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Gr.7 Form&Function
| Question | Answer |
|---|---|
| What is a structure? | Anything made of parts put together for a particular purpose. |
| What are the 2 types of structures? | Human-made and found in nature |
| What is form? | The shape and physical appearance of a structure. |
| What is function? | The task or purpose of a structure. |
| What is a force? | A push or a pull. |
| What is gravity? | The force of attraction between all objects. |
| What is a applied force? | Forces that push or pull objects when objects come in contact with one another. |
| What is a non-contact force? | Forces that push or pull things without contact. |
| What is mass? | The quantity of matter in an object. |
| What do we use to measure mass and weight? | A balance and a newton spring scale. |
| What is weight? | The force of gravity acting downward on an object. |
| What units are used to measure mass? | Grams and kilograms. |
| What units are used to measure weight? | Newtons. |
| What are the 5 direction of forces? | up, down, left, right and sideways |
| What does magnitude describe? | The strength of the force. |
| What is a dead load? | The weight of the structure itself. |
| What is a live load? | The weight of the objects that a structure supports. |
| What is a dynamic load? | Loads on a structure that are caused by forces other the force of gravity. |
| What is a solid structure? | An object that uses solid construction to support loads. |
| What are 3 examples of a solid structure? | A concrete dam, wooden telephone pole and a marble statue. |
| What is a frame structure? | A network of parts that support loads. |
| What are 3 examples of a frame structure? | A goalies net, a spider web network of steal or wooden beams. |
| What is a shell structure? | A hollow structure with a curved shape providing high strength and rigidity. |
| What are 3 examples of a shell structure? | A birds beak, a pop can and a bike helmet. |
| What is a combination structure? Give an example of one. | A mix of solid, frame and/or shell components. This is why the human body is considered a combination structure. |
| What is an internal force? | A force acting between two parts of a body. |
| What is an external force? | A force acting on an object or structure from the outside. |
| What is the point of application? | The location on an object where the force is applied. |
| What is the plane of application? | An imaginary flat surface through which the applied force passes. |
| What is tension? | An internal force pulling the particles of an object apart. |
| What is compression? | An internal force that presses or squeezes the particles of an object together. |
| What is torsion? | Internal twisting forces created in an object as a result of a twisting motion being applied to the object. |
| What is shear? | Forces acting in an object as a result of pushes and/or pulls in opposite directions; usually results in rips or tears in a object. |
| What are 2 examples of tension? | a stretched skipping rope, a trampoline |
| What are 2 examples of compression? | when you kick a soccer ball, stepping on the sole of your shoe |
| What are 2 examples of torsion? | a wash cloth being wrung out, a doorknob being twisted |
| What are 2 examples of shear? | scissors, a strong wind blowing over a tree |
Created by:
spassfie9407
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