Corona

The solar corona is an extremely hot plasma with temperatures exceeding 1,000,000°C, much hotter than the Sun's visible surface at about 6,000°C. It is typically visible from Earth only during a total solar eclipse. The Sun's magnetic field causes the corona to be unevenly distributed, concentrated in some areas and nearly absent in others.

What is the approximate temperature of the Sun's corona compared to its visible surface?

• 1,000,000 degrees Celsius, much hotter than the surface

• 10,000 degrees Celsius, slightly hotter than the surface

• 6,000 degrees Celsius, similar to the surface

• 500,000 degrees Celsius, cooler than the surface

When can we observe the Sun's corona from Earth?

• During a new moon

• During a partial solar eclipse

• During a lunar eclipse

• During a total solar eclipse

What causes the uneven distribution of the Sun's corona?

• The Sun's magnetic field

• The Sun's rotation

• The Sun's nuclear reactions

• The Sun's gravitational pull

In which areas is the Sun's corona more concentrated?

• In areas with strong magnetic fields

• Near the Sun's poles

• Near the Sun's equator

• In areas with weak magnetic fields

What is the state of the Sun's corona in areas where it is practically non-existent?

• It is highly concentrated

• It is sparse or absent

• It is evenly distributed

• It is extremely hot