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Flashcards in Unit 1 Deck (55):

What gas makes up 78% of the air



What is weather

The state of the atmosphere at a given time and place


How does a thermometer work

The Liquids and solids will expand when heated


What is a meteorologist

People Who study the daily weather and forecast


99% of the weight in the atmosphere is found with in how many miles

The first 20 miles or 32 km Off the surface


What percent of the suns energy is absorbed by earths surface



How much of the suns energy is absorbed by the atmosphere



How much of the songs energy is reflected back into space



Which way do Isotherms over the land bend during the winter

Tward the poles


What’s chart would you use to see if there is a danger of frost bite

A wind chill chart


Beufort scale

This is a scale that determines how fast the wind blows from your observations on land or water


Why and when do temperature of inversions happen

They happen because of conduction and on clear dry nights when the temperature drops quickly


When are temperature inversion destroyed

Late morning


When is the sun hottest, when is the earth hottest, why are these different

The sun is hottest around noon however the hottest time of day is around 3 or 4 o’clock. This is because the ground is still not at its hottest


Define temprature range

The difference between the highest and lowest temperatures of the day


Why does the stratosphere’s temperature rise with altitude

This is because of the presence of ozone


Describe the troposphere

This is the lowest layer nearest to the surface this is where gases that are essential to life are this is where weather occurs in temperature increases an increase in altitude This is because the gases absorb very little of the incoming solar radiation instead the ground absorbs this radiation and then heat the tropospheric air by conduction and convection


Describe the stratosphere

This layer is found around 31 miles from the surface it is clear dry with study winds very few weather changes this is where jet Aircrafts fly temperature increases with altitude because ozone is heated by radiation from the sun which is warmer than the rest of the air and sits above the denser cooler air


Describe the mesosphere

This is a layer that is 51 miles high temperature decreases with an increase of altitude the ionosphere begins here and stretches a poured into the Thermosphere the top portion is known as the meso paws were temperature stays constant


Describe thermosphere

Reaches from the meso paws to 310 miles high temperature increases with an increase in altitude this is due to nitrogen and oxygen atoms here absorbing solar energy


Describe the ionosphere

Directions from the lower mesosphere to the top of the thermosphere Ions or charged atomic particles are concentrated in this region this is where radio waves are transmitted


What are the two greenhouse gases

Carbon dioxide and water vapor


What causes excess carbon dioxide to be released into the atmosphere

The burning of fossil fuel’s


Describe the green house affect

Greenhouse gases let in the sun‘s UV rays which are longer wavelengths and do not let out this earth infrared energy which is a shorter wavelength Causing the earth to heat up


What can we do to stop emitting access carbon dioxide into the atmosphere

Stop burning fossil feels and example of this would be using alternative energy sources


What can we do to reduce the current amount of carbon dioxide in the atmosphere

Plant more trees


What are the three ways heat is transferred in the atmosphere

Conduction convection and radiation


Name the four reasons why water warms more slowly than land

The first reason is because the suns rays penetrate deeper into the water also water spread the heat more easily also some energy is used in evaporation lastly water needs more energy to rise itself 1°


What does a falling barometer mean

Rainy weather, more clouds stronger winds Warmer. This is because warm air is more spread out causing it to be less dense which also causes the air pressure to go down. Since it is warmer this means more evaporation which means more clouds and more precipitation


What is an anemometer

This is a device that measures wind speed


Wind vane

This is a device that measures wind direction


Describe why the hottest temperatures can be found as high as 30° North l

This is because land heats up faster than water


Describe why seabreezes forms

This is because during the day the land heats up faster than the water causing high pressure over the water and low pressure over the land and since when does from high-pressure to low-pressure the wind blows from the sea onto the land


Describe how local winds form

This is because at night the land temperature drops Faster than the water causing high pressure over the land and low pressure of the water and since wind blows from high-pressure to low-pressure the wind blows from Atlanta to the sea


Why does air at the poles sink

This is because it is cold causing the air to be high pressure


What are the standard sea level pressure’s in both millibars and inches

101.3 to millibars and 29.92 inches



This is an instrument that measures and records air pressure on a graph


Due to the Coriolis effect which way does the wind turn in the northern hemisphere



Due to the Coriolis affect which way does the wind turn in the southern hemisphere

To the left


Describe the Coriolis effect

Because of earths rotation when’s that blow long distances turn slightly to the right in the northern hemisphere and slightly to the left in the southern hemisphere


Describe pressure and what causes air pressure

Pressure is force per unit area. Air pressure is created because of the weight of the molecules above


Which way does air pressure push

Equally in all directions


How Wide are isobars on a map

930 miles or 1500 km wide


Describe isobars

Lines on a map that Connect places with the same air pressure


Describe isotherms

Lines on a map that connect places with the same temperature


What are the main two reasons why air pressure changes

Temperature and humidity


Describe doldrums/ITCZ

This is the low pressure equator belt with hot humid air that slowly rises


Describe the horse latitudes or subtropical highs

High pressure belts with dry air in little wind at 30° latitude


Describe the polar highs

Very cold and are at 90° latitude and are high pressure


Describe the prevailing southwesterlies

These are the winds that blow from 30° 60° in the northern hemisphere


Describe the prevailing north westerlies

This is a wind that blows from 30° to 60° in the southern hemisphere between the horse latitudes and the sub polar Lows


Where are the sub polar Lows

These are a low pressure belt found at 60°


Describe the north and south east trades

These are winds that blow from 30° 0° or between horse latitudes and the doldrums


Describe the polar easterlies

These are winds that blow from 90° to 60°


What are the two things we do that Contribute to climate change

Burn fossil fuel’s and use CFCs