D2. Exploring and Understanding Concepts
Specific Expectations
By the end of Grade 5, students will:
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Forces Acting on Structures
D2.1
identify internal forces acting on a structure, and describe their effects on the structure
D2.2
identify external forces acting on a structure, and describe their effects on the structure
D2.3
describe forces resulting from natural phenomena that can have severe consequences for human-built structures, and identify structural features and materials that can allow such structures to withstand these forces
D2.4
describe ways in which physical characteristics of various animal and plant species help to protect them from potentially harmful effects of forces
D2.5
describe ways in which protective equipment helps to protect humans from potentially harmful effects of forces