深海潜水员PDF电子书下载

Crittercam 6

Reading Objectives 6

Crittercam 7

Making a Crittercam 9

Penguin Crittercam 12

Whale Crittercam 14

Lion Crittercam 15

Lots More to Learn 16

How We Learn About SpaceReading Objectives 18

What's in Space? 19

Telescopes 20

Sending People Into Space 24

Space Stations 26

Space Probes 30

Looking Ahead 32

Making Special EffectsReading Objectives 34

Visual Effects 36

Computer Effects 44

Sound Effects 46

Divers of the Deep SeaReading Objectives 52

The Oceans 53

Divers Go Deeper 56

Diving Ships Go Deeper 64

A History of Deep Sea Dives 72

Review ActivitiesThink and Discuss 74

Multiple-Choice Test 76

Index 80