Question

1. which one of the following is not true for vertical structure (four layers) of the atmosphere

A. in the troposphere the temperature decreases with altitude

B. The stratosphere has ozone molecules that absorb Sun's radiation.

C. Thermosphere has strong wind that causes the temperature to rise

D. Mesosphere is an unstable well-mixed layer

2. In 2005, Hurricane Katrina hit hard in New Orleans. The city was vulnerable because of the following.

A. A city affected by sea-level rise

B. A city built on a flood plain

C. A city with blocked canals

D. All of above

Answer 1

1. Answer is option C.

Because, temperature rise in Thermosphere occur because of absorption of solar radiation. And the other three option is true for vertical structure of the atmosphere.

2. Answer is option D- All of the above.

Because , New Orleans is situated at the flood plain of Mississippi river which is at upper level than normal level of this city. So option A and B is correct. There are three canals named 17th street, Orleans Avenue & London Avenue. These controls flood of New Orleans. So blockage of these canals also causes flooding. So option C also correct.

Hence, For question 1 option C and for question 2 option D is correct.