Acid rain is polluted and is harmful to the environment.
The atmosphere is the gas that surrounds a planet.
Centigrade is a measure of temperature that is abbreviated C. Water freezes at 0°C and boils at 100°C.
Clouds are white or gray object that floats in the air and contains tiny water drops or ice particles.
A cyclone is a storm of rapidly spinning air that is very dangerous.
توفان گرد و خاک
A dust storm is a very strong wind that carries dust across the land. Dust storms occur in dry areas, like deserts.
Evaporation is the process in which a liquid goes into its gaseous form, for example, when liquid water becomes water vapor.
Fahrenheit is a measure of temperature that is abbreviated F. Water freezes at 32°F and boils at 212°F.
Balls of ice that fall from clouds are called hail or hailstones.
A hurricane is a strong storm with high winds and rain. The very center of the storm, called the eye, is calm.
Ice is frozen water.
An Ice Age is a time when the Earth becomes very cold and much of it is covered with ice and glaciers. There have been many Ice Ages on Earth; the last one lasted from about 2 million to 10,000 years ago.
توده یخ شناور
An iceberg is a huge chunk of ice that floats in the sea. Most of an iceberg is hidden under the water.
Icicles are hanging ice that are formed from dripping water.