Question

1. choose the best answer.

the ______ is the solid piece of ice and rock that is the main part of the comet.

○ halo

○ nucleus

○ coma

○ kernel

1. choose the best answer.

the ______ is the gas cloud surrounding a comet.

○ nucleus

○ halo

○ kernel

○ coma

Explanation:

Question 5

To solve this, we recall the structure of a comet. The nucleus is the solid, central part of a comet made of ice, rock, and dust. A halo is not a standard comet structure term here, a coma is the gas cloud around the nucleus, and a kernel is not the term for a comet's main solid part. So the correct term for the solid ice - rock main part of a comet is nucleus.

We know the parts of a comet. The coma is the cloud of gas and dust that surrounds the nucleus of a comet. The nucleus is the solid part, a halo is not the correct term for the gas cloud, and a kernel is not related to a comet's gas cloud. So the gas cloud surrounding a comet is called a coma.

Answer:

B. nucleus (assuming the options are labeled as A. halo, B. nucleus, C. coma, D. kernel)

Question 6