Background Information
This page provides students and teachers with additional resources to help understand the topics in the lesson. This material can be used to enrich classroom activities, to provide students with a source of information, or be the basis for an outside project.
- Solar Flares
- Electricity and Magnetism
- Radio Transmissions
Sound - A detailed description of sound, how it is generated and how it propagates. Towards the bottom of the page there is a detailed discussion of radio transmissions.
Basic Facts about Radio Signals - Another great Windows on the Universe page.
- Levels of the Atmosphere
The Atmosphere - a description of the levels of the atmosphere from the NASA Space Academy web-site
The Atmosphere - from the NOVA On-line adventure series
- The Ionosphere
The Ionosphere - this is a page from the University of Michigan's Windows on the Universe, one of the best resources on the Internet for Earth and Space science information. Note that you can change the level of the information being presented by clicking on the beginner, intermediate, or advanced buttons on the top of the page.
- General
Glossary of Terms - This is a nice glossary of most of the term you will come across in this site. It is maintained by the Space Environment Center.