Definitions
What is a truss?
a framework that supports something, like a roof or a bridge
Which of the following is not a structure?
a) CN Tower
b) TV
c) Heat
d) Stairs
c) Heat
What is Centre of Gravity
the average location of the weight of an object
Which is Human Made?
a) Bee-hive
b) Birds' nest
c) School
d) Cave
c) School
What is a structure?
A group of elements joined together to support a load.
Which of the following is a natural structure?
a) Bridge
b) Iceberg
c) Car
d) CN Tower
d) Iceberg
What is the difference between compression and tension forces?
Compression pushes, tension pulls and twists.
Which of the following is an unstable structure?
a) Hammock
b) Car
c) Skyscraper
d) House
a) Hammock
How can engineers make stronger and more stable structures?
Think shape, building, materials, design.
Which building material is flexible, weak and not durable?
a) Rubber band
b) Steel
c) Concrete
d) Brick
a) Rubber band