What Causes Auroras?

The video explains the phenomenon of auroras, starting with the basics of solar winds and Earth's magnetic field. It describes how the magnetic field protects Earth from solar plasma and how auroras are formed when charged particles hit the atmosphere near the poles. The video also covers the impact of solar storms on auroras and explains the different colors seen in auroras, which result from the interaction of solar particles with atmospheric gases like oxygen and nitrogen.

What is the common but incomplete explanation for the cause of auroras?

• They are caused by solar winds hitting the upper atmosphere.

• They are a result of Earth's rotation.

• They are caused by moonlight reflecting off the atmosphere.

• They are a result of volcanic eruptions.

How does the Earth's magnetic field protect the planet from solar plasma?

• By converting the plasma into harmless gases.

• By reflecting the plasma back into space.

• By deflecting the plasma along magnetic field lines.

• By absorbing the plasma into the Earth's core.

What happens to the Earth's magnetic field when it is hit by solar winds?

• It breaks apart completely.

• It becomes stronger and more stable.

• It remains unchanged.

• It gets distorted, squashing on one side and elongating on the other.

What causes the different colors seen in auroras?

• The temperature of the Earth's surface.

• The speed of the solar wind.

• The type and amount of gases in the atmosphere.

• The time of day.

Which gas in the atmosphere is responsible for emitting green, yellow, or red light in auroras?

• Carbon Dioxide

• Hydrogen

• Oxygen

• Helium