Periodic comet

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/periodic-comet

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the origin regions?Kuiper Belt and Oort Cloud
2. What is the orbital period classification?Short-period (<200 years) and long-period (>200 years, often much longer)
3. Why do periodic comets have tails?When a comet gets close to the Sun, heat turns its ice into gas, creating a cloud called a coma. Solar wind pushes the gas and dust away, forming a bright dust tail and a glowing ion tail that always point away from the Sun.
4. Where do periodic comets come from?They come from the outer parts of our solar system, mainly the Kuiper Belt and the Oort Cloud, which are like giant storage areas of icy objects.

Sublimation: The process where a solid changes directly into a gas without becoming a liquid first.
Oort Cloud: A theoretical spherical shell of icy objects surrounding the solar system, far beyond the Kuiper Belt.
Kuiper Belt: A region of icy bodies located beyond Neptune, considered a reservoir for short-period comets.