MET 2010 Lecture Notes - Lecture 11: Mesocyclone, Atmospheric Pressure, Funnel Cloud

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tanporcupine50

26 Jun 2018

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Thunder is caused by:

The rapid heating of air surrounding a lightning channel

If you see a lightning stroke and then, 15 seconds later, hear the thunder, the lightning is about ____

miles away.

3 miles.

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Thunder will not occur:

Without lightning

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When caught in a thunderstorm in an open field, the best thing to do is to:

Crouch down as low as possible while minimizing contact with the ground

A tornado vortex that does not touch the ground is called a:

Funnel cloud

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Document Summary

The rapid heating of air surrounding a lightning channel. If you see a lightning stroke and then, 15 seconds later, hear the thunder, the lightning is about ____ miles away. When caught in a thunderstorm in an open field, the best thing to do is to: Crouch down as low as possible while minimizing contact with the ground. A tornado vortex that does not touch the ground is called a: The us has more tornadoes than any other country in the world. The rotating updraft inside a severe thunderstorm is called a: The small, rapidly rotating whirls that sometimes occur within a large tornado are called: A funnel cloud or tornado may develop from this rotating cloud that extends beneath a severe thunderstorm. The funnel cloud characteristic of a tornado is principally formed by: Condensation of water vapor in air drawn into the low pressure core of the tornado.

Related Questions

Alightning bolt hit a tree900m north from you. Then, 2 mslater, you see a lightning bolt hita tree 1200m east fromyou. A.Were the events simultaneous? B.Your friend was also standing and he saw thetwo lightning strikesat the exact same time. Where is yourfriend standing (assuming youare standing at the origin of yourreference frame)?
	You areout in a field onenight and see a lightning bolt hit a tree 900mdue north from you.Then, 2 ms later, you see a lightning bolthit a tree 1200m due eastfrom you. A.Were the events simultaneous? B.Your friend was also standing in the fieldand he saw the twolightning strikes at the exact sametime. Where is your friendstanding (assuming you are standingat the origin of your referenceframe)?

Picnickers see a lightning flash and hear the resulting thunder 8.5s later. If the storm is traveling at a rate of 19 km/h, how long,in minutes, do the picnickers have before the storm arrives attheir location? (Enter your answer to the nearest minute.)

A loud speaker has an input of 70. dB. If the volume of the soundis turned up so that the output intensity is 1,000 times greater,what is the new sound intensity level? in dB

A new jackhammer has a 1/10,000 reduction in sound intensity levelfrom that of the older model that was rated at 111 dB. What is thesound intensity level of the new hammer? in dB

An average factory has a sound intensity level of 80 dB, and a rockband has a sound intensity level of 110 dB. How many times greateris the sound intensity of the band than that of the factory?

In a thunderstorm, charge builds up on the water droplets or ice crystals in a cloud. Thus, the charge can be considered to be distributed uniformly throughout the cloud. For the purposes of this problem, take the cloud to be a sphere of diameter 1.00 kilometer. The point of this problem is to estimate the maximum amount of charge that this cloud can contain, assuming that the charge builds up until the electric field at the surface of the cloud reaches the value at which the surrounding air breaks down.This breakdown means that the air becomes highly ionized, enabling it to conduct the charge from the cloud to the ground or another nearby cloud. The ionized air will then emit light due to the recombination of the electrons and atoms to form excited molecules that radiate light. In addition, the large current will heat up the air, resulting in its rapid expansion. These two phenomena account for the appearance of lightning and the sound of thunder. Take the breakdown electric field of air to be $E_b = 3.00 \times 10^6 \;{\rm N/C}$ .

Q:

Estimate the total charge

on the cloud when the breakdown of the surrounding air is reached.

Express your answer numerically, to three significant figures, using $\epsilon_0=8.85 \times 10^{-12} \;\rm{C^2/(N \cdot m^2)}$ .
A:
in terms of Coulombs

plumelk226

MET 2010 Lecture Notes - Lecture 11: Mesocyclone, Atmospheric Pressure, Funnel Cloud

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