Science-Technological Systems

Question 1

What is a system?

Answer 1

A group of parts, mechanisms, devices or machines that are made to perform a specific task

Ex: a train: each component has a specific function and can be split into smaller systems

Question 2

What are characteristics of a system?

Answer 2

• Overall function
• Controls
• Inputs
• Processes
• outputs

Question 3

What is an overall function?

Answer 3

Describes what a system needs to do

Question 4

Inputs?

Answer 4

Elements that go into a system to help its functions-
INPUTS:
-People
-Equipment 
-Materials
- Energy
- Information
-Capital(money)
-time

Question 5

Process?

Answer 5

A series of actions that a system has to do to inputs to fulfil its role

Question 6

Controls?

Answer 6

Manage or change wha happens in a system

Controls can be mechanical, electric, or electronic

Question 7

Outputs?

Answer 7

Elements that leave the system once the process is complete
Called:results

SYSTEMS RARELY HAVE 1 OUTOUT

Question 8

What are components of a system?\

Answer 8

• System
• Subsystems
• Parts

Question 9

What are subsystems?

Answer 9

Smaller components of a system separated into parts.

Question 10

What is a subsystem of a car?

Answer 10

Electrical system, breaking system, transition system, exhaust system, steering system, fuel supply system, suspension system, gasoline system, etc

Parts that can be divided into indivisible parts

Question 11

What are subsystems of bikes?

Answer 11

Wheel, breaks, gears etc

Question 12

What is a manufacturing process sheet?

Answer 12

Describes all the steps needed to create every part of a technical object

Question 13

What is mass production

Answer 13

Something in very large quantities

Question 14

What is the header of manufacturing process sheet

Answer 14

Header contains general information about the part being made

Ex: title( Manufacturing process sheet)
part (clock face)
Material (white cardboard with dimensions)

Question 15

What are the 5 techniques required to make a technical object

Answer 15

1. Measuring and marking
2. Machining and forming
3. Finishing
4. Assembling
5. Disassembling

Question 16

Describe 1. Measuring and marking

Answer 16

The materials must be measured carefully and cut lines. Measurements must be PRECISE
Using rulers, metre stick, a compass or protractor

Question 17

Step 2 Machining and forming

Answer 17

Parts need to be cut using tools, and safety equipment or they are folded to give them the needed shape

Go over steps in the slides

Question 18

Step 3. Finishing

Answer 18

You must remeasure the parts sand pieces or file them stain, pain or varnish

Question 19

What is energy?

Answer 19

It is the capacity to produce change, a movement where a change happens

Question 20

4 types of useful energy?

Answer 20

Mechanical
Thermal energy
Luminous energy
Electrical energy

Question 21

What is mechanical energy?

Answer 21

Comes from the motion of an object or its position in space

Question 22

What is thermal energy?

Answer 22

Comes from the Amit ion of particles in matter.

Usually produced from combustion. (A chemical process where a substance reacts with oxygen and gives off heat)

Question 23

What is Luminous energy?

Answer 23

Is carried by light ( aka radiant energy) ex; electrical energy is transformed into luminous energy in lamps.

Question 24

What is electrical energy?

Answer 24

Is energy associated with the movement of electricity ⚡️

Electricity can be carried over long distances

Question 25

What is an energy transformation?

Answer 25

It is the conversion of one form of energy to another.

Question 26

Why is energy transformation useful?

Answer 26

Human cannot always use natural energy in direct form, so it has to be transformed to something more useful.

Ex: winds cants heat our homes but we can covert wind energy into electrical energy, then reconvert it to thermal energy.