Sketching Basics
This is a loose visual representation used to quickly capture or communicate an idea.
What is a sketch?
A cardboard bridge is an example of this type of engineering model.
What is a physical model?
Looking straight down at an object produces this view.
What is the top view?
The primary purpose of this type of drawing is to accurately communicate how an object works or is constructed.
What is a technical drawing?
This drawing method represents a 3-D object using multiple 2-D views.
What is orthographic projection?
This type of sketch includes notes, labels, dimensions, and/or symbols to provide additional information.
What is an annotated sketch?
A rough labeled drawing showing how a new product might work is this type of model.
What is a conceptual model?
Looking directly at an object straight on produces this view.
What is the front view?
Technical drawings commonly use these so engineers, designers, and manufacturers interpret information consistently.
What are standard symbols?
This drawing method displays width, depth, and height together and gives an object a 3-D appearance.
What is isometric projection?
True or False: A sketch must always be perfectly accurate and drawn to scale.
What is False?
Equations, calculations, measurements, and spreadsheets are commonly associated with this type of model.
What is a mathematical model?
Looking at an object from its left or right produces this view.
What is the side view?
Millimeters, centimeters, meters, and inches are examples of information that should accompany numerical dimensions.
What are units of measurement?
Front, top, and right-side views are commonly included in this type of drawing.
What is an orthographic drawing?
These four letters describe technology commonly used by engineers and designers to create drawings and models on a computer.
What is CAD?
A designer creates a 3-D printed version of a product so it can be handled and tested. Identify the type of model.
What is a physical model?
A rectangular box measures:
Width = 10 cm
Depth = 6 cm
Height = 4 cm
When looking at the box from the front, these two dimensions are primarily visible.
What are width and height?
Name three features commonly found on a technical drawing.
Any three of the following:
Dimensions
Units of measurement
Standard symbols
Multiple views
Labels
Notes
Technical lines/conventions
You want someone to quickly visualize how an object looks in three dimensions using one drawing. This type of drawing would be especially useful.
What is an isometric drawing?
Explain one reason an engineer might create a loose sketch before producing a detailed technical drawing.
What is to quickly capture, explore, communicate, or modify an idea?
A team designing a desk lamp does the following:
Creates a rough labeled drawing.
Calculates dimensions and electrical requirements.
Builds a working prototype.
Identify the three model types in order.
What are conceptual, mathematical, and physical models?
Engineers use front, top, and side views because different views reveal different information about this characteristic of an object.
What is its shape, size, or geometry?
Explain why writing simply 25 on a technical drawing could create a serious problem for a manufacturer.
What is because the unit of measurement is missing?
Explain one major difference between an orthographic drawing and an isometric drawing.
What is: an orthographic drawing uses multiple 2-D views, while an isometric drawing shows a 3-D appearance in one view?