WorksheetsGrade 7 Science: Structures: Form and Function
Total questions: 70
Worksheet time: 1hrs 8mins
When Jeremy Hansen travels from Earth to the Moon, which of the following changes due to the difference in gravity pull?
Mass
Weight
Pounds
Balance
Beams are improved by:
Making an I or L shape inside
Having less of them when possible
Putting them only outside the building
Beams cannot be improved
A structure that resists falling over is said to be ________________.
Aesthetic
Cost efficient
Stable
Design flawed
If you are making a bicycle, the main structure you would need is a___________.
A bird sitting on a wire is a _______ load.
static
dynamic
live
dead
In a building, the walls of the building is a _________ load
dynamic
dead
live
all of the above
The primary stress that a pair of scissors have to withstand is
compression
tension
shear
torsion
Bending is a combination of which two stresses?
torsion and shear
tension and compression
tension and torsion
compression and shear
The caps of most mushrooms are hollow. What kind of structure would they be classified as?
Shell structure
Solid structure
Frame structure
Whole structure
In a structure, the function of a beam is to ____________.
provide strength and distribute the force of the load
provide an interesting look or texture
distribute force from the load to the ground
join two materials together without the use of glue
What makes igloos strong?
They are natural structures.
The igloo is a mass structure.
The coldness makes everything stay in a solid state.
The forces acting on the igloo are distributed equally in all directions.
The weight of the equipment of a bus ( including all the parts) is called the _____________.
human factor
riding mass
dead load
live load
You see a crane carrying a load of supplies at a construction site. The rope holding the supplies to the crane is experiencing _____________.
shear
tension
buckle
torsion
Weebles wobble but they don't fall down because they have _____________.
a. a high center of gravity
b. a low center of gravity
c. no center of gravity
d. no gravitational pull
When mass increases then gravity __________________.
decreases
increases
stays the same
is not affected
What force holds the planets in motion around the sun?
Magnetic
Electrical
Gravitational
Air Resistance
Jupiter has about 317 times more mass than Earth. What can you infer from this fact?
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
That Jupiter’s and Earth’s gravitational forces are equal.
Mass has no effect on the gravitational force between two objects
What is defined as a push or pull?
force
motion
vector
speed
This type of force is an attraction between two objects
contact
gravity
friction
love
The unit of force is a ________.
magnitude
Newton
The shape and physical appearance of a structure is ________.
form
function
stability
force
______________ is the task or purpose of a structure.
shape
form
function
magnitude
A structure is anything made of __________ and put together for a particular ___________.
cardboard and shape
stuff and thing
parts and purpose
concrete and style
Ergonomically, what is wrong with this gentleman's posture?
The man's desk is too small.
The man is sitting with his back not straight.
The telephone is too far out of reach.
His shirt is not clean.
These cause damage, usually to the small muscles of the wrists or hands, from repeated activities over a long period of time.
relative strength Indexes
repetitive straight instances
repetitive strain injuries
recent stress injuries
There are two types of forces that designers of structures have to consider, ______________and ___________.
external forces and internal forces.
colour and shape.
gravity and magnitude.
stability and design.
The strength of a force is also know as the _________________.
direction of the force
applied force
magnitude
dead load
When Buzz Aldrin walked on the moon, his ___________ changed, although his ____________ stayed the same.
mass & weight
mass & gravity
gravity & weight
weight & mass
Dynamic load refers to _______________________________.
a type of static load caused by the weight of the structure.
any load on a structure that is not caused by gravity.
a type of static load caused by the weight of the objects it supports.
any load on a structure, including gravity.
When a beam is supported at only one end, we call this beam a(n) _____________________.
unstable structure.
cantilever.
fully supported beam.
corrugation.
A dome is __________________________________________.
a structure that is supported at only one end.
a network of beams arranged in triangles.
a curved structure used to span a space while supporting a load.
a shell structure that looks like the top half of a sphere.
These are made from a single layer of carbon atoms, arranged in a hexagonal shape.
carbon dioxide.
carbon monoxide.
snowflakes.
carbon nanotubes.
Structural failure is a result of _____________________________.
the structure or part of the structure losing the ability to support the load.
the builder creating a structure that is not aesthetically pleasing.
the cost of building the structure are too high to build it.
building a structure that is not the tallest in the world.
Four causes of structural failure are ________________________.
foundation failure, extraordinary loads, faulty construction and bad design.
too costly to build, faulty construction, not aesthetically pleasing, extraordinary loads.
bad design, excessive height, faulty construction, and too costly to build
faulty construction, missing stairs, no windows and poor paint quality.
Companies consider three important sets of factors before they build a new product or redesign and existing product. These factors are a part of the product development process.
design factors, manufacturing factors, and sales factors
weight factors, mass factors, and gravitational factors
height factors, width factors, and length factors
internal factors, external factors, and in between factors
Compression, tension, torsion and shear are examples of ______________ forces.
external
internal
magnitude
downward
Wind and snow are examples of _______________ loads.
static
dynamic
dead
over
Symmetry is when the object is different on both sides.
True
False
Sometimes
Always
3 functions of symmetry in structures are:
centre of gravity, stability and support
aesthetics, centre of gravity and stability
support, stability and aesthetics
height, weight, and curvatures
What is the simplest type of bridge?
Truss
Beam
Arch
Suspension
A force that pushes in opposite direction is known as...
Shear
Dynamic
Torsion
Compression
What is one way you might increase the stability of an object?
Lower the center of gravity
Raise the center of gravity
Increase the height of the object
Shorten the base of the object
This force often occurs when when a material is supporting a weight from above.
Compression
Tension
Torsion
Shear
This is an example of what type of force?
Shear
Torsion
Compression
Tension
Bending
Bridge B collapsed under its own weight. What cause the collapse?
the live load
the environmental load
too much traffic on the bridge
the dead load
Bridge A collapsed because there was too much traffic on the bridge. The bridge collapsed due because
it could not support its dead load
it could not support its live & dead loads
it could not support its live load
the bridge was hit by wind
Unstable
33.3 pounds
What do we call the location on an object where an external force is applied or concentrated?
point of touch
plane of application
point of application
Plane of touch
What is the plane of application?
The forces of a plane experiences when flying
The function of a plane
How the plane is used
an imaginary flat surface through which an applied force passes
#1 Equitable Use
#2 Flexibility in Use
# 6 Low Physical Effort
#4 Perceptible Information
#1 Equitable Use
#2 Flexibility in Use
#4 Perceptible Info
#5 Simple & Intuitive
This image BEST represents which principle?
#2 Flexibility in Use
#5 Tolerance for Error
#6 Low Physical Effort
#1 Equitable Use
The bent handle of this ergonomic snow shovel means _______________________.
less stress on
the spine and reduced risk of back injuries.
it is harder to lift the heavy snow.
it makes lifting the heavy snow easier by reducing the amount of gravitational pull on the load.
a lot more work for the shoveler due to the increased amount of snow lifted.
