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Dạy Tiếng Anh cho trẻ không phải là luôn luôn bắt con phải ngồi trên bàn học và chiến đấu với những cuốn sách dày cộm. Có rất nhiều cách học để nâng cao vốn hiểu biết tiếng Anh cho bé như qua sách truyện, phim ảnh hay chơi các trò chơi về Tiếng Anh. Đặc biệt với kho tàng tài liệu Tiếng Anh khổng lồ trên mạng Internet, các bố các mẹ hãy tận dụng để trẻ có những khoảng thời gian học Tiếng Anh vừa vui vẻ lại vừa bổ ích. Thủ thuật máy tính đã sưu tầm được rất nhiều nguồn tài liệu Tiếng Anh trẻ em vô cùng thú vị, các bố các mẹ hãy tham khảo nhé

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Solar

System

Lesson 1

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Copyright © by Harcourt, Inc.

All rights reserved No part of this publication may be reproduced or transmitted in

any form or by any means, electronic or mechanical, including photocopy, recording,

or any information storage and retrieval system, without permission in writing from the

publisher

Requests for permission to make copies of any part of the work should be addressed to

School Permissions and Copyrights, Harcourt, Inc., 6277 Sea Harbor Drive, Orlando,

Florida 32887-6777 Fax: 407-345-2418.

HARCOURT and the Harcourt Logo are trademarks of Harcourt, Inc., registered in the

United States of America and/or other jurisdictions.

Printed in the United States of America

ISBN-13: 978-0-15-349196-2

ISBN-10: 0-15-349196-5

1 2 3 4 5 6 7 8 9 10 179 15 14 13 12 11 10 09 08 07 06

If you have received these materials as examination copies free of charge, Harcourt

School Publishers retains title to the materials and they may not be resold Resale of

examination copies is strictly prohibited and is illegal.

Possession of this publication in print format does not entitle users to convert this

publication, or any portion of it, into electronic format.

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Visit The Learning Site!

www.harcourtschool.com

Orlando Austin New York San Diego Toronto London

Lesson 1

What Is the Sun? 2

The Solar System

Lesson 1

1

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star

sun

fusion

the Sun?

2

A star looks like a point of light in the night sky.

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The sun is the large star We can see it

during the day

Most of the sun’s energy comes from

fusion Two hydrogen atoms fuse and

make a helium atom

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READING FOCUS SKILL

MAIN IDEA AND DETAILS

The main idea is what the text is mostly about

Details are pieces of information about the main idea.

Look for details about the sun and how it produces energy

Stars

A star is a huge ball of very hot gases The sun is the star at

the center of our solar system From Earth, the sun looks like a

large ball of light

The sun is the source of most energy on Earth Without the sun, life on Earth could not exist

Scientists classify stars by size, temperature, and color The sun is an average size star It is the largest body in the solar

system The sun has a medium temperature

Tell one detail about the sun.

The sun is a huge ball of gases.

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Features of the Sun

The sun has several layers At the center of the sun is the

core Most of the sun’s mass is in the core The other layers are

the radiation zone, the convection zone, and the photosphere

The photosphere is the surface of the sun Above the

photosphere is the sun’s atmosphere

Name one layer of the sun

The photosphere is the surface of the sun.

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How the Sun Produces Energy

Like other stars, the sun is made up of gases These gases are mostly hydrogen and helium The sun’s energy comes from

fusion Fusion is the joining of small particles into larger ones.

The temperature at the center of the sun is about

15 million ºC (27 million ºF) Under pressure, hydrogen

atoms smash into each other This produces helium and

energy The sun releases the energy as light and heat

What is the temperature at the center of the sun?

6

Fusion occurs in the sun’s core.

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Complete this main idea statement.

1 The is the star at the center of our solar

system

Complete these detail statements.

2 The sun is made up of gases, mostly and

3 The sun releases as light and heat.

4 The sun’s energy comes from That is the

combining of small particles into larger ones

Review Review

7

Core

Radiation Zone

Convection Zone

Photosphere

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GLOSSARY

fusion [FYOO•zhuhn] The energy-producing reaction that

occurs inside stars

star [STAR] A huge ball of very hot gases in space

sun [SUHN] The star at the center of the solar system

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Think About the Reading

1 What can you do to help you remember what you have learned

about the sun?

2 What questions do you have after reading this book? How can

you find the answers to your questions?

Hands-On Activity

Make a work of art showing the sun and stars You can show the color

range of stars Show that many stars are visible in the night sky.

School-Home Connection

Explain to a family member what you have read about the sun Ask a

family member to describe the size of the sun in the sky at noon and of

stars at sunset.

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