Multiple Choice
A measure of the intensity of a force is known as _______________.
a) Magnitude
b) Weight
c) Speed
d) Direction
a) Magnitude
What is a structure?
A structure is something that will support an object or weight
List two shell structures:
Egg, Metal Can
List two solid structures:
Statue, Pillar, etc
List three properties of air.
-Air has mass
-takes up space
-exerts pressure
-Exerts temperature
it can be compressed and it’s affected by altitude.
A force that pushes in the opposite direction is known as:
a) Shear
b) Tension
c) Torsion
d) Compression
a) Shear
What is an arch bridge?
bridges that have a semicircular shape to provide support.
List two frame structures:
House
Crane
What is the function of symmetry in structures?
The function of symmetry in structures is for esthetics (looks), better centre of gravity, and more stability.
What is Bernoulli’s Principle?
Bernoulli’s principle states the faster air flows, the less pressure it has.
All buildings in Ontario must be designed in accordance with the...
a) Canadian Building Code
b) Ontario Construction Act
c) Ontario Area Code
d) Ontario Building Code
d) Ontario Building Code
What is flight?
Flight is the action or process of flying through the air.
List two animals that can fly and two that cannot
*
What strategies are used by engineers to ensure that their structures are safe?
Engineers use sensors to track the condition or status of a structure. They also design the structure in a strategic way to prevent structural failure.
What is Aerodynamics?
the study of how air moves around things.
Which of the following is an example of an internal force on a bridge?
a) Pedestrians walking on the bridge
b) The weight of the bridge’s deck
c) Vehicles on the bridge
d) Snow on a bridge
b) The weight of the bridge’s deck
What is Lift?
a force that acts against weight caused by air moving over and under the wings.
Explain air
Air is the invisible gas surrounding the earth, made primarily from oxygen and nitrogen
What is the difference between a static and dynamic load?
A static load is a load that does not change. A dynamic load is a force that can change when acting on a structure
What type of force does the airplane engine generate? a) Lift
b) Drag
c) Thrust
d) Gravity
c) Thrust
Which of the following is not one of Newton’s principles.
a) A body continues to be at rest or in motion unless an external force is applied to it.
b) The greater the mass (weight) of a body, the greater the force needed to accelerate it.
c) For every action, there is an equal and opposite reaction.
d) The greater the drag, the less force is required.
d) The greater the drag, the less force is required.
What is a Truss bridge?
bridges that have an assembly of triangles for extra support.
Why do engineers use risk management techniques?
Engineers use risk management techniques because if they did not, the damages to structures could be fatal or costly.
What is the difference between internal and external force?
An internal force is caused when one part of the structure is creating force on a different part of the structure. An external force acts on an object or structure from outside of the structure.
Who discovered and identified the four principles of flight?
a) Wright Brothers
b) Sir George Cayley
c) The Red Baron
d) Buzz Aldrin
b) Sir George Cayley