Exam (elaborations)
Earth Science 101 Correct Answers Latest Version
- Course
- Institution
Earth Science 101 Correct Answers Latest Version
[Show more]
Content preview
Earth Science 101 Correct Answers LatestVersion
The Mesozoic Era was the Age of Dinosaurs, and the current Cenozoic Era is the Age of _____. Answer:
mammals
What divides the two major eons (the Precambrian and Phanerozoic Eons)? Answer: The
appearance of multicellular organisms.
How does an eon differ from an era? Answer: An eon spans hundreds to thousands of millions of
years, while eras span tens to hundreds of millions of years.
Catastrophism assumes that the Earth's landscape was shaped by _____. Answer: violent, short-
lived natural events
James Hutton's theory of _____ earned him the title of 'The Father of Modern Geology.' Answer:
uniformitarianism
Today, geologists believe mostly in _____, with a little bit of _____. Answer: uniformitarianism;
catastrophism
An interface between discontinuous layers of rock is called _____. Answer: an unconformity
Any inclusion found within sedimentary rock must be _____ that rock. Answer: older than
Any fault lines or igneous intrusions that cut across a set of rock strata must be _____ that set of rock.
Answer: younger than
,The Principle of Original Horizontality applies only to _____ rocks. Answer: sedimentary
Radiometric dating is a method used to date rocks based on what? Answer: The known decay rate
of radioactive isotopes within the rocks
The best conditions for preservation of soft tissues are _____ temperatures and _____ air. Answer:
cold; dry
ALL atoms of the same element have: Answer: the same number of protons.
The mass number indicates: Answer: the total number of neutrons and protons.
The nucleus of an atom: Answer: is positively charged.
What is the most common state of matter in the universe? Answer: Plasma
The phase change when gas turns directly into a solid is called: Answer: deposition.
The phase change when a solid goes directly to a gas is called: Answer: sublimation.
Which type of reaction is involved with nuclear reactors? Answer: Fission
Which part of the Earth is the lithosphere? Answer: Crust
The interior of the Earth is part of which sphere? Answer: The geosphere
, How does the mantle differ from the crust? Answer: The mantle is the thickest layer of the earth,
while the crust is the thinnest.
What is the cause of earthquakes, volcanoes, and mountains on Earth? Answer: Convection
currents in the mantle.
How does the inner core differ from the outer core? Answer: The inner core is solid, while the outer
core is liquid.
Which parts of the Earth are contained in the lithosphere? Answer: The upper mantle and the crust.
Why is the inner core solid? Answer: Because it is under too much pressure to melt.
Why can both P and S waves travel through the mantle? Answer: The mantle is a solid.
Where was North America located when it was part of Laurasia? Answer: Near Europe and Asia.
Convection is: Answer: when hot magma near the core rises to the crust, cools, and sinks back
down, forming a current in the mantle.
When plates that are higher at the spreading center flow downhill and eventually flatten out to the
ocean floor, we call that _____. Answer: ridge push
What separates the South American plate and the African plate? Answer: The Mid-Atlantic Ridge
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Schoolflix. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77973 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now