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