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Assignment 3:

[lo 1.10]

Use the sketch in Appendix 1. It is important to give the rocket tail-fins so that it will be able to stand upright for the launch (See Appendix 1). Stick the page onto cardboard. Cut out the fin. Use the template of the fin and trace four fins on thicker, more rigid cardboard. Cut them out carefully. Fold on the dotted line and stick the fins around the bottle at equal distances. (Look at the sketch to see exactly where.)

Assignment 4:

[lo 1.10]

NB:

Do you know how to enlarge this sketch of a fin according to scale/proportional to a fin of ± 20 cm?

  • Draw squares across the sketch: 4 in the breadth and 8 in the length..
  • In this case, each square is 5 mm by 5 mm.
  • Draw squares of 30 mm by 30 mm on an A4 sheet of paper – 4 in the breadth and 8 in the length (8 x 30 mm = 240 mm that will give a fin of ± 20 cm).
  • Now trace the pattern onto the larger squares.
  • Now you have a fin of ± 20 cm

Assignment 5:

Decide which type of body fin will be the most suitable and draw a clear freehand sketch of your choice

[lo 1.8]

Assignment 6:

To make a final drawing (correct size with captions) of the body fin on a sheet of paper. use it as a template to trace onto a thicker sheet of cardboard. (use the method as explained in assignment 4).

[lo 1.14]

Assignment 7:

To build the body of the rocket according to the following instructions

[lo 1.14]

Instructions

Make the body of the rocket by following the instructions below. Cut one 2ℓ bottle right through along the second line just below the sticker (Sketch 1). The part that has the cork in it will be the top section of your rocket. The intact bottle with the opening pointing down forms the lower section of your rocket. You need a weight in the top section of your rocket.

Why?

  • The rocket is not balanced when the engine is in the lower section. That is the heavier section. You have to find a centre of gravity, so that the mass can be spread proportionally on both sides.
  • It is therefore necessary to put something heavy in the upper section of your rocket so that the rocket can be more stable.
  • When the fuel is added, the lower section of the rocket will be even heavier.
  • When a rocket is stable, it continues flying vertically upwards, without overturning and losing direction.
  • So put a few fairly big pebbles in a plastic bank coin pouch and stick it firmly to the bottom on the outside of the intact bottle that is being held upside-down (Sketch 2).
  • Now put the top section of the bottle that has been cut through on top and stick it firmly to the intact bottle with masking tape/strong wide adhesive tape (Sketch 3).

Assignment 8:

In the space below, draw a top view of the position of the fins. use a protractor and pocket calculator for correct spacing

[lo 1.14]

Now affix the fins as planned. Once the rocket has been tentatively completed, it is now necessary to find your rocket’s centre of gravity and its centre of pressure.

Assessment

Learning outcomes(LOs)
LO 1
Technological processes and skillsThe learner will be able to apply technological processes and skills ethically and responsibly using appropriate information and communication technology.
Assessment standards(ASs)
We know this when the learner:
Investigates:1.3 investigates the background context, the nature of the need, the environmental situation, and the people concerned when given a problem, need or opportunity set in a local context;
Designs:1.7 generates at least two alternative solutions and annotates the ideas;
1.8 chooses possible solutions, gives sensible reasons for choice, and develops a chosen idea using graphics or modelling techniques;
Makes:1.10 chooses and uses appropriate tools and materials to make products by measuring, marking, cutting or separating, shaping or forming, joining or combining, and finishing different materials with some accuracy;
1.11 use safe working practices and shows awareness of efficient ways of using materials and tools;
Evaluates:1.12 evaluates the product or system based on criteria linked directly to the design brief and some of the specifications and constraints, and suggests improvements or modifications;
1.13 evaluates the efficiency of the plan of action followed and suggests improving future plans;
Communicates:1.14 presents ideas (in a project portfolio) using two-dimensional or three-dimensional sketches, circuit diagrams or system diagrams.

Questions & Answers

the diagram of the digestive system
Assiatu Reply
allimentary cannel
Ogenrwot
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza Reply
what is cell divisoin?
Aron Reply
Diversity of living thing
ISCONT
what is cell division
Aron Reply
Cell division is the process by which a single cell divides into two or more daughter cells. It is a fundamental process in all living organisms and is essential for growth, development, and reproduction. Cell division can occur through either mitosis or meiosis.
AI-Robot
What is life?
Allison Reply
life is defined as any system capable of performing functions such as eating, metabolizing,excreting,breathing,moving,Growing,reproducing,and responding to external stimuli.
Mohamed
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Source:  OpenStax, Technology grade 7. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11032/1.1
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