1 . Water cycle
①What is the water cycle? How does it affect (影响) us? The water cycle is very important to our existence. A cycle is another word for circle. The water cycle is like one continuous (连续的) circle. Water can be found in the form of liquid (drinking water), gas (vapor or steam), or a solid (ice or snow) at any given part of the water cycle. There are three phases that make up the water cycle. These phases are condensation, precipitation, and evaporation.
②Condensation is when water vapor in the air turns to liquid. Temperature and air pressure have a lot to do with condensation. Warm air can hold more water than cool air, and therefore the water vapor condenses (凝结) into small droplets as the temperature falls.
③Precipitation is what happens when the water vapor condenses into large droplets (水滴). Gravity (重力) pulls on the liquid droplets and causes them to fall to the ground. Precipitation can be in the form of snow, sleet, rain, or hail. Air temperature and wind patterns decide the type of precipitation.
④Evaporation is when liquid water changes to a gas. This happens with an increase (增长) in temperature or a dry wind blowing across the water. Gas rises into the air and forms clouds, sometimes it even forms fog.
1. According to the passage and the picture, which statement is FALSE?| A．Air temperature and wind patterns decide the type of precipitation. |
| B．Precipitation is what happens when the water vapor evaporates. |
| C．A cycle is another word for circle. The water cycle is like one continuous circle. |
| D．Gas rises into the air and forms clouds. |
| A．In the second paragraph. |
| B．Not in the passage. |
| C．In the fourth paragraph. |
| D．In the third paragraph. |
| A．tell readers about what happens when it rains |
| B．prove Earth’s orbiting the sun makes the water cycle |
| C．show how important condensation is to the Earth |
| D．share general information about the water cycle and its role |
A． | B． | C． | D． |
