7th Grade Science Student ebook

12.1 EVIDENCE FROM ROCKS

CHAPTER 12: EARTH AND LIFE HISTORY

12.1 Section Review

1. Who is Nicolas Steno? What ideas did he come up with that
   have contributed to modern geology?


2. A river cuts through a canyon and exposes the rock layers. How
   would the rock layers on either side of the canyon compare?
   Explain your reasoning.


3. What idea is represented in Figure 12.8? Which fossil is the
   oldest? Which is the newest? How can you tell?


4. True or False: Superposition states that rock layers near the
   surface of Earth are more recent than rock layers further from
   the surface. Explain your reasoning.


5. Study the following picture. Which is the oldest layer of rock?
   Which layer is the newest?


6. The rock in Figure 12.9 has many features. Use what you know
   about relative dating to place the features in order of occurrence
   from oldest to newest.


7. What are inclusions? Which part of a chocolate chip cookie are
   similar to inclusions?

Figure 12.8: Use the picture above to

answer question 3.

Figure 12.9: Use the picture above to

answer question 6.