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Fronts

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Fronts

Front: boundaries of air masses Differ by temperature, density, and humidity

• The weather we experience depends on which front is dominant 
• Fronts bring precipitation

Cold Front

• A Cold air masses pushes a warm air mass upward
• The air & weather becomes cooler
• Heavy precipitation and storms follow
• Tall cumulonimbus clouds form because the wind is pushing air & water vapor upward

Multiple Choice

During a cold front you are likely to experience...

• Thunderstorm

• Light drizzle

• Sunny Weather

Warm Front

• A warm air mass overtakes a cold air mass
• The temperature warms as cold air is pushed back
• Water vapor causes high humidity
• Precipitation is milder (ex. drizzles)

Multiple Choice

A warm front...

• replaces warm air with cool air

• replaces cool air with warm air

Stationary Front

• A warm and cold air mass meet trying to move in opposite directions
• Neither is moved
• Heavy storms & precipitation can last for days

Multiple Choice

True or False: Stationary fronts try to move in the opposite direction, while occluded fronts move in the same direction

• True

• False

Occluded Front

• A warm air mass is caught between 2 cold air masses
• Cold air masses rise over the warmer
• Strong winds and heavy precipitation result

Multiple Choice

All fronts are associated with which pressure system?

• High

• Low

Multiple Select

Which front causes precipitation? (Check all that apply)

• Cold

• Warm

• Stationary

• Occluded

Multiple Choice

Which front has the densest air?

• Occluded

• Stationary

• Cold

• Warm

Air Masses:

• Air masses are formed by the HEATING and COOLING of land and water. 

• Air masses are large bodies of air that have the same TEMPERATURE and MOISTURE level throughout.

• There are FOUR (4) types of air masses:

  - CONTINENTAL POLAR (cP)

  - CONTINENTAL TROPICAL (cT)

  - MARITIME POLAR (mP)

  - MARITIME TROPICAL (mT)

• The INTERACTION between air masses can impact WEATHER, CONVECTION CURRENTS and WIND.

• 
  

Multiple Choice

Air masses are formed by the ________ and ________ of land and water.

• Heating and cooling

• Increasing volume and temperature

• cooling and increasing pressure

• Heating and increasing the density

Multiple Choice

The INTERACTION between air masses can impact,

• WEATHER,

• CONVECTION CURRENTS

• WINDS.

• All of the above

Multiple Choice

High pressure will usually bring what kind of weather?

• Clear skies

• Cloudy

• High humidity

Multiple Choice

What type of front is shown?

• Warm Front

• Cold Front

​Cold Fronts

​Cold air pushes underneath warm air. Clouds collect and make heavy thunderstorms and precipitation.

Multiple Choice

This is a Warm front. Do you expect the weather to be more intense or less intense?

• More

• Less

​Warm Fronts

​CLoud cover moves over the cold front. Clouds spread out

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​Weather lasts longer but is more intense.

Weather and Climate

Explain the geographic factors that influence the movement of groups of people in the world.

I can compare and contrast weather and climate accurately and list factors that affect climate.

Determine the meaning of words and phrases in oral presentations and literary and informational text.

I can define Weather and Climate accurately.

Weather

Weather is the short-term changes in the air for a given place and time. For example: if it is raining outside your window right now, that is the weather.

Open Ended

Look outside your window.

What is the weather like right now?

Climate

Climate is a region's average weather conditions over a long period of time. For example: if summers are usually hot and muggy, it tells you something about climate.

Open Ended

We live in Yakima, Washington.

What are some words you might use to describe our climate during the summertime.

Multiple Choice

"It snowed last night."

Is this talking about Weather or Climate.

• Weather

• Climate

Multiple Choice

"It is usually freezing cold in the winter and very hot in the summer in Yakima, Washington."

Is this talking about Weather or Climate?

• Weather

• Climate

Open Ended

Explain one or more differences between weather and climate. USE COMPLETE SENTENCES.

Factors that effect Climate

• Sun

• Location

• Wind

• Water

• Mountains

Sun and Location

Because of Earth's tilt, movement and shape different places on Earth receive different amounts of sunlight.

Multiple Choice

What is it called when the Earth spins on its axis?

• Revolution

• Rotation

Multiple Choice

What is it called when the Earth revolves around the Sun?

• Rotation

• Revolution

Multiple Choice

Does warm air rise or sink?

• Rise

• Sink

Mountains

Even in warm places, mountains will have snow on them because it is colder at a higher elevation. They also create wet and dry areas by forcing the air pushing against it to rise. As the air rises, it cools and causes the moisture in the air to fall. This side of the mountain is often green and lush. Once the air gets to the other side of the mountain it sinks and has little moisture left creating a dry side.

Open Ended

List at least three of the five factors that affect climate.

Multiple Choice

What is the major cause of ocean waves?

• wind

• ocean salinity

• Earth’s rotation

• the Moon’s gravity

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Multiple Choice

Which statement best describes how a meteorologist predicts the weather for an area?

• The meteorologist searches the internet for information about the weather.

• The meteorologist speaks with other meteorologists and asks their opinions.

• The meteorologist makes a prediction using a variety of weather sources and date.

• The meteorologist watches the way animals behave for clues about the weather.