NASA | The Truth about 2012 - Solar Storms

The video discusses the solar cycle, which is an 11-year cycle of solar activity. It explains how solar flares and coronal mass ejections (CMEs) occur regularly, but Earth's atmosphere protects us from harmful radiation. While CMEs can affect satellites and power grids, they are generally predictable, allowing for preparation. The video emphasizes that a catastrophic solar superstorm is unlikely due to our advanced understanding and monitoring of the sun.

What is the duration of the solar activity cycle?

• 30 years

• 5 years

• 20 years

• 11 years

How does Earth's atmosphere protect us from solar flares?

• By absorbing harmful radiation

• By reflecting them back into space

• By increasing the Earth's temperature

• By creating a magnetic shield

What are coronal mass ejections (CMEs)?

• Changes in the sun's magnetic field

• Small solar flares

• Massive eruptions of solar material

• Sudden bursts of solar wind

How often do CMEs typically hit Earth?

• Once a year

• Every day

• Once or twice a week

• Once a month

What can be affected by a large CME?

• Weather patterns

• Ocean currents

• Animal migration

• Satellites and power grids