viii UNIT 3: Force, Motion, and Energy 90 Lesson 1: Speed, Velocity, and Acceleration 92 Lesson 2: Balanced and Unbalanced Forces 99 Lesson 3: Newton’s Second Law of
Motion 103 Lesson 4: Newton’s First Law of
Motion 110 Lesson 5: Newton’s Third Law of
Motion 115 Lesson 6: Application of Newton’s Laws 119 UNIT 4: Earth and Space, Part 1 124 Lesson 1: Exploring the Electromagnetic Spectrum 126 Lesson 2: Distances in Space 134 Lesson 3: Components of the Universe 141 Lesson 4: Characteristics of Stars and the HR Diagram 147 Lesson 5: Movements through Space 156 Lesson 6: Seasons 162 Lesson 7: Moon Phases 170 Lesson 8: Tides 180 UNIT 5: Earth and Space, Part 2 192 Lesson 1: Unequal Heating in the Oceans 194 Lesson 2: Winds and Air Pressure 197 Lesson 3: Air Masses and Fronts 209 Lesson 4: Weather Maps 216
Motion 103 Lesson 4: Newton’s First Law of
Motion 110 Lesson 5: Newton’s Third Law of
Motion 115 Lesson 6: Application of Newton’s Laws 119 UNIT 4: Earth and Space, Part 1 124 Lesson 1: Exploring the Electromagnetic Spectrum 126 Lesson 2: Distances in Space 134 Lesson 3: Components of the Universe 141 Lesson 4: Characteristics of Stars and the HR Diagram 147 Lesson 5: Movements through Space 156 Lesson 6: Seasons 162 Lesson 7: Moon Phases 170 Lesson 8: Tides 180 UNIT 5: Earth and Space, Part 2 192 Lesson 1: Unequal Heating in the Oceans 194 Lesson 2: Winds and Air Pressure 197 Lesson 3: Air Masses and Fronts 209 Lesson 4: Weather Maps 216
