Introduction vii Chapter 1: An Overview of the ACT Science Test 1 Passage Types 1 Overall Test Structure and Content Coverage 2 Science Content Coverage 2 Reporting Categories 3 Test Timing and Time Management 4 Format of this guide 5 Chapter 2: Data Representation Passages 7 Passages on the ACT Science Test 7 What You Can Expect from a Data Representation Passage 9 Trying Your Hand at a Data Representation Passage 11 Summary 21 Chapter 3: Research Summaries Passages 23 What You Can Expect from a Research Summaries Passage 23 How You Should Approach a Research Summaries Passage 24 Trying Your Hand at a Research Summaries Passage 26 Sample Question Answers and Analysis 32 Summary 36 Chapter 4: Conflicting Viewpoints Passages 39 What You Can Expect from a Conflicting Viewpoints Passage 39 Trying Your Hand at a Conflicting Viewpoints Passage 41 Summary 50 Chapter 5: Reporting Category: Interpretation of Data 53 Understanding What a Reporting Category Is 53 Interpretation of Data 55 Summary 69 Chapter 6: Reporting Category: Evaluating Models and Scientific Arguments with Evidence 71 Evaluating Models and Scientific Arguments with Evidence 72 Summary 84 Chapter 7: Reporting Category: Scientific Investigation 85 Scientific Investigation 86 Summary 93 Chapter 8: Science Basics 95 Understanding What Science Is on the ACT 95 Understanding What the Scientific Method and the Process of Science Are 96 Steps of the Scientific Method 97 Experimental Design 100 Summary 105 Chapter 9: Graphs and Charts on the ACT Science Test 107 Reading Graphs 107 Understanding Data Shown in Tables 111 Relationships Shown in Graphs and Data Sets 113 Summary 117 Chapter 10: Scientific Units and Measurements 119 Units in Science 119 The International System of Units (SI) 119 Units and Measures on the ACT Science Test 122 Summary 124 Chapter 11: Science Vocabulary 125 The Vocabulary of Science 125 General Scientific Terms 126 Subject-Specific Terminology 129 Chemistry Terminology 129 Concentration, pH, and Acid-Base Titrations 132 Biology Terminology 133 Physics Terminology 139 Properties of a Wave and the Electromagnetic Spectrum 140 Earth and Space Science Terminology 141 Summary 147 Chapter 12: Practice Questions 149 Chapter 13: Answers and Explanations 305 Answer Key 306 Explanatory Answers 308.