Course Content Unit: Forces Acting on Structures and Mechanisms 22 Activities Expand Lesson Content Lesson 14 – Tornado Alert! Lesson 07 – Experiment: Plastic Straw Bridge Challenge Lesson 04 – Experiment: Materials and Internal Forces Lesson 20 – Protect Yourself! Lesson 22 – Why Igloos Work Lesson 21 – Structures and the Environment Lesson 19 – The Great Ice Storm of 1998 Lesson 18 – Tsunami: Killer Waves Lesson 17 – Tsunami Alert! Lesson 16 – Volcanoes Lesson 15 – Avalanches and Landslides Lesson 01 – Two Basic Forces: Pushing and Pulling Lesson 13 – Hurricanes Lesson 12 – Exploring Earthquakes Lesson 11 – Earthquake! Lesson 10 – Watch Out for Wind! Lesson 09 – Canada’s Longest Bridge Lesson 08 – The Incredible Chunnel Lesson 06 – Four Types of Bridges Lesson 05 – Forces and Shapes Lesson 03 – Four Types of Internal Forces Lesson 02 – Forces and Structures
