The video discusses the December 26th tsunami, highlighting the challenges in predicting earthquakes and the importance of early warning systems. Existing systems in the Pacific and Alaska are being expanded globally, with new installations planned for the Indian Ocean. These systems use ocean floor sensors and satellites to detect seismic events and issue tsunami watches. The video emphasizes the potential to save lives with such systems, noting the devastating impact of the 2004 tsunami and the ongoing risk of future events.

What makes earthquakes challenging to predict?

• They occur in remote areas.

• They are too small to detect.

• They happen without warning signs.

• They are caused by unknown factors.

Which regions currently have early tsunami warning systems?

• Arctic Ocean and Antarctic

• Atlantic Ocean and Caribbean

• Pacific Ocean and Alaska

• Indian Ocean and Mediterranean

What technology is used in the new tsunami warning systems?

• Sensors, buoys, and satellites

• Submarines and ships

• Sonar and radar

• Drones and weather balloons

What magnitude on the Richter scale triggers a tsunami watch?

• 6.0

• 7.5

• 8.0

• 9.0

How many countries were affected by the December 26th tsunami?

• 15

• 12

• 10

• 8