Hydrogen is a volatile gas - it burns with explosive force. This makes it very useful as a fuel. Modern cars use petrol or diesel as fuel but each one pollutes the atmosphere. However, hydrogen powered cars produce water as waste, it is non-polluting. Hydrogen is looked upon as a future fuel for all vehicles and this suggestion has been put forward by both scientists and environmentalist.

1. This example style / symbol has been designed to stress the fact that hydrogen is a gas. The bubbles suggest that hydrogen is ‘bubbly’ and that it will float upwards. It is a friendly style.

2. This style / symbol has been designed to give the impression that hydrogen is ‘volatile’ and that it burns powerfully. The green suggests that it is also environmentally friendly.

3. This style / symbol emphasises hydrogen as a ‘green’ fuel, environmentally friendly. The green colours/shades and the sun in the background suggests clean, natural, green energy.

4. The style / symbol shown here emphasises the power of hydrogen as a fuel. The athlete is part of the symbol to give the fuel a sporty, active image.

Look at the way two of the styles / symbols shown above have been applied to the car bodywork. Design your own style / symbol representing hydrogen as an environmentally friendly fuel and apply it to the third drawing. Add notes explaining what your thoughts are regarding each design.