Thunderstorm Training Test
By KD1LD

1. There are two general types of thunderstorms..........................

a. air mass thunderstorms, and frontal thunderstorms.

b. morning and evening

2. Air mass thunderstorms may result when the sun heats the surface causing warm moist air to rise and cool. Over land areas, these storms generally accrue during the .....................

a. afternoon and early evening.

b. morning and at night

3. Cold front thunderstorms occur when a wedge of cold air moves into a region of unstable warm air supplying the ................

a. required lifting action

b. the updraft

4. Warm front thunderstorms are difficult to locate because they are masked by other clouds. Generally they are widely spread and not as common as cold front thunderstorms.Warm front thunderstorms occur when warm conditional unstable air flows up a slope ..............................

a. of retreating colder air

b. of retreating warmer air

5. Three factors are required to form a thunderstorm.

a. Air of high moisture content, some type of lifting action, and conditionally unstable air.

b. Air of low moisture content, some type of lifting action, and conditionally unstable air.

6. Every thunder cell passes through these three stages. ................................. The cumulus stage, an updraft perveils through the entire cell. As it develops further into the mature stage the down draft spreads through the cell until, it cuts off the updraft. This ends the mature stage and begins the dissapating or anvil stage.

a. Cumulus, mature, and dissapating

b. severe, none severe, and mature

7. The intensity of any storm depends on it's stage of development. A multi cellular storm contains cells in various stages of development. Each successful cell tends to obtain a greater height because one feeds the next. A new cell absorbs .......................

a. saturated air from earlier cells.

b. dry air from earlier cells.

8. There are four basic types of thunderstorms, ........................ Multi cells can form in clusters or line. The multi cell line (squall line) also know as organized convection are common in New England. Sometimes there is a multi cluster thunderstorm. Supercells are not common in New England but do occur.

a. single cells, multi cells, cluster, and the supercell

b. multi cells, cumulus, updraft stage and mature stage

9. Severe weather occurs as down bursts, moderate size hail, flash floods and tornadoes. Severe events frequently occur near the updraft downdraft interface, also know as ................. A bow echo develops as part of the down burst. It forms a head and a tail. It bows out from the center. The strongest winds are in the leading edge of the bow. Tornadoes can form here, but they usually are found in the head.

a. the rain free base

b. the rain base

10. The supercell is a strong storm. It's also know as a mezzo low. The shelf cloud is quite common. The rain shaft, the wall cloud and quite often a tornado occur here. Strong down burst, damaging hail, flash floods and tornadoes are common. All supercells rotate. Mostly in a ....................

a. counter clock wise direction.

b. clock wise direction.