STEM Core 1 Mid-term Review
Describe the parts of the design process
1. define problem and goal 2. research- gather information + investigate 3. imagine possible solutions- brainstorm 4. choose a solution- tools, time, cost 5. create and test a prototype 6. improve- solution + results
How many different ways can you measure an object with a dial caliper?
4 (outside diameter, inside diameter, depth, height)
Compression-
A force that squeezes
What are scale factors?
A number that is multiplied by the scale of an object that looks but is a different size or a ratio of change from a drawing to real life
Vector
A quantity that has magnitude and direction
What does CAD stand for in AutoCAD?
Computer Aided Design
How are different materials chosen for various design applications?
Different materials are chosen to reinforce or make another material stronger
Why is steel used to reinforce concrete?
It enhances the strength
SOHCAHTOA
SIN (Opposite/Hypotenuse) COS (Adjacent/Hypotenuse) TAN (Opposite/Adjacent)
Define STEM-
Science, Technology, Engineering, Math
How do you effectively sketch an object?
Straight lines, steady lines, no fuzzy lines, detail, light lines
Why are architectural scales used?
To determine the actual dimensions of a distance on a scaled drawing
Scalar-
a physical quantity that has magnitude only.
What are the parts of a lab report?
cover, abstract, introduction, objective, materials, procedure, results, conclusion, safety
What does the rear plunger measure?
depth thickness
Velocity=
displacement/time
Speed=
distance/time
How do you choose an optimal scale?
divide the largest number by the scale factor and see if that will fit on the paper
Name STEM professions
engineering, marine biologist, mathematician, forensic science
Tension-
force that stretches
What do small jaws measure?
inside diameter
What is speed and velocity measured in
meter per second
What do large jaws measure?
outside diameter
Mean-
the arithmetic average of all the numbers
Median-
the middle value in a sequence when listed least to greatest