Environmental Science
In calm air the air temperature is -10o C, if the wind speed should increase to 30 knots (with no change in air temperature) the thermometer would indicate:

A much lower temperature than -10o C
A temperature of -10o C
A temperature of -30o C
A much higher temperature than -10o C

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Environmental Science
Frost forms when:

All of these
The dew point is 32oF or below.
Water vapor changes into ice without first becoming a liquid.
Objects on the ground cool below the dew point temperature.

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Environmental Science
Infrared and visible satellite images might provide:

A way of determining cloud thickness and altitude.
A way of distinguishing between "new" and "old" clouds.
A way of identifying clouds suitable for cloud seeding.
A way of distinguishing between wet and dry clouds.

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