☀️ The Sun
🌍 Earth & Space
🪐 Inner Planets
🌌 Outer Planets
🌠 Solar System Basics
⭐ Fun Facts
100

The visible surface of the sun.
 

What is the photosphere?

100

 The force that keeps planets in orbit.

 What is gravity?

100

The planet closest to the sun.
 

What is Mercury?

100

 These large planets are mostly made of gas.
 

What are gas giants?

100

The sun and everything that orbits it.
 

What is the solar system?

100

 A year with an extra day.
 

What is a leap year?

200

 A dark, cooler area on the sun.
 

What is a sunspot?

200

 When Earth spins on its axis.
 

What is rotation?

200

 The hottest planet due to thick clouds.

What is Venus?

200

The largest planet in the solar system.
 

What is Jupiter?

200

The shape of a planet’s orbit.

What is an ellipse?

200

 Beautiful lights seen near Earth’s poles.
 

What is an aurora?

300

A sudden explosion of energy from the sun.
 

What is a solar flare?

300

When Earth travels around the sun.
 

What is revolution?

300

The planet that supports life.

What is Earth?

300

 The planet known for its large ring system.

What is Saturn?

300

 The path a planet follows around the sun.
 

What is an orbit?

300

 The planet tilted on its side.

What is Uranus?

400

 The outer glowing layer seen during an eclipse.

 What is the corona?

400

 The imaginary line that divides Earth into Northern and Southern halves.

 What is the equator?

400

 The Red Planet.

 What is Mars?

400

 The planet visited by Voyager 2 after a long journey.

What is Uranus?

400

The model that explains formation from gas and dust.

What is the nebular system?

400

The planet that rotates once in about 16 hours.

What is Neptune?

500

 A large arch of glowing gas rising from the sun.

What is a solar prominence?

500

 The time of day when shadows are shortest.

What is noon?

500

 The four rocky planets closest to the sun.

 What are Mercury, Venus, Earth, and Mars?

500

The planet with the Great Red Spot storm.
 

What is Jupiter?

500

 The belt between Mars and Jupiter.
 

 What is the asteroid belt?

500

These planets are small and rocky.

What are the inner planets?

600

 A stream of charged particles sent out from the sun.
 

 What is solar wind?

600

 A country near the equator that stays warm all year.
 

What is Singapore?

600

 The inner planet that has seasons similar to Earth.

What is Mars?

600

Neptune’s largest moon.
 

What is Triton?

600

 The belt beyond Neptune filled with icy objects.

 What is the Kuiper Belt?

600

The reason Pluto is extremely cold.

 What is it is very far from the sun?

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