Structures Flashcards
(19 cards)
What is a structure?
A structure is something that has been constructed or built.
What are the three main functions of structures?
- Supporting a load
- To contain and protect things
- Spanning a gap between two places
Give an example of a structure that supports a load.
A bridge to support cars and trucks
What is a shell structure?
A shell structure is hollow with a strong outer layer that protects or contains what is inside.
List three examples of shell structures.
- Mug
- Cardboard box
- Egg nest
What defines a frame structure?
A frame structure can support a weight or a load and is made of different parts joined together.
What are the properties of frame structures?
- Strength
- Stability
- Stiff/rigid
What is a solid structure?
A solid structure is not hollow, has no gaps, and usually made of one material.
List two examples of solid structures.
- Stone wall
- Bricks
What are natural structures?
Natural structures are built by animals, birds, and insects using materials from the environment.
Give examples of natural animal shelters.
- Burrows
- Hollow logs
- Nests
What are man-made structures?
Structures built by people using natural or manufactured materials.
Fill in the blank: Chickens live in a _______.
[chicken coop]
True or False: All structures are natural.
False
What materials are used to build man-made structures?
- Natural materials (wood, clay)
- Man-made materials (metal, glass, plastic)
What is an example of a man-made animal shelter?
A wooden and metal chicken coop
What is the purpose of animal shelters?
To protect animals from danger and bad weather.
What is triangulation in frame structures?
The use of triangles to make a structure more rigid.
List two examples of solid structures.
- Mountains
- Concrete paving
