Q. Consider the following statements:
1.A jet stream is a slow-moving current of air near the Earth’s surface.
2.A weakening of the jet stream causes a prolonged heatwave.
Which of the statement(s) given above is/are correct?
Answer: B
Notes:
Explanation –
Statement 1 is incorrect. Jet streams are fast-moving currents of air found high in the troposphere. Jet streams may start, stop, split into two or more parts, combine into one stream, or flow in various directions including opposite to the direction of the remainder of the jet.
Statement 2 correct. A weakening or stalling of the jet stream can lead to persistent weather patterns, including prolonged heatwaves. When the jet stream becomes weaker or wavier, it can cause high-pressure systems to become stuck over a region, resulting in clear skies and hot temperatures for an extended period.
Source: The Hindu
