Types of Structures
a) shell structures
b) mass structures
c) frame structures
b) mass structures
A force that acts OUTSIDE of the structure
External Force
Pushing on an object, squishing it, causing it to buckle or crumple is called:
a) tension
b) torsion
c) compression
d) shear
c) compression
Mass is measured in this unit:
a) Newton's
b) pounds
c) grams
c) grams
What are the two types of joints that hold materials together?
a) rigid and dynamic
b) solid and mobile
c) rigid and mobile
c) rigid and mobile
Skeletons and frames of houses are called:
a) frame structures
b) mass structures
c) shall structures
a) frame structures
A force that acts INSIDE the structure
Internal Force
Pulling on an object like a tug of war rope, is called:
a) tension
b) torsion
c) compression
d) shear
a) tension (THINK, pulling on a rope makes it very TENSE)
Weight is measured in this unit:
a) Newton's
b) grams
c) pounds
a) Newton's
What are the two types of loads?
a) static and force
b) weight and mass
c) static and dynamic
c) static (doesn't move) and dynamic (moves)
The outer think layer of a structure, like drywall or a roof, is called:
a) mass structure
b) shell structure
c) frame structure
b) shell structure
A force is best described as...
a) a push or a pull
b) Mass and weight
c) internal
a) a push or a pull
Twisting an object, like wringing out a wet towel to dry it, is called:
a) torsion
b) tension
c) compression
a) torsion (THINK that the second letter in this word is O which is closer to W for TWIST)
A triple beam balance measures:
a) weight in grams
b) ounces in grams
c) mass in grams
c) mass in grams
Making sure a structure is much stronger than it needs to be is called:
a) keeping it strong
b) margin of safety
c) margin or error
b) margin of safety
Structures originate from two sources:
a) humans and nature
b) factories and animals
c) builders and creators
a) humans and nature
How a force impacts a structure depends on the:
a) direction of the force
b) magnitude (strength) of the force
c) location of the force on an object
d) all of the above
d) all of the above
Ripping a piece of paper, tearing it, is called:
a) tension
b) shear
c) compression
b) shear (THINK shearing a sheep means shaving/cutting its wool off)
A spring scale measures:
a) mass in weight
b) weight in grams
c) weight in Newton's
c) weight in Newton's
A cylinder is the strongest shape because:
a) it cannot distributes forces evenly
b) it can distribute forces evenly
c) A cylinder is always made with very strong materials
b) it CAN distribute forces evenly
The tallest structure in the world is the:
a) Eiffel Tower
b) Burj Khalifa
c) Taj Mahal
b) Burj Khalifa
An external force acts on the _____ of a structure, and an internal force acts on the ______ of a structure.
a) inside, inside
b) outside, outside,
c) outside, inside
d) inside, outside
c) outside, inside
When you are rock climbing and need to pull yourself up the mountain, what force are you putting on the rope?
a) tension
b) torsion
c) shear
d) compression
a) tension (you are pulling on the rope to go up)
100 grams is equal to ______ and 1000 grams is equal to _______
a) one kilogram, one gram
b) one Newton, one kilogram
c) one gram, one Newton
b) one Newton, one kilogram
What are some reasons structures fail?
a) The builder and the designer never talk or meet
b) The design is poor
c) the foundation is weak
d) all of the above
d) all of the above