Definitions
What is a structure?
A structure is something with a definite size, shape, purpose, and can hold a load.
A shopping mall is an example of a _____________ structure.
Built
A structure must be built to hold a _____________.
List 2 examples of structures in our community.
Examples: house, school, stores
Name 2 materials you could use to build a small bridge across a river.
Examples: wood, steel, concrete, stone
What is tension?
Tension is a force where something is pulled apart or stretched.
A tree is an example of a ___________ structure.
Natural
Structures must be very ____________.
strong
List one famous structure that we learned about.
Name 3 objects made out of wood.
Examples: cabin, bridge, pencil, dock
What is compression?
Compression is a force where something is squished down or pushed together.
What are 2 examples of built structures?
Under the roof of a house there are __________ and ________.
struts and ties
What is an example of a tie?
Examples: A tent cord
Name 3 different materials used to build a house.
Examples: wood, glass, bricks, steel, cement
What is a strut?
A rod or bar that helps a structure resist pressure.
What are 2 examples of a natural structure?
Examples: beaver dam, beehive, nest
Sometimes ___________ cause structures to change.
forces
What is an example of a strut?
A tent pole
What is a material?
A material is something that is used to make an object or structure.
What word describes the ability to balance and stay fixed in one spot?
Stability
What natural structure belongs to a snail?
A snail shell
A ______ is a beam or wire that supports a structure with tension.
tie
Give an example of a person who works with structures.
Examples: architect, construction worker
What is the toughest material on Earth?
Diamonds