7th Grade Notable Exoplanets Quizzes , Questions & Answers

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Earth’s Distant Cousin: Kepler-186f Quiz

Investigate the first Earth-sized planet found in the habitable zone of another star. This Kepler 186f Quiz explores the "cousin to Earth" located 500 light-years away. Test your knowledge of its orbit around a red...

Questions: 20 | Attempts: 61 | Last updated: Feb 16, 2026

Sample Question 1
What is the primary reason Kepler-186f is historically significant?

It is the closest planet to Earth

It was the first Earth-sized planet found in a habitable zone

It is made of solid gold

It orbits two stars at once

Sample Question 2
Kepler-186f is likely a gas giant like Neptune.

True

False

The Diamond World: 55 Cancri e Quiz

Meet the "diamond planet" where it may rain lava. The 55 Cancri e Quiz covers this super-Earth that orbits its star in just 18 hours. Discover the extreme pressure and heat that could turn its carbon-rich interior...

Questions: 20 | Attempts: 45 | Last updated: Feb 16, 2026

Sample Question 1
Why is 55 Cancri e nicknamed the "Diamond Planet"?

It is shaped like a gem

It reflects light like a mirror

Its interior is likely rich in pressurized carbon

It was found by a jeweler

Sample Question 2
55 Cancri e is located in the Habitable Zone of its star.

True

False

7th Grade Notable Exoplanets Quizzes , Questions & Answers

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