Atmosphere

Front

What is the lowest region of the atmosphere called?

Back

Troposphere

Front

How high does the troposphere extend above the surface of the Earth?

Back

13 km

Front

What does a thermometer measure?

Back

Air temperature

Front

In which century did meteorologists begin using weather balloons?

Back

Twentieth century

Front

What is the function of a barometer?

Back

Measures air pressure

Front

Which layer of the atmosphere is above the troposphere?

Back

Stratosphere

Front

What are jet streams?

Back

Air currents that flow eastward in the stratosphere

Front

In winter, how fast can jet streams move? Options: Over 100 km per hour, Over 200 km per hour, Over 300 km per hour, Over 400 km per hour

Back

Over 400 km per hour

Front

What role do jet streams play in weather patterns?

Back

They push fronts through countries and shift storm systems

Front

Why recharges in the stratosphere not thoroughly understood by meteorologists?

Back

Because they are too complex