Download Unit 7 Lesson 1

Unit 7 Lesson 1 What Is Weather?
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Unit 7 Lesson 1 What Is Weather?
Weather Watch
• Look outside. Is the sun out? Is the air warm or
cool?
• Are there any clouds? Do you feel any wind?
• Wind is air that moves.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 7 Lesson 1 What Is Weather?
Weather Watch
• Weather is what the air outside is like.
• Weather may change during the day.
• It may also change from day to day and from
month to month.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 7 Lesson 1 What Is Weather?
Measure It!
• You can use tools to measure weather.
• Temperature is the measure of how hot or cold
something is.
• A thermometer is a tool that measures
temperature. Temperature is measured in
degrees.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 7 Lesson 1 What Is Weather?
Measure It!
• Rain, snow, sleet, and hail are forms of water that
fall from the sky.
• A rain gauge is a tool that measures how much
water falls.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 7 Lesson 1 What Is Weather?
Measure It!
• How can these tools help you know what the
weather is outside?
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 7 Lesson 1 What Is Weather?
Predict It!
• Scientists observe and track weather over time.
• They look for changes in weather.
• They use tools to learn what the weather may be.
• Some scientists use weather satellites and
weather balloons to help them track weather.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 7 Lesson 1 What Is Weather?
Predict It!
• Scientists use what they learn to make a weather
report.
• A weather report helps people get ready for the
coming weather.
Copyright © Houghton Mifflin Harcourt Publishing Company
Unit 7 Lesson 1 What Is Weather?
Predict It!
• How might this weather report affect what you
may do or what you may wear?
Copyright © Houghton Mifflin Harcourt Publishing Company