Which of the following are greenhouse gases?  I. Carbon dioxide  II. Water vapor  III. Oxygen

Which of the following statements best describes the concept of catastrophism?

Like Saturn, Jupiter, Uranus, and Neptune have rings. However, Jupiter’s rings are not easily observed. What is the most likely explanation for the difference in visibility between the rings of Saturn and those of the other giants?

At what type of boundaries do volcanoes tend to form?

Earth has seven different motions. What is the name of the motion involving the slow reorientation of the Earth’s rotational axis on a 26,000 year cycle?

What type of texture would you expect an intrusive igneous rock to have?

Which of the following conditions would favor the plastic deformation of rocks:    I. High temperatures    II. Low pressures (rocks near the surface)    III. Rapid application of stress.

In the process of crystal formation, what conditions favor the formation of large crystals?

What is name assigned to distinctive fossils of plants or animals that were distributed widely but lived only a short time with a common extinction time?

Which of the following stream characteristics are typical of streams that are geologically young?   I. Small (narrow and shallow)   II. Slow moving   III. Waterfalls