The Water Cycle On Earth

Explanation
The sun drives the water cycle because it provides the energy needed to evaporate water from the Earth's surface. When the sun's heat causes water to evaporate, it rises into the atmosphere and forms clouds. Eventually, the water vapor condenses and falls back to the Earth as precipitation, such as rain or snow. This continuous cycle of evaporation, condensation, and precipitation is driven by the energy from the sun.

Explanation
Air currents move water vapor around the globe, and when these currents reach a certain point of saturation, the water vapor condenses and forms cloud particles. These cloud particles then collide with each other, causing them to grow in size. Eventually, these particles become too heavy to be supported by the air currents and they fall out of the sky as precipitation, which can take the form of rain, snow, sleet, or hail. Therefore, precipitation is the correct answer.

Explanation
Aquifers are underground layers of permeable rock or soil that hold and transmit water. They act as natural storage spaces for freshwater, allowing it to be stored underground for long periods of time. The water in aquifers is typically recharged by precipitation or surface water seepage, and can be accessed through wells or springs. Aquifers are an important source of freshwater for drinking, irrigation, and industrial use, making them crucial for sustaining human and ecological needs.

Explanation
Condensation is the process by which water vapor, which is in its gaseous state, changes into liquid water. This occurs when the temperature of the air surrounding the water vapor drops, causing the water molecules to slow down and come closer together, forming liquid droplets. Therefore, the correct answer is "Liquid Water."

Explanation
Approximately 71% of the Earth's surface is covered with water. This is a well-known fact supported by scientific research and observations. The Earth's surface consists of oceans, seas, lakes, rivers, and other bodies of water, which collectively make up the majority of the planet's surface area. This high percentage of water coverage has significant implications for climate, weather patterns, and the existence of diverse aquatic ecosystems.