Sun's Core and Light Properties

The video explains the Sun's core, where gravity compresses matter to high density and temperature, enabling nuclear fusion. Hydrogen atoms fuse into helium, releasing energy as per Einstein's equation. This energy travels from the core through the radiative and convective zones to the surface, taking thousands of years. Photons move randomly, eventually reaching the surface and radiating as light, which travels to Earth in about 8 minutes.

What is the density of the Sun's core compared to water?

• 50 times the density of water

• 150 times the density of water

• 200 times the density of water

• 100 times the density of water

What is the primary nuclear reaction occurring in the Sun's core?

• Oxygen fusing into carbon

• Carbon fusing into oxygen

• Hydrogen fusing into helium

• Helium fusing into hydrogen

According to Einstein's equation, what happens to the mass during nuclear fusion in the Sun?

• It decreases and converts to energy

• It increases

• It decreases and converts to matter

• It remains constant

How do photons travel through the radiative zone?

• In a straight line

• In a circular path

• In random directions

• In a spiral path

What is the primary method of heat transfer in the Sun's convective zone?

• Radiation

• Conduction

• Convection

• Diffusion

How long does it take for energy to travel from the Sun's core to the surface?

• A few hours

• A few minutes

• Thousands of years

• A few years

What happens to the heat produced in the Sun before it reaches the surface?

• It is trapped and slowly travels outward

• It is immediately radiated away

• It is converted into light instantly

• It is absorbed by the core

How long does it take for light from the Sun to reach Earth?

• About 8 days

• About 8 hours

• About 8 minutes

• About 8 seconds

What is the speed of light as it travels through the universe?

• Faster than the speed of sound

• Slower than the speed of sound

• At the speed of gravity

• At the speed of light

What happens to the light after it leaves the Sun?

• It gets absorbed by the Moon

• It returns to the Sun

• It disperses throughout the galaxy

• It stops at the Earth's atmosphere