Weather
September 2003 » Weather is defined as the atmospheric conditions at a particular time and place; climate is the average weather conditions for a given region over time. Weather is assessed in terms of temperature, wind, cloud cover, and precipitation, such as rain or snow.

Glaciers
Ogos 2003 » A valley glacier is a large mass of ice that forms on land and moves slowly downhill under its own weight. It is formed from snow that collects in cirques (moutain hollows also known as corries) and is compressed into ice as more and more snow accumulates.

Roots
Julai 2003 » Roots are the underground parts of plants. They have three main functions. First, they anchor the plant in the soil.

The ocean floor
Jun 2003 » The ocean floor comprises two sections: the continental shelf and slope and the deep-ocean floor. The continental shelf and slope are part of the continental crust but may extend far into the ocean.

Skin and hair
Mei 2003 » Skin is the body’s largest organ, a waterproof barrier that protects the internal organs against infection, injury and harmful sun rays. The skin is also an important sensory organ and helps to control body temperature.

X-Ray machine
April 2003 » The X-rays are generated by high speed electrons impinging on a tungsten target. The rays pass through the specimen and onto a photographic plate or imager.

The sun
Mac 2003 » THE Sun is the star at the centre of the Solar System. It is about five billion years old and will continue to shine as it does now for about another five billions years. The Sun is a yellow main sequence star about 1.4 million kilometers in diameter. It consists almost entirely of hydrogen and helium.

Bony fish
Februari 2003 » BONY fish, such as carp, trout, salmon, perch and cod, are by far the best known and largerst group of fish, with more than 20,000 species (over 95 per cent of all known fish). As their name suggests, bony fish have skeletons of sharks, jawless fish, and their relatives.

Kenali roket angkasa lepas
Januari 2003 » SPUTNIK milik kerajaan Rusia adalah roket satelit pertama di dunia yang dilancarkan ke angkasa lepas. Ia dilancarkan pada 1957. Sejak itu, beribu-ribu roket telah dilancarkan ke angkasa.