Astronomy Final Exam part 1

Front

Why do the stars rise and set?

Back

Because Earth rotates on its axis.

Front

In size and in structure, the Earth is most similar to which planet?

Back

Venus.

Front

What does the absolute magnitude of a star measure?

Back

How much light a star is giving off.

Front

Why is the surface of Venus much hotter than expected?

Back

The atmosphere of Venus contains a high percentage of carbon dioxide.

Front

What allows you to see a brighter image in a telescope?

Back

A larger aperture.

Front

What is the primary reason for the seasons on Earth?

Back

The tilt of Earth's axis.

Front

What is the main component of the Sun's atmosphere?

Back

Hydrogen.

Front

What is a light-year?

Back

The distance that light travels in one year.

Front

What is the difference between a planet and a star?

Back

A planet orbits a star and does not produce its own light, while a star generates light through nuclear fusion.

Front

What is the significance of the Hertzsprung-Russell diagram?

Back

It classifies stars based on their luminosity and temperature.