Sun's Influence On Earth
19 Feb 2008The Sun's influences on the Earth are numerous. The sun radiates light, which combined with the rotation of the Earth on its axis, causes day and night. It also radiates heat, which with the revolutio...
ERNEST SENAYA
ERNEST SENAYA:
general-articles
Types Of Water
19 Feb 2008In general, water for drinking and cooking should be wholesome. It should be both potable and palatable. It must be bacteriologically and chemically safe for drinking and be good tasting. It should be...
- 556
general-articles
What Determines The Direction Of River Flow
19 Feb 2008Quite a few factors affect the direction a river takes. First of all, water runs downhill due to gravity. It may flow northward or southward, to the east, or to the west, but always downhill. Where wa...
- 666
speeches
Experiment To Test Why Big Ships Don't Sink
18 Feb 2008All you need is: * aluminum foil, * a few paper clips, * an empty aquarium (or similar large container) * and water Here's what you do: 1. Partially fill the aquarium or...
- 455
speeches
How Layers Of Rocks Help Predict Their Age
18 Feb 2008When rocks occur as undisturbed layers, we find that the lowest layers will be the oldest and topmost layers will be the youngest. Frequently rivers cut incisions into the earth's surface and expose s...
- 362
speeches
How The Chameleon Changes Its Color
18 Feb 2008Under a chameleon’s outer skin are special skin cells with colour (or pigment) in them. These cells are called chromatophores. The top layer of chromatophores have red or yellow pigment. The lower lay...
- 455
Load More
