Temperature changes during the day or night can be great   6      small. This depends partly 7      how many clouds are in the sky.   8         there are many clouds during the night, they act like tile covers on your bed. They blanket the earth and keep the air from losing much of   9         heat. The temperature usually does not drop much during such a night. When there are many clouds during   10         day, some of the sun's energy will not reach the earth. The temperature usually does not rise much on such a day.