Environmental Science: Chapter 17 Test

Front

What is a comet primarily made of?

Back

Ice, rock, frozen gases, and dust.

Front

What is an asteroid?

Back

A rocky object smaller than a planet that orbits a star.

Front

What is the process by which particles combine to form a new one called?

Back

Fusion.

Front

What is a star?

Back

A glowing ball of hot gas that makes its own energy and light.

Front

What is a moon?

Back

A natural satellite that orbits a planet.

Front

What is the difference between a comet and an asteroid?

Back

Comets are made of ice and dust, while asteroids are rocky objects.

Front

What is the Kuiper Belt?

Back

A region of the solar system beyond Neptune, filled with small icy bodies.

Front

What is the Oort Cloud?

Back

A theoretical cloud of icy objects that is believed to surround the solar system.

Front

What is the significance of the Hertzsprung-Russell diagram?

Back

It classifies stars based on their luminosity and temperature.

Front

What is the life cycle of a star?

Back

Stars form from gas and dust, go through stages like main sequence, and end as white dwarfs, neutron stars, or black holes.