Guidance Sheet #3 - for Quiz #3 on 08/01/96

1. How did the solar system form?
2. Why are there two types of planets in our solar system?
3. What are the properties of the newly discovered planets orbiting other stars? By what technique have these planets been found? How are these new planetary systems different from our own?
4. What are the basic properties of Venus, Earth, and Mars?
5. What are the key processes that have led to such differing atmospheres today for Venus, Earth, and Mars?
6. How can small changes in the earth's orbit cause the changes in climate known as the Ice Ages?
7. How has the presence of life on Earth influenced its properties as a planet over the past 3.5 billion years? How might ongoing effects of our global civilization significantly alter our planetary atmosphere and surface in the future?
8. What were the pre-biotic conditions on the Earth?

Astronomy 201 Homepage
Astronomy Mac Lab Homepage