Environmental Science
Assuming that the night will remain clear, calm, and unsaturated, the predicted minimum temperature is 32oF. Suddenly the wind speed increases and remains gusty throughout the night. The minimum temperature will most likely be:

About the same as predicted but will occur earlier in the night
Higher than predicted due to mixing
Much lower than predicted due to radiational cooling
Higher than predicted due to the release of latent heat

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Environmental Science
The aurora is produced by:

The combination of molecular and atomic oxygen to form ozone
Reflections of sunlight by polar ice fields
Burning oxygen caused by the intense sunlight at high altitude
Fast-moving charged particles colliding with air molecules
Scattering of sunlight in the upper atmosphere

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Environmental Science
Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the minimum temperature reported in the newspaper was only 35o F. The most likely reason for this apparent discrepancy is that:

The thermometer was read before the minimum temperature was reached for that day
The newspaper reported the wrong temperature
The thermometer was in error
The thermometer was read incorrectly
Temperature readings are taken in instrument shelters more than 5 feet above the ground

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