Teaching Third-Grade TEXT FEATURES Using · PDF fileTeaching Third-Grade TEXT FEATURES Using EXPLORING DANGERS IN SPACE: ... 3. Asteroids ... (Space Telescope Science Institute),
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Library of Congress Cataloging-in-Publication Data
Silverman, Buffy. Exploring dangers in space : asteroids, space junk, and more / by Buffy Silverman. p. cm. — (Searchlight Books™—What’s amazing about space?) Includes index. ISBN 978–0–7613–5446–8 (lib. bdg. : alk. paper) 1. Collisions (Astrophysics)—Juvenile literature. 2. Near-Earth objects—Juvenile
literature. 3. Asteroids—Collisions with Earth—Juvenile literature. 4. Comets—Collisions with Earth—Juvenile literature. 5. Space debris—Juvenile literature. 6. Meteoroids—Juvenile literature. I. Title.
QB466.C64S55 2012 551.3’9—dc22 2010046078
Manufactured in the United States of America1 – DP – 7/15/11
Chapter 1
SPACE ROCKS . . . page 4
Chapter 2
ASTEROIDS AND COMETS . . . page 9
Chapter 3
SMALLER SPACE OBJECTS . . . page 15
Chapter 4
CRATERS, CRASHES, AND DINOSAURS . . . page 22
Chapter 5
SPACE WATCH . . . page 30
Glossary 38Learn More about Asteroids, Space Junk, and More 39
Index 40
COPYRIGHT PAGE: This page tells you the year in which the book was published. This may be important for report writing when you need up-to-date information. On this page, you can also find the address of the publisher.
Glossary 38Learn More about Asteroids, Space Junk, and More 39
Index 40
CONTENTS PAGE: This lists the chapters in your book by chapter title and the pages on which they begin. The contents might also list features, such as the index, that are at the end of the book.
Many small space rocks orbit the Sun. Asteroids and comets
are much bigger. Some of their orbits bring them close to Earth.
ASTEROIDS AND COMETS
The asteroid in this drawing orbits near Earth. What is the name for another kind
of large space rock?
9
TEXT OR MAIN TEXT: These are the words and sentences that explain the main ideas. Main text looks different from chapter titles or captions.
CAPTION: These words tell you what is in the photo or picture on the page. A caption is usually close to the picture it goes with. Sometimes a caption will tell you if the picture is a photo or a drawing. A caption may also give you additional information that is not in the main text.
CHAPTER TITLE: This tells you what topic will be discussed in the chapter. Chapter titles often give you the main ideas of the book.
5
PHOTOS: The photos or pictures in a book show what the words, or the text, describe. Looking at photos can help you understand the meaning of the text.
Asteroids Asteroids are large, rocky objects that orbit the Sun. Astronomers think asteroids are the leftover material from when planets formed.
This is an artist’s idea of what the Sun looks like from the surface
of an asteroid.
10
HEADINGS AND SUBHEADINGS: These separate the main text into smaller chunks of information. A heading tells you what the section below it is about.
6
PAGE NUMBERS: Page numbers are on the lower part of most pages in a book. They tell you how far along you are in the book. They also help you find information from the index.
Glossaryasteroid: a large, rocky object that orbits the Sun
asteroid belt: an area in space where most asteroids travel. The asteroid belt is between the orbits of Mars and Jupiter.
astronomer: a scientist who studies outer space
atmosphere: the layer of gases surrounding a planet
comet: a chunk of ice. Dust and rocks are packed into the ice. Comets travel in long, oval orbits around the Sun.
gravity: a force that pulls objects together
impact crater: a mark left on a planet when an asteroid or a comet crashes into it
meteor: a meteoroid that has entered Earth’s atmosphere
meteorite: a meteor that has reached Earth’s surface
meteoroid: a small space rock that orbits the Sun
near-Earth asteroid (NEA): an asteroid that orbits close to Earth
orbit: the path an object takes as it travels around another object
satellite: a spacecraft used to send signals back and forth between Earth and space
spacecraft: a vehicle that carries people and supplies to outer space
space junk: satellites and other spacecraft that have stopped working
telescope: an instrument that makes faraway objects appear bigger and closer
38
GLOSSARY: This is a list of important new words that you have learned by reading the book. Each glossary word is in bold print. After the bold word is a phrase that tells the meaning of the word.
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BOLD PRINT: Words in bold print have thick, black letters. You might not know what these words mean. They are usually in the glossary.
Learn More about Asteroids, Space Junk, and MoreBooksFlorian, Douglas. Comets, Stars, the Moon, and Mars: Space Poems and
Paintings. Orlando, FL: Harcourt, 2007. Fun poems and paintings teach about outer space.
Sparrow, Giles. Destination Asteroids, Comets, and Meteors. New York: PowerKids Press, 2010. Take an imaginary journey through space to see asteroids, comets, and meteors.
Vogt, Gregory L. Meteors and Comets. Minneapolis: Lerner Publications Company, 2010. Learn more about meteors and comets in this lively and informative book.
WebsitesAsk an Astronomer for Kids!
http://coolcosmos.ipac.caltech.edu/cosmic_kids/AskKids/index.shtmlAstronomers answer common questions about asteroids, comets, and more.
Keeping an Eye on Space Rocks http://www.jpl.nasa.gov/multimedia/neo/spaceRocks.htmlDiscover how astronomers watch asteroids and comets on this site from NASA.
StarChildhttp://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level1/solar_system.htmlLearn more about asteroids, comets, meteoroids, and other parts of the solar system.
39
LEARN MORE: This is a list of books and websites on the same subject as the book you just read. The list is at the end of your book.
ITALIC: This type is slanted to make a word or a phrase stand out. Italicized words may be names of books, newspapers, movies, ships, or foreign words. They may also tell you which caption goes with which photo.
INDEX: This is an alphabetical list of words at the end of your book. The index tells some of the book’s main ideas. Each word is followed by page numbers. These numbers tell you where to go in the book to find that main idea.