Astronomy Unit test review

Front

How long does it take light from the Sun to reach Earth?

Back

8 minutes

Front

What is NOT a type of galaxy?

Back

Oblong

Front

What does the sun's yellow color indicate about its temperature?

Back

It is a mid-range temperature star.

Front

Which type of electromagnetic radiation has a wavelength near 10^-8 meters?

Back

Ultraviolet radiation.

Front

What is the Moon phase called when it is a Waning Crescent?

Back

The Moon is in a phase where it is less than half illuminated and decreasing.

Front

What are the three main types of galaxies?

Back

Spiral, elliptical, and irregular.

Front

What is the significance of the Hertzsprung-Russell diagram in astronomy?

Back

It classifies stars based on their luminosity and temperature.

Front

What is the difference between a solar and lunar eclipse?

Back

A solar eclipse occurs when the Moon passes between the Earth and the Sun, while a lunar eclipse occurs when the Earth passes between the Sun and the Moon.

Front

What is the approximate distance from the Earth to the Sun?

Back

About 93 million miles or 150 million kilometers.

Front

What is the role of gravity in the formation of stars?

Back

Gravity pulls together gas and dust in space to form stars.