Advertisement.

EnchantedLearning.com is a user-supported site.
As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages.
Click here to learn more.

ad
(Already a member? Click here.)


You might also like:
CometsComet Quiz and Research ActivityComet Cloze ActivityComet PuzzleComets and Asteroids Venn Diagram PrintoutToday's featured page: Plant Glossary



Our subscribers' grade-level estimate for this page: 5th

Answers
EnchantedLearning.com
Label the Comet

Label the comet diagram using the terms below.
More Astronomy Activities
More on comets
Label the comet

coma - The roughly spherical blob of gas that surrounds the nucleus of a comet; it is about a million km across. The coma is comprised of water vapor, carbon dioxide gas, and other neutral gases that have sublimed (evaporated from a solid, skipping the liquid phase) from the solid nucleus.
dust tail - A long, wide tail buffeted by photons emitted from the Sun, but it curves slightly due to the comet's motion.
hydrogen envelope - Hydrogen gas that surrounds the coma of the comet and trails along for millions of miles (it is usually between the ion tail and the dust tail). The hydrogen envelope is about 10 million km across at the nucleus of the comet and about 100 million km long.
ion tail - A tail of charged gas particles (ions) that always faces away from the sun because the solar wind (composed of ions streaming from the sun at high velocities) pushes it away.
nucleus - The frozen center of the comet's head. It is made of ice, gas, and dust. It contains most of the comet's mass but is very small (about 1 to 10 km across).



Enchanted Learning Search

Search the Enchanted Learning website for:



Advertisement.



Advertisement.



Advertisement.



Copyright ©2003-2016 EnchantedLearning.com ------ How to cite a web page