Question

1. ____________ are formed when warm, moist air is pushed upward rapidly, accompanied by powerful downdrafts of cool air.
2. ____________ are spawned from thunderstorms.

give the two possible causes of tornadoes given by researchers.
____________
____________
a ____________ is a low - pressure area which goes through a period of building up force over equatorial ocean areas.
hurricanes are called ____________ in the pacific.

Explanation:

1. Thunderstorms are formed when warm, moist air is pushed upward rapidly with cool - air downdrafts.
2. Tornadoes are spawned from thunderstorms. Possible causes include wind shear (change in wind speed or direction with height) and instability in the atmosphere.
3. A tropical depression is a low - pressure area that builds up over equatorial ocean areas.
4. Hurricanes are called typhoons in the Pacific.

Answer:

1. Thunderstorms
2. Tornadoes; Possible causes: wind shear, atmospheric instability
3. tropical depression
4. typhoons