SCIE 4001
Section A - Multiple Choice
Section A - Multiple Choice Answers
Multiple Choice on Section B Matter and Materials
Multiple Choice on Section B Matter and Materials Answers
Section B - Matter and Materials
Section C - Energy
Section D - Structures and Mechanisms
 

Unit 3 Structures and Mechanisms

answers

 

answers (a) Answer points–
I - Identify the problem
What is the problem that you are trying to solve?
D - Define the goal
What do you want to end up with? Are there limitations on what you can do or how you can do it?
E - Explore possible solutions
Brainstorm ways you can solve this problem.
A - Assess the alternatives
What are the pros and cons about each possible solution? What will work? What won't work? Do you have everything that you need? Does the possible solution fit the parameters that are given?
T - Take action
Put your best possible solution to work to solve the problem and reach your goal.
E - Evaluate the outcome
Was the problem solved? Did you reach the goal? What worked? What didn't work?
answers

(c) Answer points–.
(i) Associated with modernist architecture and industrial design in the 20th century is a principle that form follows function.
(ii) The principle is that the shape of a building or object should be primarily based upon its intended function or purpose.
(iii) The floors and walls of a bathroom should be made of waterproof materials and designed so that waste water runs out easily as its function is for bathing. A dining table should have a flat top and sturdy legs so that eating utensils will not slide off easily and there will be no wobble or shake to create spills from food and drink.

   
answer

Answer points
(a) Technology is a unique human activity which tries to make artifacts to solve human problems. Technology may or may not be driven by science. It is only since the renaissance that science has started playing a bigger role in technology, however craft still influences technology.

answer

(b) I - Identify the problem
What is the problem that you are trying to solve?
D - Define the goal
What do you want to end up with? Are there limitations on what you can do or how you can do it?
E - Explore possible solutions
Brainstorm ways you can solve this problem.
A - Assess the alternatives
What are the pros and cons about each possible solution? What will work? What won't work? Do you have everything that you need? Does the possible solution fit the parameters that are given?
T - Take action
Put your best possible solution to work to solve the problem and reach your goal.
E - Evaluate the outcome
Was the problem solved? Did you reach the goal? What worked? What didn't work?

answers

(c) Science is observing the natural world to gather data that is observable, repeatable and reliable.
Science tries to explain these observations.
Scientific information is changed through a process call a scientific method.
Technology is a unique human activity which tries to make artifacts to solve human problems.
Technology may or may not be driven by science.
It is only since the renaissance that science has started playing a bigger role in technology, however craft still influences technology.

Differences

Science

Technology

Nature Science is knowing Technology is doing
Goals The search for and theorizing about cause. The search for and theorizing about new processes.
Value Making virtually value-free statements Activities always value-laden
Evaluation Methods Observation, hypothesis, testing hypothesis and creation of theories Analysis and synthesis of design
Goals achieved through Corresponding Scientific Processes Key Technological Processes
Focus Focuses on understanding natural phenomena focuses on understanding and improving the man-made environment
Development Methods Discovery (controlled by experimentation) Design, invention, production
Most observed quality Drawing correct conclusions based on good theories and accurate data Taking good decisions based on incomplete data and approximate models
Skills needed to excel Experimental and logical skills needed Design, construction, testing, planning, quality assurance, problem solving, decision making, interpersonal and communication skills
 
answers

(d) Bottle opener – this bartenders’ opener can be a 2nd class if used traditionally but a 1st class if used by pressing down (like bartenders do).

ans

answers

Pliers – 1st class

   

 

QUESTION 6
Levers help to make work easier.
(a)Choose two types of levers and illustrate with the aid of a diagram how they can make work easier. (5marks)                                                                            
(b)Define any terms used. (3marks)
(c) The form or structure of objects enables them to perform essential functions. Explain this statement using two appropriate examples. (4marks)
(d)Write down two (2) characteristics of Technology. (3marks)

Answer points–.

ans

Work can be made easier by developing (i) force multiplier (ii) distance multiplier.

(a) A first class lever can be a force multiplier like a crowbar use to move a heavy stone – a small force through a longer distance is use to develop a large force moving through a shorter distance (diagram above). The first class lever to the right is a distance multiplier and can make work easier by lifting a light load through a large distance when the effort moves through a smaller distance.

 

ans
A third class lever is always a distance multiplier, as for example, using a tweezers to hold a small object.
Effort is the force applied; Load is the force that is required to do the job and the fulcrum is the part of the lever which does not move.
ans
A second class lever is always a force multiplier, as for example, generating a large force to remove a nail with a claw hammer.

(b) (i) Associated with modernist architecture and industrial design in the 20th century is a principle that form follows function.
(ii) The principle is that the shape of a building or object should be primarily based upon its intended function or purpose.
(iii) The floors and walls of a bathroom should be made of waterproof materials and designed so that waste water runs out easily as its function is for bathing. A dining table should have a flat top and sturdy legs so that eating utensils will not slide off easily and there will be no wobble or shake to create spills from food and drink.

(c) Characteristic

Technology

Nature Technology is doing
Goals The search for and theorizing about new processes.
Value Activities always value-laden
Evaluation Methods Analysis and synthesis of design
Goals achieved through Key Technological Processes
Focus focuses on understanding and improving the man-made environment
Development Methods Design, invention, production
Most observed quality Taking good decisions based on incomplete data and approximate models
Skills needed to excel Design, construction, testing, planning, quality assurance, problem solving, decision making, interpersonal and communication skills
     
Concept by Kishore Lal. Programmed by Kishore Lal... Copyright © 2015 Kishore Lal. All rights reserved.