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Unit 2: Earth Science


Chapter 5: Earth's Weather

Lesson 1: Earth's Atmosphere
Lesson Summary:

The air in Earth’s 
atmosphere has weight 
and presses on all the 
objects it surrounds.

The properties of air are 
that it has weight, takes up 
space, and exerts pressure. 

Changes in volume, 
temperature, humidity, or 
altitude can change air 
pressure.

Two types of barometers 
are used to measure 
atmospheric pressure. 

Vocabulary 
  • atmosphere
  • troposphere
  • air pressure
  • altitude
  • humidity
  • barometer

Resources
Study Jams Weather and Climate 
Earth's Atmosphere Study Jams
Textbook Link 


Lesson 2: Air Currents and Winds
Lesson Summary: 
5 ES 4.a
When air is heated 
unevenly it moves around, 
causing winds and air 
currents.
The Sun heats Earth’s 
atmosphere unequally. 

Air moves from an area of 
high pressure to an area 
of low pressure. 

Global winds are 
predictable, blow steadily, 
and blow over long 
distances. 
Vocabulary 
  • convection
  • global wind


Resources
Textbook Link 
Study Jams Air Pressure and Wind 



Lesson 3: Oceans and Air Temperature
Lesson Summary:
5 ES 4.b
Ocean water helps 
determine the weather 
and climate of nearby 
land. Earth’s oceans keep 
Earth’s temperatures 
moderate. 

Ocean currents move 
heat and water around the 
Earth.

An El Niño can cause 
weather changes over a 
large area.
Vocabulary 
  • climate
  • current


Resources
Textbook Link 
Study Jams Oceans
Ocean Current Brain Pop



Lesson 4: Severe Weather
Lesson Summary: 
5 ES 4.c
Storms are caused by the 
collision of air masses 
that have different 
temperatures and 
humidities. 

When air masses with 
different temperatures 
and moisture levels meet, 
they cause changes 
in air pressure and in 
weather that can lead to 
thunderstorms. 
 
Cyclones, such as 
hurricanes and tornadoes, 
are storms with a low 
pressure center that cause 
a circular pattern of winds 
to form.

Other types of severe 
weather include monsoons 
and fog.
Vocabulary 
  • air mass
  • front
  • thunderstorm
  • tornado
  • low pressure closure
  • hurricane
  • storm surge
  • cyclone
  • monsoon

Resources
Textbook Link 
Study Jams Severe Storms 
Typhoon Haiyan
Weather Word Search 
Understand Hurricanes 
What Happens in a Hurricane 

Lesson 5: Predicting the Weather
Lesson Summary:
5 ES 4.d
Weather maps tell you 
what the weather is 
and help you predict 
tomorrow’s weather.

Weather maps contain 
data that is used to predict 
weather. 

Movements of masses of 
air with different pressures 
bring changes in weather. 

Weather data comes 
from observations and 
instruments.  
Vocabulary 
  • forecast
  • meteorologist
  • weather map 

Resources
Textbook Link 
Weather Instruments 
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