Lecture 11- What Is Geology Flashcards
What is geology
A branch of science dealing with Earth (our planet)
Geology deals with Earth’s: (3)
-Rocky body
-4.54 billion year history
-environmental changes
Geology comes from the Greek words:
Geo= Earth
Logos= discourse
What is a geologist
An earth scientist
What are 5 things geologists do?
-examine, characterize and classify Earth’s materials
-study Earth’s processes of change
-identify key relationships of cause and effect
-design, develop and test models explaining processes/observations
-publish inferences (evidence based conclusions) about Earth and how it functions
What is qualitative information
Information describing how something looks, feels, smells, sounds, tastes, behaves
Information WITHOUT specific NUMERICAL value and units
(Ex: mountain royal has higher elevation than the surrounding areas)
What is a geological record:
History of Earth as recorded in the rock/rock layers that make up its crust
Layers of earth can range from?
Mm to metres in thickness
Bottom layer is __ while top layer is __
Oldest, youngest
Layers have distinguishing features ranging from:
Sand grains/microscopic fossils to fossilized trees, dinosaurs and even ancient riverbeds.
What is quantitative information:
Information that can be measured using various tools
Informations with SPECIFIC NUMERICAL values and units
(Ex: Mount Royal has 3 peaks… #’s)
Geologist examine all of Earth’s materials but do so at different?
Spatial scales of observation
Earth is covered in ___ of rock laters
Millions
Each of the layers is the equivalent to:
A page in Earth’s history book/geologic record
What are spatial scales of observation?
Different levels at which we can make observations
Observations can be made at __ level to __ level
Global, atomic
What is a geologic time scale
-A calendar of events in earth’s history
-A representation of time based on earth’s geologic record/rock layers
-A tool breaking up/dividing history/time into usable, understandable segments/intervals
Macroscopic versus microscopic?
Macro= visible to naked eye, global, regional, local and hand sample
Micro= invisible to naked eye, microscopic and atomic/molecular
Within geologic time scale, how do geologists divide history/time?
Eons, eras, periods and epochs
Geologic time scale have been named and dated based on research carried out over more than a century.
what is the name of the abandoned ski hill (nessa im adding this because he said he might still test us on the stuff from the last slide)
Colline d’Outremont
