GLG205 Confronting Global Change Summer 2011 MIDTERM TEST.
This test is worth 20% of your grade in the course. Instructor: Tutty, Ms. Lisa.
You will complete this test once without any aids (50 minutes writing time) and then you will
hand in your scantron form and you may choose to complete the same test again (with the help
of your classmates) on a new scantron form (50 minutes writing time). If your individual mark
is higher than your second version your individual mark will count for 100% of your midterm
test grade. If your second version mark is higher your individual mark will count for 75% of your
midterm test grade with the second version mark counting for the remaining 25% of your
midterm test grade.
This test consists of forty (40) multiple choice questions plus one bonus question. Guess if you
are unsure of the answers. Only answers bubbled in on your scantron BEFORE the end of the
test will be marked ‐ NO extra time will be allotted for bubbling in your answers at the end of
the test. Lectures 1‐4 and their associated readings are examinable material. There are 10
questions from each of these 4 sections. The field trip will not be tested until the final exam.
Page 1 of 14
Lecture 1 ‐ Introduction, Lithosphere, Earth's Interior (Textbook ch1, Ontario
1. Ch1: There are many cycles involved in balancing the natural systems on Earth, for example,
biogeochemical cycles such as the carbon cycle and other global scale cycles such as the
water/hydrologic cycle. a) true (96% then 99%) b) false
2. Ch3: The Hawaiian Islands are good examples of subduction zone volcanism. a) true b) false
(53% then 62%)
3. Ch4: Pahoehoe and aa are caused by current flow in sandy bottomed rivers. a) true b) false
(51% then 81%)
4. The four major Earth system spheres are the troposphere, the stratosphere, the mesosphere
and the thermosphere. a) true b) false (70% then 98%)
5. Which of the following statements is FALSE?
a) the lithosphere is the upper solid part of the Earth that interacts with the biosphere,
atmosphere and hydrosphere
b) there is mostly hydrogen and helium in the present day atmosphere (81% then 99%)
c) the cryosphere contains all of the frozen water on Earth
d) the biosphere contains all of the living and dead organic components of planet Earth
e) in classifying the interior of planet Earth by composition one would need to consider
the crust mantle and core
6. Which of the following statements is FALSE?
a) extrusive igneous rocks cool quickly and are thus fine grained
b) shield volcanoes such as those in Hawaii are basaltic
c) the ocean floor is made primarily of basalt
d) granite is an extrusive igneous rock which is high in silica content (88% then 99%)
e) rhyolite lava is a more viscous (sticky) magma than is basaltic magma
7. Examine the figure below. Which plutonic igneous rock has approximately 20% quartz, 5%
biotite mica, 15% amphibole, 10% potassium feldspar and 50% sodium rich plagioclase
feldspar? a) andesite b) dacite c) diorite d) gabbro e) granodiorite (45% then 93%) f)
Page 2 of 14
Figure 1: for question 7
8. Which of the following statements about limestone is FALSE?
a) limestone can be clastic b) limestone can be chemical c) limestone is a carbonate
d) sandstone is a clastic rock e) breccia has rounded clasts (69% then 98%)
9. Which of the following statements is FALSE?
a) the protolith of marble is limestone
b) if diorite is subjected to heat and pressure it becomes granite upon melting (70% then
c) phyllite is a low grade regional metamorphic rock that shines due to mica
d) gneiss is a foliated, high grade regional metamorphic rock
e) none of the above (by choosing this option you are saying that a‐d are all true, not
that option e itself is false)
10. Which of the following classifications is INcorrect (false)?
Answer Mineral class Environment of formation/description Example