The video discusses a sudden shift in weather patterns in the US, with freezing temperatures moving from Alaska and Canada to the lower 48 states. Prior to this, the US experienced record-breaking heat, while the Pacific Northwest and British Columbia faced heavy rainfall. The unusual weather was attributed to a stuck polar vortex, which typically changes shape and position but remained stationary, causing warm weather in November and early December.

What event on December 6th affected the weather in the lower 48 states of the US?

• A sudden movement of air

• A volcanic eruption

• A hurricane

• A solar eclipse

Which regions experienced record-breaking autumn rainfall?

• The Midwest

• The Pacific Northwest and British Columbia

• The Southern US

• The Eastern Seaboard

What is the polar vortex?

• A type of cloud formation

• A warm ocean current

• A high-speed air channel

• A type of hurricane

What unusual weather did the US experience in November and early December?

• Heavy snowfall

• Strangely warm weather

• Frequent tornadoes

• Severe thunderstorms

What caused the polar vortex to be stuck in one place?

• An unusually long period of stability

• A shift in the Earth's axis

• A volcanic eruption

• A change in ocean currents