Californa Science Center

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Alqarni, Abdullah
Homework Assignment # 8
Geology 1, Section # 1176 or 1177 (pick one)
Dr. Beraki Woldehaimanot
Date (assignment completed) QUESTIONS
GEOLOGIC TIME 1. Distinguish between numerical (radioactive) dates and relative dates. numerical specify the actual number of years that have passed since an event occurred; relative means placing rocks in their property sequences of formation

2. Refer to the geologic cross section accompanying question 10 on page 333 (your textbook). Your task is to place the lettered features in the proper sequence, from oldest to youngest.

3. Would you expect to find fossils of humans and Dinosaurs in the same rock? Explain.


4. Define half-life.
Half-life is defined as the time it takes for one half of a radioactive element to decay into a daughter isotope.

5. Answer question 6 from page 332 in your textbook (section: Give It Some Though).

6. Answer question 10 from page 333 in your textbook (section: Give It Some Though).(same as # 2) RUNNING WATER & GROUNDWATER
7. Over the oceans, evaporation exceeds precipitation, yet sea level does not drop. Explain why.
Most precipitation originates by evaporation from the oceans. Over time, water evaporated from the oceans is replenished by inflow of freshwater from rivers and streams. Continental ice sheets and glaciers have a strong effect on sea level changes. Expanding glacial ice volumes result in lowered sea level, shrinking ice sheets and glaciers effect rising sea level.

8. List factors that cause infiltration and runoff to vary from place to place and from time to time.
Textural properties of the surface material, kinds and abundance of vegetation, topography, and delivery mode of the moisture all have important effects on infiltration capacity.
Permeable, initially unsaturated, highly porous regolith can hold up to 30…...

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