Astronomy Final Exam

Front

What is the force that pulls together the matter in stars?

Back

Gravity

Front

How are the layers of the atmosphere classified?

Back

According to changes in temperature.

Front

What marks the birth of a star?

Back

The start of nuclear fusion.

Front

What do all inner planets have in common?

Back

They are all small and have rocky surfaces.

Front

Which planet is known to be the hottest?

Back

Venus.

Front

What is the primary component of stars that undergoes nuclear fusion?

Back

Hydrogen.

Front

What is the main difference between inner and outer planets?

Back

Inner planets are rocky, while outer planets are gas giants.

Front

What is the significance of the ozone layer in the atmosphere?

Back

It protects Earth from harmful ultraviolet (UV) radiation.

Front

What is the process by which stars generate energy?

Back

Nuclear fusion.

Front

What are the four terrestrial planets in our solar system?

Back

Mercury, Venus, Earth, and Mars.