Engineering, Science, & Society
True or False: society influences technology
True
What is put in, taken in, or operated on by any system are the ____________________
Input (s)
What is a constraint?
What is the FIRST step in the design process?
ASK a question
Name one engineered system and name one natural system.
Engineered: phone, bike, rocket. etc
Natural: body system, ecosystems, water cycle
True or false: both a paperclip and a phone are considered technology.
True!
Technology is anything designed to help with a task
What is produced by a system is the __________
output (s)
What is meant by criteria?
A goal/standard
What 2 things need to be identified BEFORE you begin designing a solution?
The criteria and constraints
What was the main criteria for building a rollercoaster?
Fun but safe
Of the questions on forest fires, write S for scientist or E for engineer:
1. What materials put out fires the best?
2. What percent of fires are caused naturally?
3. How would wind from a helicopter affect the fire below?
1. E
2. S
3. E
Another name for all the parts of a system that work together.
Components
What does it mean to be precise?
To be exact, clear, specific
What step comes next after you have built a model/prototype?
TEST it!
What vocab word is being defined:
"giving up one advantage to keep another"
Tradeoff
What is it called when we copy nature in the engineering process?
Biomimicry !
List 2 inputs and 2 outputs of a computer system.
Input: mouse, keyboard, electricity
Output: essay, email, the screen, heat
Write an example of a precise constraint of our soap box car design.
Weight cannot exceed 120 g
Length cannot exceed 15 cm
Width cant go past 7 cm
What do we call a beginning model of a design?
prototype
What does an average egg weigh in grams?
55 grams
List 3 key factors that influence technology.
(We talked about 5 in class)
Society (peoples needs/wants)
Environment
Resources (amount available)
Scientific Understanding/Findings
Cost
In the natural system of photosynthesis, the components are oxygen, CO2, and sunlight.
State the inputs and outputs
Input: sunlight and CO2
Output: oxygen
What is one important step in the process that comes AFTER the need/problem has been identified, but BEFORE the planning and designing starts?
Research!!
There several main constraints engineers face. Name 3 of them.
Cost
Materials/resources
Laws/Safety
Environment/space
Time
What does a "tensile test" test?
Strength of materials (what force it can withstand before breaking)