Blog

An example of a sedimentary rock is

Which of the following is not a feature of a good index fossil?

The process of matching up rock layers in different localities by such means as index fossils is called

The four seasons-spring, summer, fall, and winter-are caused by the Sun’s changing its daily altitude over a period of 1 year. The Sun’s altitude changes because __________.

Earth’s thin, rocky, outer layer on which we live is called the

Which of the following is not generally used in mineral identification?

When an earthquake occurs, the point of initial energy release is called the earthquake’s ______________.

Rocks formed by the alteration of preexisting rock in response to the effects of pressure, temperature, or the gain or loss of chemical components are classified as ______________.

Which of the following eons is the oldest?

About how long ago was the last retreat of the glaciers from North America and Europe?