With a sketch, show why the setting sun often appears red to an observer on the ground. Why does the sun appear white at noon and red at sunrise and sunset?

What will be an ideal response?


Answers may vary.

Environmental & Atmospheric Sciences

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The amplitude of an earthquake is recorded by three different seismograph stations. The seismograph station in Milwaukee, WI records an amplitude of 5 mm; the seismograph station in Toronto, ON records an amplitude of 7.5 mm; and the seismograph station in Portland, ME records and amplitude of 10 mm. Which city is closest to the epicenter of the earthquake?

A. Portland, ME B. Milwaukee, WI C. Toronto, ON D. Not enough data is given to answer. E. All three cities are equal distance from the earthquake epicenter.

Environmental & Atmospheric Sciences

Which of the following is not a heterocyclic aromatic amine?

A) piperidine B) purine C) pyrimidine D) pyridine

Environmental & Atmospheric Sciences

The fluid-filled structure that helps to cushion and protect a developing embryo is the

A) zona pellucida. B) amnion. C) blastocyst. D) placenta.

Environmental & Atmospheric Sciences

Sea surface temperature forecasts are based on

A) an analog statistical model. B) a "canonical" statistical model based on correlations measured over space and time. C) a numerical model. D) all of the these

Environmental & Atmospheric Sciences