rocky planet
Definition
A rocky planet is a planet that is made up of mostly rocks and metals. Rocky planets are the most common type of planet in our solar system. They include Mercury, Venus, Earth, and Mars.
Rocky planets are formed from the leftover material that was left over after the formation of the sun. This material was very hot and dense, and it eventually clumped together to form the planets.
Rocky planets are solid, and they have a hard surface. They also have a thick atmosphere, which is made up of gases like nitrogen, oxygen, and carbon dioxide.
Rocky planets are not as big as gas giants, like Jupiter and Saturn. They are also much colder.
How can the word be used?
The rocky planets in our solar system are Mercury, Venus, Earth, and Mars.
Different forms of the word
Noun:
- a planet that is composed primarily of silicate rocks or metals.
Etymology
The word "rocky planet" is a compound word, made up of the words "rocky" and "planet".
The word "rocky" comes from the Old English word "roccian", which means "to make rough".
The word "planet" comes from the Greek word "planetēs", which means "wanderer".
The literal meaning of the word "rocky planet" is "a planet that is made of rocks".
Question
What are the rocky planets?