Unit D

Question 1

A tent represents which class of structure?

Answer 1

Shell structure

Question 2

What does your skeleton support?

Answer 2

It supports and shapes the body and protects delicate internal organs such as the brain, heart, and lungs.

Question 3

A spider web is an example of what?

Answer 3

Frame structure

Question 4

What does manufacture mean?

Answer 4

To process or make (a product) from a raw material, esp as a large-scale operation using machinery.

Question 5

What is the purpose of an Inukshuk?

Answer 5

Guiding travelers, warning of danger, assisting hunters and marking places of reverence.

Question 6

What is the function of a steep roof on a house in the mountains?

Answer 6

So the snow can slide easily off the roof.

Question 7

What 4 things should engineers consider when choosing materials to build?

Answer 7

— Cost
— Benefits
— Safety
— Impact on the Environment

Question 8

What are the three effects of force on a structure?

Answer 8

— Magnitude, or size, of the force
— The direction of the force
— The location where the force is applied

Question 9

What is the unit of measure we use to measure force?

Answer 9

Newton

One newton is the amount of force needed to hold up a mass of 100g.

Question 10

True or false? Does a low center of gravity and a wide base have the greatest stability?

Answer 10

True

Question 11

Define dynamic load?

Answer 11

Moving or changing force acting on an object.

Question 12

Define static load?

Answer 12

Weight of a structure, and the non-moving load it supports.

Question 13

What part of the structure of the bridge experiences the strongest gravitational force?

Answer 13

the meddel

Question 14

What is symmetry?

Answer 14

Balanced arrangement of mass on opposite sides of a line or plane, or around a center of axis.

Question 15

Which type of bridge would engineers suggest to withstand very heavy loads?

Answer 15

A Truss bridge

Question 16

Define complementary force?

Answer 16

Different kinds of forces act on a structure at the same time.

Question 17

Define tensile strength?

Answer 17

Measures the stress required to pull something such as a rope, wire, or a structural beam to the point where it breaks.

Question 18

Define composite material?

Answer 18

A composite material is a combination of two materials with different physical and chemical properties.

Question 19

Define ductility/plasticity?

Answer 19

Ductility: Ability to be made into a wire.
Plasticity: Ability to be shaped.

Question 20

Define deformation?

Answer 20

A change of shape in any structural component, or in the structure itself.

Question 21

Define cartilage?

Answer 21

Found on ends of bones.

Question 22

What is a girder beam and what shape does it look like?

Answer 22

A Girder is a beam used for horizontal support in a structure. It can have different shapes (I, H, Z or box) and be made of steel, reinforced concrete, wood, etc.

Question 23

Define structural failure?

Answer 23

The capacity of a structure to support both the load of its own material plus any additional load applied to it.

Question 24

Define frictional force?

Answer 24

The force that results when the surface of one object moves against the surface of another object.

Question 25

Define compression?

Answer 25

A Force that acts to squeeze an object or push parts within an object together.

Question 26

Define shear?

Answer 26

Force that acts to push parts that are in contact with each other in opposite directions.

Question 27

What is the function of each tree ring parts?

Answer 27

Bark: protects inner layers

Woody Layer: contains phloem (transports sugars within tree)

Vascular Cambium: contains dividing cells

Sapwood: conducts water and
minerals within the tree

Heartwood: provides main support

Question 28

Define fixed joints?

Answer 28

Fixed joints are joints that are joined together.
— Example, skull

Question 29

What are the different parts of the human body?

Answer 29

Ligament,
Joints,
Tendons,
Skull,
Bones,
Muscles.

Question 30

Define lamination?

Answer 30

Process of gluing layers of material together to create a strong bond.

Question 31

Define corrugation?

Answer 31

Forming a material into wave-like ridges or folds.