Severe weather

Thunderstorms are characterized by __________ clouds that produce heavy rain, thunder and lightning, strong winds and sometimes hail.

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Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

What type of air contributes to thunderstorms

• warm, moist unstable air

• Cold, moist unstable air

• Cold dry stable air

• Hot dry stable air

Tags

NGSS.MS-ESS2-5

What natural disaster kills more people than any other disaster?

• Fires

• Tornados

• Flash floods

• Hurricanes

Tags

NGSS.MS-ESS3-2

Flash floods occur when the rainfall exceeds the lands ​ (a)   rate or carrying capacity of the river.

Thunderstorms form along fronts because air is forced to ​ (b)   and ahead of fronts called ​ (c)   lines.

​ (d)   are large single-cell thunderstorms with extremely strong updrafts, the updrafts rotate to form ​ (e)   .

• infiltration
• rise
• squall
• Supercells
• tornadoes

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS3-2

What is this long, narrow band of thunderstorms that move together in a line, often associated with a front or trough of low pressure

• Supercell

• Squall line

• Cumulonimbus cloud

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

A ​ (a)   thunderstorm forms when a thunderstorm's updraft begins to rotate due to ​ (b)   , a change in wind ​ (c)   with height.

When wind speeds and directions change significantly with height, this creates a "​ (d)   " in the atmosphere, which can then be tilted by the ​ (e)   . 

• supercell
• wind shear
• speed and direction
• rolling effect
• updraft

Tags

NGSS.MS-ESS2-5

A change in wind speed and/or direction over a short distance, either horizontally or vertically

• squall line

• supercell

• updraft

• Wind shear

Tags

NGSS.MS-ESS2-5

A thunderstorm with ​ (a)   is the necessary condition for hail formation. These updrafts carry water droplets high into the atmosphere.

In the upper atmosphere, temperatures are ​ (b)   .

As water droplets are carried upwards, they freeze and form small ​ (c)   or graupel (soft hail) which act as the initial hailstone nucleus. 

The hailstone nucleus then ​ (d)   water droplets (liquid water that's below freezing), which freeze onto the hailstone's surface, causing it to grow in size. 

Eventually, the hailstone becomes ​ (e)   for the updraft to support, and it falls to the ground. 

• powerful updrafts
• below freezing
• ice crystals
• collides with supercooled
• too heavy

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Place the steps of the production of hail in the correct order:

• Nucleus of hailstone collides with super cooled water droplets

• Hailstone becomes too heavy for the updrafts and they fall to the earth

• As water droplets are carried upward they begin to freeze

• updraft carries the growing hailstone back into the cloud where it grows more

• Rain drops sucked into the updraft

Tags

NGSS.MS-ESS2-5

A violent rotating column of air that forms from a mesocyclone is a

• Hurricane

• Flash flood

• Tornado

Tags

NGSS.MS-ESS2-5