Which 3 of the following are more specific types of structures?
Natural Structures
Mass Structures
Manufactured Structures
Frame Structures
Shell Structures
Shell structures are hollow inside.
In a frame structure, the skeleton supports the weight of the other parts of the structure.
Mass structures are made by...
Hammering wood together
However, only it has to be large and heavy
However, but the materials have to be piled up
Planning is extremely important when building a structure. Which of the following things need to be examined in planning?
Safety requirements
Beauty
Funcion
Materials
Colour and Texture
Fasteners or joints
What are some of the things constructors need to think about while choosing a material for the structure?
Cost
How it feels
Enviromental Impact
Appearance
How much energy it uses
Joints can be...
Rigid
Soft
Mobile
Used by anyone
Mass is...
How large an object is
The amount of particles or matter in an object
How heavy an object is
An object covered in cookie dough
According to the lesson notes, FORCE can do all of the following EXCEPT for...
Start an object moving with a push or pull
Slow down an object
Cause a change in direction
Stop an object moving in less than .14 seconds
The Newton (N) unit is used to measure mass.
Which of these is NOT true?
Tension means STRETCHING
Compression means CRUSHING
Torsion means TWISTING
Sheer means TEARING
Bending means ROCKING
An internal force acts on the outside of a structure. An external force acts on the inside of a structure.
Live loads are things/people/weather etc that can act on the structure. Dead loads are the structure itself.
Friction is a force that speeds up motion.
If a structure is STABLE, what does that mean?
It is less likely to tip over
It is not possible for it do get destroyed
It is a place where animals live
What is the "Centre of Gravity"?
Where a body's mass is concentrated
The center of the universe
The middle of the earth
The place in a structure where particles move the most
A gyroscope's axis is stabalized, so it never points in the same direction.
