Grade 7 Structures and Forces Study Guide (Topic 1-4) PDF
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This document provides a study guide for Grade 7 students on structures and forces. It includes definitions, natural and manufactured structures, structural designs, materials selection, and strengthening techniques covered across 4 topics, focusing primarily on practical application and understanding of mass, weight, and force diagrams.
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### **Grade 7 Structures and Forces Study Guide (Topic 1-4)** #### **Topic 1 -- Types of Structures** - **Definition of Structures** - Serve a definite purpose or function. - Must resist \_\_\_\_\_\_\_\_\_\_\_\_ to maintain shape and size. - **Types of Structures** - **Na...
### **Grade 7 Structures and Forces Study Guide (Topic 1-4)** #### **Topic 1 -- Types of Structures** - **Definition of Structures** - Serve a definite purpose or function. - Must resist \_\_\_\_\_\_\_\_\_\_\_\_ to maintain shape and size. - **Types of Structures** - **Natural Structures**: \_\_\_\_\_\_\_\_\_\_\_\_ in the environment. - **Manufactured Structures**: Built by people and often \_\_\_\_\_\_\_\_\_\_\_\_. - **Structural Designs** - **Mass Structures** - Made by \_\_\_\_\_\_\_\_\_\_\_\_. - Examples: \_\_\_\_\_\_\_\_\_\_\_\_. - **Key elements**: - \_\_\_\_\_\_\_\_\_\_\_\_. - \_\_\_\_\_\_\_\_\_\_\_\_. - \_\_\_\_\_\_\_\_\_\_\_\_. - \_\_\_\_\_\_\_\_\_\_\_\_. - **Frame Structures** - A framework supports \_\_\_\_\_\_\_\_\_\_\_\_. - Examples: \_\_\_\_\_\_\_\_\_\_\_\_. - **Types of walls**: - **Load-Bearing Walls**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Partition Walls**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Shell Structures** - Maintain shape without \_\_\_\_\_\_\_\_\_\_\_\_. - Examples: \_\_\_\_\_\_\_\_\_\_\_\_. - **Challenges**: - \_\_\_\_\_\_\_\_\_\_\_\_ can lead to failure. - \_\_\_\_\_\_\_\_\_\_\_\_ can cause cracks. - \_\_\_\_\_\_\_\_\_\_\_\_ are harder to form. - **Combination Structures**: Include elements of \_\_\_\_\_\_\_\_\_\_\_\_ (e.g., \_\_\_\_\_\_\_\_\_\_\_\_). #### **Topic 2 -- Describing Structures** - **Key Design Considerations**: - **Function**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Safety**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Cost**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Aesthetics**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Materials Selection** - Properties must \_\_\_\_\_\_\_\_\_\_\_\_. - Examples: - **Layered materials**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Woven materials**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Joints** - **Mobile Joints**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Rigid Joints** (F-I-T-A-M): - **Fasteners**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Interlocking Shapes**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Ties**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Adhesives**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Melted Materials**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Strengthening Techniques** - **Corrugation**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Lamination**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Reinforcement**: \_\_\_\_\_\_\_\_\_\_\_\_. #### **Topic 3 -- Mass and Forces** - **Mass**: The amount of \_\_\_\_\_\_\_\_\_\_\_\_ in an object (measured in \_\_\_\_\_\_\_\_\_\_\_\_). - Does not \_\_\_\_\_\_\_\_\_\_\_\_. - **Weight**: Force due to \_\_\_\_\_\_\_\_\_\_\_\_ (measured in \_\_\_\_\_\_\_\_\_\_\_\_). - Depends on \_\_\_\_\_\_\_\_\_\_\_\_. - Formula: **Weight = \_\_\_\_\_\_\_\_\_\_\_\_ × \_\_\_\_\_\_\_\_\_\_\_\_**. - **Forces and Their Effects** - Factors: - **Magnitude**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Direction**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Point of Application**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Force Diagrams**: Represent forces with \_\_\_\_\_\_\_\_\_\_\_\_. #### **Topic 4 -- Forces, Loads, and Stresses** - **Types of Forces** - **External Forces**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Internal Forces**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Internal Force Types** - **Compression**: \_\_\_\_\_\_\_\_\_\_\_\_. - Failure: \_\_\_\_\_\_\_\_\_\_\_\_. - **Tension**: \_\_\_\_\_\_\_\_\_\_\_\_. - Failure: \_\_\_\_\_\_\_\_\_\_\_\_. - **Shear**: \_\_\_\_\_\_\_\_\_\_\_\_. - Failure: \_\_\_\_\_\_\_\_\_\_\_\_. - **Torsion**: \_\_\_\_\_\_\_\_\_\_\_\_. - Failure: \_\_\_\_\_\_\_\_\_\_\_\_. - **Dead vs. Live Loads** - **Dead Load**: \_\_\_\_\_\_\_\_\_\_\_\_. - **Live Load**: \_\_\_\_\_\_\_\_\_\_\_\_. ### **Additional Practice** - Identify and draw examples of \_\_\_\_\_\_\_\_\_\_\_\_. - Create diagrams showing \_\_\_\_\_\_\_\_\_\_\_\_. - Calculate weight using the \_\_\_\_\_\_\_\_\_\_\_\_.
