orbit.
What is a dwarf planet?
400
About 1/4 of the sun mass is made of the helium. The other 3/4 is made of this.
What is hydrogen?
400
An object that orbits a planet.
What is a satellite?
400

Betwen 85 and 90 moons

how many moons does Jupiter have?

500
The eight planets and the asteroid belt in order from the sun.
What is Mercury, Venus, Earth, Mars, Asteroid Belt, Jupiter, Saturn, Uranus, Neptune.
500
An astronomical unit (AU) equals the average distance between these two objects in the solar system.
What is the sun and earth?
500

Eruptions that occur when the loops in sunspot regions suddenly connect and break .

What is a solar flare?

500
The two planets with the largest gap between them.
What is Uranus and Neptune?
500
The fastest land animal with a recorded speed of 60-75 mph.
What is a cheetah?