Discovering the Sun's Mysteriously Hot Atmosphere

The video explores the unexpected temperature behavior of the sun, particularly the corona, which is much hotter than the surface. This phenomenon, known as the coronal heating problem, was first observed during an eclipse in the 1800s. Scientists used spectroscopes to study the light from the corona, discovering a unique green line indicating high temperatures. Theories suggest that waves or magnetic field realignments may contribute to the corona's heat. Understanding this requires direct observations from the corona itself.

What is the coronal heating problem?

• The corona is cooler than the sun's core.

• The sun's surface is hotter than its core.

• The corona is hotter than the sun's surface.

• The sun's core is cooler than its surface.

How did scientists first study the chemical properties of materials on Earth?

• By using telescopes to observe stars.

• By measuring the density of materials.

• By analyzing the heat emitted by materials.

• By using spectroscopes to identify light patterns.

What was the mysterious green line observed in the sun's corona initially thought to be?

• A reflection of Earth's atmosphere.

• A new element called coronium.

• A miscalculation in the spectroscope.

• A result of solar flares.

What does the stripping of electrons from iron in the corona indicate?

• The sun's core is denser than gold.

• The sun's surface is hotter than the corona.

• The corona is millions of degrees hot.

• The corona is cooler than expected.

Which theory suggests that small waves on the sun's surface contribute to the corona's heat?

• The magnetic field realignment theory.

• The wave-particle interaction theory.

• The ocean wave analogy theory.

• The solar flare theory.