GEO 101C Module 1 QUIZ: Mastery Exercise/Ques 1 / 1 pts tion 1
What do the volatile gases in magma provide in an eruption?
calming effect
... [Show More] liquid
force
nothing
Correct! Volatiles provide the force behind the eruption.
Ques 1 / 1 pts tion 2
What did Wegner find in the frozen region of the Arctic Circle that offered evidence for continental drift?
desert sandstones thick marine sediments
tropical plant fossils
volcanic ash deposits
This study source was downloaded by 100000847426977 from CourseHero.com on 02-27-2023 04:58:20 GMT -06:00
https://www.coursehero.com/file/191769257/Module-1-Mastery-Exercise-22WD-GEO101C-1pdf/
2/14/23, 2:01 AM Module 1: Mastery Exercise: 22WD-GEO101C-1
https://csuglobal.instructure.com/courses/75590/quizzes/682996 2/4
Correct! Tropical plant fossils near the Arctic Circle offered evidence for continental drift.
Ques 1 / 1 pts tion 3
The Mid-Atlantic Ridge is an example of which type of plate boundary?
convergent strike-slip
divergent
transform
Correct! The Mid-Atlantic Ridge is a divergent plate boundary.
Ques 1 / 1 pts tion 4
Most volcanism on Earth occurs at what kind of plate boundary?
convergent
divergent
transform fault hotspot
Correct! Most volcanism on Earth occurs at mid-ocean ridges, which are divergent boundaries.
Ques 1 / 1 pts tion 5
The volcanoes and deep valleys of East Africa are related to which process?
the fault allowing Arabia to slip westward past east Africa and penetrate into Turkey
the continental rift along which parts of the African continent are beginning to slowly separate
the transform fault aligned with the Red Sea, carrying the Arabian and African blocks in opposite directions the continental collision zone between Africa and the Zagros Mountains, along the southern margin of Eurasia
This study source was downloaded by 100000847426977 from CourseHero.com on 02-27-2023 04:58:20 GMT -06:00
https://www.coursehero.com/file/191769257/Module-1-Mastery-Exercise-22WD-GEO101C-1pdf/
2/14/23, 2:01 AM Module 1: Mastery Exercise: 22WD-GEO101C-1
https://csuglobal.instructure.com/courses/75590/quizzes/682996 3/4
Correct! The volcanoes and deep valleys of East Africa are related to a continental rift, along which parts of
the African continent are beginning to slowly separate.
Ques 1 / 1 pts tion 6
What is a lahar?
a cloud of hot ash produced by a volcanic eruption a type of volcanic eruption
a mudflow resulting from a volcanic eruption
an explosion associated with a volcanic eruption
Correct! A lahar is a volcanic mudflow which results when ice or snow on the volcano is suddenly melted
during an eruption.
Ques 1 / 1 pts tion 7
Which of the following DOES NOT typically occur at plate boundaries?
hotspots
fault zones volcanoes earthquakes
Correct! Hotspots are usually found within plates, not at their boundaries; a hotspot passing through Iceland
on the Mid-Atlantic Ridge is an exception.
Ques 1 / 1 pts tion 8
How old is the universe?
13.8 billion years
4.6 billion years 4,000 years 3.8 billion years
This study source was downloaded by 100000847426977 from CourseHero.com on 02-27-2023 04:58:20 GMT -06:00
https://www.coursehero.com/file/191769257/Module-1-Mastery-Exercise-22WD-GEO101C-1pdf/
2/14/23, 2:01 AM Module 1: Mastery Exercise: 22WD-GEO101C-1
https://csuglobal.instructure.com/courses/75590/quizzes/682996 4/4
Correct! The universe is 13.8 billion years old.
Ques 1 / 1 pts tion 9
Mount St. Helens and the other Cascade volcanoes are which of the following?
a row of young, active shield volcanoes built as western North America moved over a hot spot deep in the mantle
old, deeply-eroded, basaltic shield volcanoes built when western North America was over the present-day site of the
Hawaiian hot spot
young, active stratovolcanoes built on a continental margin above a sinking slab of oceanic lithosphere
old, deeply-eroded stratovolcanoes built before the Pacific Ocean existed
Correct! Mount St. Helens and the other Cascade volcanoes are young, active stratovolcanoes built on a
continental margin above a sinking slab of oceanic lithosphere. [Show Less]