Explanation Text dan Contoh

EXPLANATION

Explanation is a text which tells processes relating to forming of natural, scientific, social and cultural phenomena.

Purpose: To explain the processes involved in the formation or working of natural or socio-cultural phenomena.

Generic Structure:
1. General statement
2. Explanation
3. Closing

Where Does Rain Come from?

Rain always comes from clouds. But where do clouds come from? How does all that water get into the sky?

Think about your bathroom. There is hot water in your bath. Steam goes up from the hot water. The steam makes small clouds in the bathroom. These warm clouds meet the cold walls and windows, and then we see small drops of water on the walls and windows.

The world is like your bathroom. The water in the oceans is warm when the sun shines on it. Some of this water goes up into the sky and makes clouds. The wind carries the clouds for hundreds of kilometers. Then the clouds meet cold air in the sky, and we see drops of water. The drops of water are rain.

The rain falls and runs into rivers. Rivers run into oceans. And the water from oceans makes clouds and more rain. So water is always moving from oceans to clouds to rain to rivers to oceans. So the rain on your head was on other heads before! The water in your garden was in other gardens in other countries.

taken  from Depeloping English Competencies: Adapted from Junior Comprehension 1, 1999

The Greenhouse Effect

The greenhouse effect is a warming of the air around us. It gets its name from the greenhouses that people use to grow plants. These greenhouses let in heat from sunlight and trap it inside. Earth’s atmosphere–the layer of air that surrounds our planet–also traps heat.

Greenhouse effect is raised temperature at a planet’s surface as result of heat energy being trapped by gases in the atmosphere. Certain gases cause the atmosphere to act like the glass in a greenhouse. As a result, the temperature of a planet’s surface may be higher than it otherwise would be–on Earth about 33º C (59ºF) higher. The main gases that produce the greenhouse effect on Earth are water vapour and carbon dioxide. Scientists suspect that increased discharge of carbon dioxide from human activity (notably motor transport and industry) is contributing to global warming.

taken  from Depeloping English Competencies: Source: http://www.ucas.edu/