31. Hailstones that form via the dry growth regime typically have what character

Question

31. Hailstones that form via the dry growth regime typically have what characteristic?

a. they have smooth surfaces.

b. they are opaque or milky white.

c. they are solid ice with no air bubbles.

d. the surface temperature of the hailstone is above 0°C.

32. Hailstones that form via the wet growth regime typically have what characteristic?

a. they are opaque or milky white.

b. they are at least one inch in diameter.

c. they have tiny air bubbles trapped inside the hailstone.

d. the surface temperature of the hailstone is at 0°C.

26. Cloud droplets will remain suspended in air as long as

a. their diameters are less than 0.02 mm

b. the updraft speed is larger than the terminal velocity

c. the drag force is greater than the gravitational force

d. all of the above

Explanation / Answer

31.

b. they are opaque or milky white.

In Dry growth of hailstones ,the air temperature is well below freezing i,e <0oC.At this temperature When hailstone collides with water, the water freezes in the form of milky white.

32.

d. the surface temperature of the hailstone is at 0°C.

In wet growth of hailstone the air temperature is below freezing, i.e at 0oC. At this temperature When hailstone collides with water, the water doen't freeze immediately on the ice.It slowly spreads over it and freezes.

26.

d) All the above

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