30 terms

Science 7 - Structures and Forces

The vocabulary terms from Science 7, Structures and Forces.
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Function
its main purpose of a structure or an object.
force
a push or pull, or anything that causes a change in the motion of an object
the weight of the structure itself
natural structures
an object or structure not made by people
manufactured structures
an object or a structure that is made by humans
design
the shape and size of a structure and the materials of which is it composed. How a structure looks.
mass structures
a structure, natural or manufactured, that is made by the piling up of material of the same kind; examples include a pyramid and a snow fort
frame structures
a type of structure in which a skeleton of materials that has empty space & supports the weight of the other parts
shell structures
a type of structure that is shaped with a curved outer layer of material and that requires no internal frame
aesthetics
The properties of an object that make it pleasing to the senses
margin of safety
the need for something to perform as expected for a long time, so that people's safety and health are not at risk.
properties
the characteristics of materials; every material has its own unique set of these; examples include colour, odour, and density
kilogram
the primary measurement of mass
balance
a device to measure mass
Newton
the standard unit of force
internal forces
a force that acts on an object from the inside
the load that is the weight of a structure itself
the force or forces that act in or on a structure but are not part of the structure; examples include the wind, and the weight of people
compression
a force of pushing materials together
tension
a force of pulling materials apart
shear
a section of compressed material that breaks apart
bend/buckle
to fold or break under a compressive force and tension force
torsion
a force that acts on a material by twisting its ends in opposite directions
center of gravity
the point at which all of the gravitational force of an object may be considered to act
external force
a force that act on a structure from the outside
Weight
the force of gravity acting on the mass of an object
Mass
the total amount of matter in an object