Question

Which is true about comets?

The orbits of comets do not take them past the Jovian planets.
The Oort cloud of comets is found between Neptune and Pluto.
All comets have long tails made of vaporizing gases.
Comets are held together by frozen gases.

Answer 1

The correct answer is D

Comets are held together by frozen gases

Comets are floating particles of ice and dust held together by frozen gases such as methane,water,ammonia and carbon dioxide. They are basically chunks of ice and dust.