Sun and Solar Phenomena Quiz

What is the Sun's approximate age?

• 1 billion years

• 5 billion years

• 10 billion years

• 15 billion years

What process in plants depends on the Sun's energy?

• Respiration

• Photosynthesis

• Digestion

• Fermentation

What type of radiation from the Sun is harmful and mostly screened out by Earth's atmosphere?

• Infrared radiation

• Ultraviolet (UV) radiation

• Visible light

• Radio waves

What is the primary reaction that produces energy in the Sun?

• Nuclear fission

• Nuclear fusion

• Chemical combustion

• Radioactive decay

Which layer of the Sun is the hottest?

• Photosphere

• Chromosphere

• Corona

• Core

What is the range of temperature found on the Sun's surface and above?

• 1,000°C to 1,000,000°C

• 4,500°C to 2,000,000°C

• 5,000°C to 1,500,000°C

• 6,000°C to 2,500,000°C

What is the term used to describe the Sun's outermost layer?

• Photosphere

• Chromosphere

• Corona

• Radiative Zone

What are sunspots?

• Bright spots on the Sun's surface

• Darker, cooler areas on the Sun's surface

• Areas of intense heat on the Sun's surface

• Regions of high magnetic activity on the Sun's surface

How often does the number of sunspots follow a cycle?

• Every 5 years

• Every 7 years

• Every 11 years

• Every 15 years

What is the solar wind?

• A stream of particles emitted by the Sun

• A type of solar radiation

• A solar flare

• A type of solar eclipse