Download PHY2253 Chapter 20 Reading Worksheet STATEMENT ANSWER

PHY2253 Chapter 20 Reading Worksheet
How Well Have You Read Chapter 20? Use this worksheet as a guide in your reading of Chapter 20. If you use
this worksheet correctly, it will also serve as a nice study guide for this chapter. Complete the “Answer” column
using words and phrases from your textbook. In the column labeled “page number”, enter the page Shipman text
where the answer to the item is first found. For each True/False question, I suggest you also explain the reasoning
in the answer column, so that when you look back on this to study, you remember why you chose ‘true’ or ‘false’.
STATEMENT
form from supercooled vapor
condensing on hygroscopic nuclei.
What are three types of hygroscopic nuclei
commonly found in the air?
TRUE or FALSE: It is possible for liquid water that is
supercooled to coalesce without foreign particles.
The formation of larger water drops resulting from
collisions between smaller drops is called
.
The natural mixing of ice crystals and supercooled
vapor that results is precipitation is called the
process.
Modern day rainmaking is done by seeding the
clouds with what chemical compound?
is the most common form of
precipitation in the lower and middle latitudes.
When the dew point is below zero degrees, water
vapor freezes and results in
.
TRUE or FALSE: Rainmaking dates by to times
earlier than the 1890s.
The layered stones of ice produced by repeated
vertical ascents of ice pellets are called
.
When cooled water vapor changes directly into ice
when it condenses on an object
forms.
Frozen rain pellets falling directly from a cloud is
called
.
TRUE or FALSE: Frost is just frozen dew.
A large body of air that has different properties
from the surrounding air is called an
.
Temperature and
are the
main characteristics used to identify air masses.
TRUE or FALSE: Once an air mass forms, its
properties will not change as is moves over new
regions of air.
An air mass that is warmer than the land surface
over which it moves is called a
air mass.
An air mass that is cooler than the land surface over
which it moves is called a
air mass.
and
are the two
labels given to describe the surface of the source
region over which an air mass moves.
ANSWER
PAGE #
PHY2253 Chapter 20 Reading Worksheet
Name the four labels (and their abbreviations)
given to describe air mass latitudes.
In terms of air mass sources, the United States lies
primarily in the
region.
The boundary between two air masses is called a
.
TRUE or FALSE: Cold fronts have sharper
boundaries than warm fronts.
A warm front moving into a region would be
indicated by the presence of
.
The graphical symbols used for weather mapping
use a line of sharp triangles for a
front.
Weather mapping symbols for an
front
would show alternating round and triangular
shapes along the same side of the front line.
When a warm front advances under a cold front
a
occlusion will result.
Two fronts moving in opposite directions can meet
and become an unmoving
front.
TRUE or FALSE: Cyclones and anticyclones are
exactly the same thing.
Electric charges resulting between clouds and
water droplets can cause
.
A
is a rainstorm with thunder,
lightning, and sometimes hail.
What kind of clouds cause thunderstorms?
What percentage of lightning occurring in the
atmosphere actually reaches Earth?
Lightning that occurs behind clouds or below the
horizon is called
lightning.
TRUE or FALSE: It is completely safe to talk on a
telephone during a lightning storm.
If the energy from lightning heats the surrounding
air to temperatures greater than
degrees,
a loud clap of
can be heard.
TRUE or FALSE: It is possible to have lightning and
thunder during a snowstorm.
If you hear thunder 7 seconds after seeing a
lightning flash, about how many miles away is the
center of the storm?
Rain that falls as liquid and freezes on contact with
surfaces is called
.
A snowstorm that is accompanied by high winds is
caused a
.
If the temperature outside is 40 degrees F with a
wind speed of 25 mph, what is the wind chill?
PHY2253 Chapter 20 Reading Worksheet
TRUE or FALSE: It is possible for the temperature to
be too cold for snow to fall.
A whirling funnel cloud produced from a
thunderstorm is called a
.
A tornado with wind speeds I excess of 200mph is
rated as an
on the Fugita Scale.
Most tornados in the United States occur in the
, the flat region between the
Appalachian and Rocky mountains.
TRUE or FALSE: April, May, and June are considered
to be the peak tornado months in the central U.S.
A tornado watch means conditions are favorable
for a tornado, but a
means one has
actually been spotted.
When the wind speed of a tropical storm exceeds
74 mph, the storm is called a
.
TRUE or FALSE: Cyclones, typhoons, hurricanes, and
willy-willys are the same kind of storms over
different regions of the world.
Peak hurricane season in the United States is in
what month?
The most damaging hurricane on record to hit the
Units States was
.
The great dome of water that moves onto land
when a hurricane makes landfall is called the
.
A category 5 hurricane has wind speeds greater
than
mph.
An atypical contribution to the atmosphere that
results from human activities is called
.
The burning of
causes most of the
atmospheric pollution on Earth.
Smoke mixing with fog is called
.
When temperature increases with altitude rather
than following the lapse rate, this is called
.
What 3 fossil fuels are responsible for post of our
air pollution?
What is worse for the environment: complete or
incomplete combustion of fossil fuels?
Smog formed from interactions between chemical
products and sunlight is called
.
TRUE or FALSE: Ozone is oxygen with an extra O
atom.
Rain that is excessively acidic due to nitrogen oxide
and sulfur dioxide is called
.
The major source of air pollutants is
.
PHY2253 Chapter 20 Reading Worksheet