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1. True or False: Geologists not only study the earth, but they can specialize and study things like the oceans and even other planets.
TRUE
FALSE

TRUE. Geologists not only study the earth, but they can specialize and study things like the oceans and even other planets.

2. True or False: The eon we live in currently, the Phanerozoic, is divided into three eras.
TRUE
FALSE

TRUE. The Phanerozoic Eon is divided into three eras: Cenozoic, Mesozoic, and Paleozoic. The Cenozoic Era is the most recent and the Paleozoic Era is the oldest of the three.

3. The concept of geological time is based on:
a) relative time and obsolete time
b) absolute time and relative time
c) relative time and relative fossils
d) absolute time and deep time

4. Which of these segments of time is longest?
a) eon
b) epoch
c) era
d) period

From longest to shortest, the segments of time are eon, era, period, and epoch.

5. Placing geological events in a chronological sequence by observing the rock record is called:
a) principle dating
b) double dating
c) relative dating
d) radioactive dating

6. Around how long ago did humans start to appear on Earth?
a) 40,000 years
b) 400,000 years
c) 4 million years
d) 40 million years

Humans first appeared on Earth about 4 million years ago. It seems like a long time ago, but itís really not. If the 4.6 billion years of the Earth’s history were compacted into one year, humans wouldn’t appear until 4:00 P.M., December 31st!

7. The process of turning a sediment into a sedimentary rock is:
a) lithification
b) cross-cutting
c) condension
d) mummification

8. What principle are we using if we see marine fossils in Ohio and assume that Ohio was once under ocean water?
a) uniformitarianism
b) faunal dating
c) metamorphism
d) lateral continuity

The principle of uniformitarianism. Since marine animals live in the sea today, we would assume they also did in the past. And since we found marine fossils in Ohio, we can assume that Ohio was once underwater.

9. Most sedimentary rocks are deposited in flat-lying layers. This idea is called the principle of:
a) uniformitarianism
b) faunal dating
c) metamorphism
d) lateral continuity

10. The principle of uniformitarianism includes:
a) events that are sudden and catastrophic.
b) geological events that occur slowly.
c) ice ages and meteor impacts.
d) modern processes.
e) all of the above

11. In where do geologists commonly find fossils?
a) sedimentary rock
b) meteorites
c) colonial houses
d) Fossils R’ Us

12. Rocks are made of ____________.
Rocks are made of minerals

13. A/an ____________ lava flow has a lumpier texture than a pahoehoe lava flow.
An aa lava flow has a lumpier texture than a pahoehoe lava flow.

14. Pyroclastic materials include ash, pumice, and ____________.
Pyroclastic materials include ash, pumice, and tuff.

15. The big, concave-sided symmetrical edifices we usually associate with volcanoes are called ____________.
The big, concave-sided symmetrical edifices we usually associate with volcanoes are called composite volcanoes.

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