what isn't known about saturn
~ no one knows how long a day on saturn is
what is necessary to be considered a planet
~ 1. a planet orbits the sun directly
2. a planet is large enough to have formed a spherical shape
3. a planet has cleared the neighbourhood around its orbit (this omits pluto a...
Atmosphere - air
Biosphere - living things
Geosphere - rocks, landforms and earth's interior
What is uniformitarianism?
✓✓✓✓~ If it is happening now, it has happened before and it will happen again. Things
happen slowly
What is catastrophism?
✓✓✓✓~ One big sudden change, only true for meteor impacts. Shaping earth's landscape
by catastrophes
Talk about Earth as a system
✓✓✓✓~ - Four systems are linked through their interactions
- Is powered by energy from the sun and heat from earth's interior
,- Humans are part of this system, our actions produce large scale changes in all
four spheres
What is physical geology?
✓✓✓✓~ Study of earth materials to understand processes that operate on and beneath its
surface
What is historical geology?
✓✓✓✓~ Study of the origin of the earth and its development through time
What is the Big Bang Theory?
✓✓✓✓~ Large explosion that sent all matter in the universe flying outwards at incredible
speeds
What is the nebular hypothesis?
✓✓✓✓~ Bodies in the solar system evolved from solar nebula
How are protosun and protoplanets formed?
✓✓✓✓~ Formed by contracting, slowly spiraling nebula
What happened 4.6-4.3 BYA
,✓✓✓✓~ - matter congeals enough to form the earth
- the earth will now be bombarded by various rocks from space
- moon forms from collison
What happened in the hadeon eon?
✓✓✓✓~ - 4.3 - 3.8 BYA
- unstable crust forms
- there was no life
- iron is pulled to core
- lighter elements to the surface
What happened in the archaen eon?
✓✓✓✓~ - 3.8 - 2.5 BYA
- Constant volcanic activity
- No continents
- Atmosphere full of methane and devoid of oxygen
- oceans are acidic and full of dissolved iron
- Bacteria form and create oxygen
, What are the types of seismic waves?
✓✓✓✓~ P waves, S waves, surface waves
What are the layers of the earth?
✓✓✓✓~ - crust (solid)
- mantle (plastic solid)
- core (liquid outer, solid inner)
What is the rock cycle?
✓✓✓✓~ the rock cycle is a loop where one type of rock changes to another. Rocks
constantly form, change and re-form over long spans of time
Steps of the rock cycle
✓✓✓✓~ 1. Molten magma becomes igneous rock
2. Weathering creates sediments
3. Sediments lithify into sedimentary rock
4. Burial and heat produce metamorphic rock
5. More heat then start over
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 Latestupdate. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.19. You're not tied to anything after your purchase.
