GEO 002 Midterm Study Guide
2026 Exam Questions and
Answers | 100% Solved
What drives the seasonality of CO2
concentrations observed in the atmosphere? - 🧠ANSWER
✔✔Photosynthetic Activity.
What, approximately, is the natural range of CO2
in the atmosphere over the last several
hundreds of thousands of years? - 🧠ANSWER ✔✔170 PPM- 280 PPM.
,How does glacial ice form? - 🧠ANSWER ✔✔Snow falls on previously fallen
snow, many layers build up and the bottom layers are compacted
squeezing air out, turning into granular snow and firn and then glacial ice
What are important human sources of CO2? - 🧠ANSWER ✔✔The burning
of fossil fuels (coal, natural gas, and oil), cement manufacturing,
deforestation, etc.
How far back in Earth's history must we go to find CO2
levels similar to those observed
today? What was the world like at that time? - 🧠ANSWER ✔✔We'd have to
travel back in time 15-20 million years.
Global temperatures were 5-10 degrees Fahrenheit higher than they are
today and the sea level was approximately 75-120 feet higher. There was
also no permanent sea ice cap in the Arctic and very little ice in Antarctica.
How high are CO2
concentrations in the atmosphere today? - 🧠ANSWER ✔✔400 PPM
When did dramatic anthropogenic increases in atmospheric CO2
begin? - 🧠ANSWER ✔✔Around the 1950s
, What are some of the existing evidence for (consequences of) global
warming? For example, what drives the relationship between global
warming and sea level? pH in the oceans? - 🧠ANSWER ✔✔Global
warming causes the world's temperature to rise and as the world warms up,
glaciers in the ice caps melt, causing the sea level to rise as well as
causing Ocean acidification.
What are some recent successes in battling anthropogenic environmental
problems? - 🧠ANSWER ✔✔Los Angeles air quality improving and
Cleveland's Cuyahoga River Restoration
What is the difference between relative and absolute dating? - 🧠ANSWER
✔✔Relative dating does not offer specific dates, it simply allows us to
determine if one artifact is older than another. Absolute dating methods
provide more specific origin dates and time ranges, such as an age range
in years.
What are the characteristics and the value of index fossils? How are they
used in defining geologic time? - 🧠ANSWER ✔✔Index fossils are the basis
for defining boundaries in the geologic time scale and for the correlation of
strata. They are useful for defining geological time periods.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
2026 Exam Questions and
Answers | 100% Solved
What drives the seasonality of CO2
concentrations observed in the atmosphere? - 🧠ANSWER
✔✔Photosynthetic Activity.
What, approximately, is the natural range of CO2
in the atmosphere over the last several
hundreds of thousands of years? - 🧠ANSWER ✔✔170 PPM- 280 PPM.
,How does glacial ice form? - 🧠ANSWER ✔✔Snow falls on previously fallen
snow, many layers build up and the bottom layers are compacted
squeezing air out, turning into granular snow and firn and then glacial ice
What are important human sources of CO2? - 🧠ANSWER ✔✔The burning
of fossil fuels (coal, natural gas, and oil), cement manufacturing,
deforestation, etc.
How far back in Earth's history must we go to find CO2
levels similar to those observed
today? What was the world like at that time? - 🧠ANSWER ✔✔We'd have to
travel back in time 15-20 million years.
Global temperatures were 5-10 degrees Fahrenheit higher than they are
today and the sea level was approximately 75-120 feet higher. There was
also no permanent sea ice cap in the Arctic and very little ice in Antarctica.
How high are CO2
concentrations in the atmosphere today? - 🧠ANSWER ✔✔400 PPM
When did dramatic anthropogenic increases in atmospheric CO2
begin? - 🧠ANSWER ✔✔Around the 1950s
, What are some of the existing evidence for (consequences of) global
warming? For example, what drives the relationship between global
warming and sea level? pH in the oceans? - 🧠ANSWER ✔✔Global
warming causes the world's temperature to rise and as the world warms up,
glaciers in the ice caps melt, causing the sea level to rise as well as
causing Ocean acidification.
What are some recent successes in battling anthropogenic environmental
problems? - 🧠ANSWER ✔✔Los Angeles air quality improving and
Cleveland's Cuyahoga River Restoration
What is the difference between relative and absolute dating? - 🧠ANSWER
✔✔Relative dating does not offer specific dates, it simply allows us to
determine if one artifact is older than another. Absolute dating methods
provide more specific origin dates and time ranges, such as an age range
in years.
What are the characteristics and the value of index fossils? How are they
used in defining geologic time? - 🧠ANSWER ✔✔Index fossils are the basis
for defining boundaries in the geologic time scale and for the correlation of
strata. They are useful for defining geological time periods.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
