stars

What is the color of the coolest stars?

• blue
• Yellow
• Red
• Orange

What color are the hottest stars?

• red
• yellow
• orange
• blue

True or False
The Sun is the biggest star in the sky.

• True
• False

Which statement best describes stars?

• large planets that are composed mostly of gases

• celestial bodies made up of gas that give off light

• faint dots of light that can be seen from Earth’s surface

• objects that form in the outer parts of the solar system

According to this Hertzsprung-Russell Diagram which stars are brightest?

• Purple
• Red
• Blue
• Yellow

Betelgeuse is classified as a ____________ star.

• Supergiant
• Giant
• White Dwarf
• Main Sequence

Our Sun is a ______________ star.

• Blue 
• Main Sequence
• Yellow
• Orange

Luminosity measures a star's _____________________.

• Color
• Temperature
• Brightness

Characteristics used to classify stars include

• distance, size, and color.
• size, distance, and brightness.
• color, brightness, and distance.
• size, brightness, and temperature.

Which star has the highest luminosity?

• Procyon B

• Polaris

• Pollux