The part of the water cycle that takes place when the temperature of a gas (water vapor) cools down and changes into water droplets.

The long-term average weather conditions that occur in a particular region.

A large area of air that has uniform temperature,humidity and pressure.

The height an object is above ground (or sea) level.

Water changes from a liquid to a gas (water vapor) when energy is added in the form of heat. It is part of the water cycle.

Because the Earth is spinning faster at the equator than the poles, air masses in the Northern Hemisphere curve up to the east and towards the equator. Air masses in the southern Hemisphere curve up to the east and towards the equator.

The amount of water vapor in the air.

Molecules in this sort of system are farther apart. Brings clouds and precipitation.

A large body of circulating air having molecules that are closer together.  The weather in this type of system is usually sunny and nice.

Feature on the Earth's surface,like mountains,plateaus and canyons.

The horizontal lines on a map or globe. It measures the distance north or south from the equator a location is.

Energy from the sun that heats the Earth.

Measured with a thermometer;is a measurement of how hot or cold an area is.

The temperature, humidity, atmosphere pressure and precipitation at a particular time.

Part of the water cycle, when water falls to the Earth as hail, rain, snow or sleet

The series of natural processes by which water continually moves throughout the hydrosphere.

The process by which atoms or molecules are highly organized into a defined structure. Factors such as temperature and air pressure affect the crystal's structure.

The process by which plants release water vapor through their leaves.

The movement of the air due to uneven heating of the Earth's surface.

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