《英语科普阅读文选1》

Contents1

1．The Size of the Universe1

2．The Stages of a Rocket4

3．Mathemagic7

4．Light10

5．What Is It ？13

6．How Does Water Help Make Our Weather？17

7．The Speed of Sound20

8．Expansion and Contraction of Solids23

9．Solar Energy27

10．Volcanoes30

11．The English of Science34

12．Sonar38

13．Where Is Tomorrow？43

14．An Ocean of Air47

15．Wind51

16．Time and Calendar54

17．Our Food57

18．Carbon Dioxide and Respiration61

19．Measuring Temperature65

20．The Importance of Rivers70

21．Why Roses Are Red74

22．A Trip to the Moon（Ⅰ）78

23．A Trip to the Moon（Ⅱ）82

24．You Push It，It Pushes You86

25．Gravitation Everywhere90

26．Heat94

27．Living in the Atomic Age97

28．Dangers in Space102

29．A Blanket for the Earth106

30．Weight and Mass110

31．The Sun113

32．The Food Factory117

33．Fresh Water Factories122

34．The Cell，the Body'S Building Material126

35．What Holds a Satellite in Orbit133

36．A Ruler to the Stars136

37．Molecules，Atoms and Particles142

38．Atoms Work for You146

39．The Limits of the Environment150

40．Collecting Heat from the Sun157