True or false:

1.air is considered to be stable if it descends to its original level after an initial vertical displacement. rising air parcels are considered to be unstable, and can sometimes result in cumulonimbus clouds.

2.

according to one of the animations linked to our web site, in december sensible heat flux over north america ranges from 0 to minus 100 (-100) w/m**2 while over australia sensible heat flux ranges 50 to 200 w/m**2 or greater.

3.

as you move further away from a warm front, surface temperatures continue to decrease and sleet may change over to rain.

4.

in december, "sensible heat flux" over land masses is, on average greater in the southern hemisphere than in the northern hemisphere.

5.

you read a weather report that states that for a specific date, the normal (norm) high temperature is 70deg f. in this case, the 70deg norm represents the average of all high temperatures for that date taken over a 30 year period.

6.

50% of the earth's atmosphere (total mass) is below 30km (19mi) from the surface.