When CO2 levels were low, temperatures were ______ and Earth was _____________.
Paleoclimate

Quiz
•
Social Studies
•
9th - 12th Grade
•
Easy
Melissa Vigil
Used 203+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
cooler; in an ice age (glacial period)
cooler; warming (interglacial period)
warmer; in an ice age (glacial period)
warmer; warming (interglacial period)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When CO2 levels were high, temperatures were ______ and Earth was _____________.
cooler; in an ice age (glacial period)
cooler; warming (interglacial period)
warmer; in an ice age (glacial period)
warmer; warming (interglacial period)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Oxygen isotopes are used to measure past temperatures. Isotopes have different numbers of...
protons
neutrons
electrons
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A greater amount of 18O in an ice core sample means temperatures were _________ because there was ________ evaporation.
colder; less
colder; more
warmer; less
warmer; more
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A greater amount of 18O in a foram ocean sediment sample means temperatures were _________ because there was ________ evaporation.
colder; less
colder; more
warmer; less
warmer; more
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the rate of modern warming compare to other periods?
It is slower than the rate in the Cretaceous and PETM periods.
It is equal to the rate in the Cretaceous and PETM periods.
It is faster than the rate in the Cretaceous and PETM periods.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary cause of modern warming?
peat fires
respiration
fossil fuel burning
volcanic eruptions
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