Group A – 12 minutes | List of items | Group D – 9 minutes |
Ms Obiri’s diamond | The hardest of substances | A steel screw |
Milk | From a cow | A shoe and a leather belt |
Goat droppings from the road | Something eaten | A leaf eaten by an insect |
Ohene cries and laughs | Something changed | A burnt match |
Our group – four boys and three girls | A mixture | Air in an empty glass |
Salt | Something pure | Sugar |
Candle | Something that disappears | Water (evaporates) |
Pencil | From a tree | Paper |
Glass from sand | Something from something | Same paper |
Sand again | From the mountains | The wind and the tap water |
Object | Label |
Piece of copper wire | Pick up the wire. Can you bend it? Where have you seen it being used? What is able to pass through it? |
Woven basket | How does the basket feel? Can you easily pull it apart? |
Metal spoon | Pick up the spoon and think of three words to describe how it feels. What happens to the spoon if you put one end in a cup of very hot water? |
Pottery cup | Can you change the shape of the pottery? Would it break if you dropped it? (DO NOT TRY THIS.) |
Piece of glass | Can you see through the glass? What would happen if you dropped it? (DO NOT TRY THIS.) |
Plastic bag | What happens if you drop water onto the plastic bag? Does it go through into the bag? Can you easily fold up the bag? |
Wooden spoon | Can you bend the spoon? What happens to the spoon if you put one end in a cup of very hot water? |
Piece of cotton fabric | Hold the material up to your face. Can you see through it? What does it feel like? |
Small magnet and pins | Move the magnet over the pins. What happens? Where have you seen a magnet being used? |
Property | What it means | Example |
Insulator | Does not let heat go through it | Wood |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Actions Taken | |
A | |||||||||||
B | |||||||||||
C | |||||||||||
D | |||||||||||
E | |||||||||||
F |
Everyone participated actively. Everyone paid attention, made suggestions and helped practically. Everyone co-operated well. | |
Most people participated and had a chance to do something to help. Everyone stayed interested. No one felt left out. | |
The group stayed together and got the work done. But some were a little quiet or didn’t get given a chance to help. | |
The group was disorganised. One person took over. There was hardly any sharing of ideas and talk about what was happening. |
Renewable resources | Non-renewable resources |
Wood from planted trees – gum and pine | Wood from wild forest trees |
Planted crops | Wild medicine herbs if too much is taken |
Meat from farm animals | Threatened wild animals |
Water (if we don’t pollute it) | Soil that has eroded won’t come back |
Air | |
ENERGY RESOURCES | |
Water power (hydroelectricity) | Coal |
Wind power | Oil |
From the sun – solar energy | Petrol and diesel – from oil |
Paraffin from oil |
Uses of crude oil | |
Fraction (or part) of the crude oil | Products from this fraction (sometimes after further treatment) |
Gas (G) | Gas fuels, such as calor gas, making other chemicals |
Petrol (P) | Fuel for cars, pesticides, drugs, plastics, fertilisers, detergents, solvents, making other chemicals |
Kerosene (K) | Paraffin, jet fuel, white spirit |
Diesel (D) | Fuel for trucks and buses, central heating oil |
Heavy Oils (HO) | Lubricating oils and grease, waxes, polishes, making other chemicals |
Residue (R) | Tar for road surfaces, waterproof roofing materials, fuel for power stations |
If you scored between 0–6 points, you currently have a low impact ecological footprint. Well done! See if you can improve your score by using some of the ideas below. | If you scored between 7–12 points, you currently have a medium impact ecological footprint. See if you can improve your score by using some of the ideas below. | If you scored between 13–18 points, you currently have a HIGH IMPACT ecological footprint. See if you can improve your score by using some of the ideas below. |
Set up a group in your area to discuss issues and raise awareness about the impact humans have on the environment. |
SCORE for the BALL | 5 | 4 | 3 | 2 | 1 |
Shape and size | Nearly perfect fit through hoop | Slight, but even gap <1 cm | Uneven gap >1 cm | Uneven fit with big gaps | Totally wrong size |
Rolls straight | Perfectly along the straight line | <5 cm off the line | 5–10 cm off the line | >10 cm off line | Not on the line at all |
Bounce from 1. 5 m | About 1 m | More than 50 cm | Between 25–50 cm | Only about 10–25 cm | Hardly any bounce at all |
Strong – how long it lasts | Lasts more than 10 minutes | 5–10 minutes of use before it is damaged | Lasts for 2–5 minutes before it is damaged | Lasts for 2 minutes before it becomes damaged | Not even 1 minute of use before it needs repair |
Soft enough to catch | Catch easily with no hurt | Occasionally causes stinging | Painful after a few catches | Some scratches | Damages your hands – scratches and stings |