Exploring Planets and Galaxies

Front

What is a common feature of the atmospheres of outer planets?

Back

They are thick and composed mainly of hydrogen and helium.

Front

What is the main sequence stage in a star's life cycle?

Back

The stage where a star fuses hydrogen into helium in its core.

Front

Which of the following is a characteristic of inner planets?

Back

They have rocky surfaces and are smaller in size.

Front

Which inner planet is known for having the largest volcano in the solar system, Olympus Mons?

Back

Mars.

Front

What is the primary reason for the seasons on Earth?

Back

The tilt of Earth's axis.

Front

What are the four terrestrial planets in our solar system?

Back

Mercury, Venus, Earth, and Mars.

Front

What is the difference between a planet and a dwarf planet?

Back

A planet has cleared its orbit of other debris, while a dwarf planet has not.

Front

What is the Kuiper Belt?

Back

A region of the solar system beyond Neptune that contains many small icy bodies.

Front

What is a galaxy?

Back

A massive system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

Front

What is the Milky Way?

Back

The galaxy that contains our solar system.