Attached is a map of the
ocean floor. It shows plate boundaries and features of the continental
margin. All that you have to do is drag the letters from below and place them
where they belong. You can open the attached tutorial to learn how to add
letters and symbols. Complete the following; you only have to label one
of each feature except for the earthquakes:
1.
Label each of the boundaries listed using the letters or shapes
indicated: divergent (D), convergent (C) and transform fault boundaries (TF).
2.
Label each of the features listed:continental shelf, (SF) continental slope (SL), abyssal plain
(AP), seamount (SM), trench (TR) and a hot spot (HS).
3.
Label Iceland (IL), Azores (AZ), Surtsey (SS). St. Helena (SH),
Ascension (AS) and Tristan de Cunha (TC).
4.
Using the USGS earthquake site (USGS Earthquake Site),
label the quakes over a 5.0 magnitude (?) and the quake closest to your location
(?).below. In the upper right hand corner of the page, you will see
an icon that looks like a wheel or gear. Click on it and select 7-days, All
Magnitudes, Worldwide. The three lines to the left of the gear provides you
with a list of quakes starting with the most recent.
5.
Label the following: Rockies (RK), Himalayas (HM), Andes (AN)
and Appalachians (AP).
6.
Label the following: Hawai’i (HI), Mt. St. Helens (ST), Etna
(ET), Pelee (PE), Kilimanjaro (KI), Pinatubo (PI) and Fuji (FJ).
Questions: Make
sure that you answer each thoroughly.
- Describe
the relationship, if any, of the boundaries in #1 to the features that you
labeled in #2. - Describe
the relationship, if any, of the boundaries in #1 to the islands that you
labeled in #3. - Describe
the relationship, if any, of the boundaries in #1 to the quakes that you
labeled in #4. - Describe
the relationship, if any, of the boundaries in #1 to the mountain chains
that you labeled in #5. - Describe
the relationship, if any, of the boundaries in #1 to the volcanoes that
you labeled in #5. - What
do you think controls the appearance and form of the continental margin? - How
do you think that the mountain chains in #5 formed? - Here
is a thought question. Reflect back on your answer to
questions C and E. Based on those responses, does it seem logical
that Kilimanjaro is a much bigger volcano than any of the others,
excluding Hawai’i? Hawai’i is a different type of volcano. Be
sure to explain your answer.
USGS Earthquake site
When you have completed
the map, save it to your computer, and submit it in Schoology.
How to complete the exercise:
Open the “GEO101L_Lab1_Map” file provided below. Expand the image
(The bigger you can make the window, not the image itself, the easier it will
be!). All of the symbols/letters that you will need are below the image. If
not, see the directions below.
- If
you click on a letter/symbol, you will see a box form around it. - If
you grab it by a line, not a circle, you can move it anywhere you wish. - If
it is difficult to get the line, you can zoom in or make the box bigger
using the circles.
Once placed, you might
wish to make the font larger or change the color. Yellow looks good on blue,
for example. If, for some reason, the symbols are not the same as indicated,
you can use any symbol you wish; just inform your instructor of what each
represents. Do not change anything, however, if it appears as it should.
Note that you will
probably need more than the single?. If so, just copy it as many times as you
need. The easiest way to do that is to grab it by a line and copy and paste. You
may have to shift things around or change your choice a bit if an area gets too
crowded with symbols.
When you are done, save
the file to your hard drive for backup. You will now want to convert your page
into a PDF. This will keep all of your labels in position.
- On
a Mac, you can just hit Shift+Command+S and change the format.
Alternatively, choose Save as… and change the format. - On
a PC, choose File in the menu, then Save As. Under Save as Type, choose
PDF.
