The Hertzsprung-Russel Diagram

Describe the Hertzsprung-Russel diagram. How is it useful in classifying stars? Where do stars tend to cluster on the diagram? Where on the H-R diagram does a star spend most of its life?

Thunderstorms: Prevalence in Colorado/New Mexico

Given your understanding of the conditions required for the formation of a thunderstorm, why would there be so many thunderstorms in eastern Colorado and northeastern New Mexico? What is so special about this relatively small area?

Fill in the blank and explain

Please list five major classes of material comprising atmospheric particles: a.______________ b.______________ 3.______________ 4.______________ 5.______________ What is the likely effect of each on the environment? On human health?