Click on http://vathena.arc.nasa.gov/curric/weather/pricloud/index.html. Answer the following questions.

1. What does the word "Cirrus" mean?
2. Are cirrus clouds low or high?
3. What are the large clouds that sometimes look like huge puffs of cotton?
4. What root word tells us that a cloud brings rain?
5. Which type of cloud usually covers the whole sky and brings gray days?
   

Click on http://www.fi.edu/weather/events/fog.html. Answer the following questions.

1. Fog is a _____ based on the ground, rather than in the atmosphere.
2. Fog forms when there is a lot of _______near the ground, or when the air near the ground cools to the dew point.

Click on http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/dvlp/cnvct.rxml. Complete the missing information.

1. As the earth is heated by the sun, bubbles of ________ _________ rise upward from the warm surface.
2. If a thermal (vapor) is able to rise high enough to cool to its _____________ point, the moisture condenses and becomes visible as a ___________________.