UNIT X UNIT 1 | 31 B Use the vocabulary Ask volunteers to provide definitions for the vocabulary words in the box. Read each sentence frame. Give students time to complete the activity. ANSWERS 1. breeze; 2. rises; sinks; 3. evenly; 4. atmosphere; 5. expands C Interpret a diagram Read the directions aloud. Model finding and completing the first answer from the text Windy Weather. Then direct students to complete Activity C in pairs. Call on volunteers to share their answers. ANSWERS 1. Warm air rises from the ground and expands. It creates a low-pressure area. Cooler air creates a high-pressure area and moves into the low-pressure area to create wind. 2. The area where the palm tree and sun are is a low-pressure area. A low-pressure area is formed when the warm air rises from the ground. 3. The area over the ocean is a high-pressure area. A high-pressure area is formed when air cools off and sinks. D Discuss ideas Read and discuss the question. In pairs, students discuss their ideas and write their answers. ANSWERS Sample answer: Meteorologists study wind so they can predict severe weather, like tornadoes and hurricanes. E Connect with self Read and discuss the directions. In pairs, students brainstorm their answers to the questions. Then they write their answers. ANSWERS Sample answer: Wind helps me feel cool when it’s hot outside. Wind blows down trees and causes damage to houses. I can fly a kite on a windy day. I can’t plant tiny seeds on a windy day. Practice Book p. 16 Assessment Program p. 8 COMMUNICATE PRACTICE FORMATIVE ASSESSMENT DIFFERENTIATED INSTRUCTION Scaffold Place the new vocabulary words and their definitions on the board or word wall for students to refer to for Activity B: atmosphere – the layers of gas that surround a planet; breeze – a light wind; evenly – equal amounts; expands – gets bigger; rises – moves to a higher position; sinks – drops lower. Amplify Have students bring in materials to design and/or create small kites. Each student can present their design or kite to the class. Talk and write: The wind State two ways wind can be helpful and two ways wind can be a problem. Choose a new word from the lesson. Write a sentence using the word. B Use the vocabulary Complete each sentence with a word from the box. atmosphere breeze evenly expands rises sinks 1. A light wind is called a . 2. Warm air and cool air . 3. The Sun warms the air and the ground, but it doesn’t warm them . 4. The air around Earth is called the . 5. When something gets bigger, it . C Look at the diagram on page 30. 1. Describe how wind forms. 2. Describe a low-pressure area in the diagram. How do you know this is a low-pressure area? 3. Describe a high-pressure area in the diagram. How do you know this is a high-pressure area? D Discuss Why do you think meteorologists study wind? E Making connections How does wind affect your life? What can you do on a windy day? What can’t you do? UNIT 1 31 UNIT 1 / CONNECT TO SCIENCE
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