[True/False] 1) Fog can cause your eyes to focus at far distances, leaving close

Question

[True/False]

1) Fog can cause your eyes to focus at far distances, leaving close object blurry.

2) A hailstone begins as a frozen raindrop or ice crystal. Strong updrafts of warm air and downdrafts of cool air move the frozen particle up and down through different levels of the storm cloud. The hailstone encounters different forms of moisture as it moves, and layers of frozen ice particles accumulate on its surface. The resulting hailstone has a layered structure.

3) The amount of deflection the air makes due to Coriolis Force is directly related to both the speed at which the air is moving and its longitude, but not latitude.

4) The size and frequency of raindrops are mostly controlled by the range of droplet size, cloud thickness, updrafts, and electrical charges.

5) Warm air aloft is normally higher pressure relative to colder air aloft, which is normally of lower pressure (at equivalent altitudes). (hint: think of columns of cold and warmer air standing side-by-side)

Explanation / Answer

1. False

Fog generally causes the eye to misaccommodate, resulting in blurred vision for more distanct objects. This is called as Mandelbaum effect, the tendency of the eye to appraoch "resting" accommodation under the conditions of poor visibility.

2, True

The strong updrift and downdrift give the hailstone the layered structure. They can grow to large sizes like 10cm before they fall out of the cloud.

3. False

f=-2 Omega sin(phi). Where phi is the latitude, so it depends on the latitude but not the longitude.

4. True

5. False

Cold air is high pressure and warm air is low pressure.

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