Download Oceanography Worksheet #1

Name:_____________________
Period: ________
Oceanography Worksheet #1
The diagram below represents a landscape in which sediments were deposited by a continental glacier.
Letters A, B, C, D, and E represent locations in this area.
1. Classification of the ocean bottom into the areas
shown is based on the
1 distance from continental landmasses
2 topography of the ocean floor
3 age of ocean-bottom rocks
4 type of ocean-bottom sediments
2. At which location would land-derived sediments
most likely be accumulating on the ocean
bottom?
1 A
3 C
2 B
4 D
3. Which statement about the age of the ocean-floor
rocks is correct?
1 All ocean-floor rocks are generally the same
age.
2 Rocks at location C are generally older than
rocks at locations A and B.
3 Rocks at location C are generally younger
than rocks at locations A and B.
4 Igneous rocks at location D are generally
younger than rocks at location C.
Base your answers to questions 4- 7 on the diagram below. The diagram shows ocean waves approaching a
shoreline. A groin (a short wall of rocks perpendicular to the shoreline) and a breakwater (an offshore structure)
have been constructed along the beach. Letters A, B, C, D, and E represent locations in the area.
4. What is the most common cause of the
approaching waves??
1 underwater earthquakes
2 variations in ocean-water density
3 the gravitational effect of the Moon
4 winds at the ocean surface
6. At which location will the beach first begin to
widen due to sand deposition?
1 A
3 C
2 B
4 E
5. This shoreline is located along the east coast of
North America. Which ocean current would most
likely modify the climate of this shoreline?
1 Gulf Stream
3 Brazil Current
2 Canaries Current
4 California Current
7. The size of the bulge in the beach at position
8. The curved pattern of surface currents in the
North Atlantic is most affected by
1 the Earth’s rotation
2 convection in the Earth’s mantle
3 density differences of ocean water
4 gravitational attraction of the Moon
10. When the seafloor moves as a result of an
underwater earthquake and a large tsunami
develops, what will most likely occur?
1 Deep-ocean sediments will be transported
over great distances.
2 No destruction will occur near the origin of
the earthquake.
3 The direction of the tsunami will be determined by the magnitude of the earthquake.
4 Severe destruction will occur in coastal areas.
9. What is the source of most dissolved minerals in
seawater?
1 weathering of seafloor rocks
2 weathering and erosion of continental rocks
3 deep-ocean organic-matter sediments
4 gases from underwater volcanic eruptions
Note question 7 has only three choices.
D will
1
2
3
decrease
increase
remain the same