The Sun: Our Star

Astronomy

Explore facts about the Sun, its structure, activity, and influence on our solar system. Learn about solar flares, sunspots, and the Sun's role in life on Earth.

Sun Solar System Heliophysics

9 Questions Medium Ages 10+ Nov 28, 2025

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About this Study Set

This study set covers Astronomy through 9 practice questions. Explore facts about the Sun, its structure, activity, and influence on our solar system. Learn about solar flares, sunspots, and the Sun's role in life on Earth. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 9 questions from the The Sun: Our Star study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the Sun mainly composed of?

A Hydrogen and Helium
B Iron and Nickel
C Oxygen and Carbon
D Silicon and Aluminum

2 Approximately how far is the Sun from Earth?

A 93 million miles
B 1 million miles
C 1 billion miles
D 1 light-year

3 What is the name of the Sun's outer atmosphere?

A Corona
B Photosphere
C Chromosphere
D Radiative Zone

4 What are solar flares?

A Energetic bursts of light and particles
B Dark spots on the Sun's surface
C Streams of solar wind
D Rings around the Sun

5 What is the approximate surface temperature of the Sun (photosphere)?

A 10,000 degrees Fahrenheit
B 27 million degrees Fahrenheit
C 3.5 million degrees Fahrenheit
D -460 degrees Fahrenheit

6 What causes auroras on Earth?

A Solar flares and coronal mass ejections
B Earth's magnetic field
C Volcanic eruptions
D Ocean currents

7 How long does it take for the Sun to orbit the center of the Milky Way?

A 230 million years
B 365 days
C 24 hours
D 1 million years

8 What is the name for the study of the Sun and its influence throughout the solar system?

A Heliophysics
B Geophysics
C Astrophysics
D Cosmology

9 What is a coronal hole?

A A region with lower density in the Sun's atmosphere
B A dark spot on the Sun
C A giant explosion on the Sun
D A type of solar flare

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