Science Quiz Flashcards
(13 cards)
Weathering is when
Rocks are broken down into smaller sediments
What are the 3 types of rocks
Igneous, metamorphic, and sedimentary
If sedimentary rock undergoes enough heat and pressure to form crystals, which type of rock will it change into
Metamorphic
Convergent boundaries
➡️⬅️ forms volcanoes and mountains
Divergent
⬅️➡️ ridge volcanoes and valleys
Transform
⬆️⬇️ can cause earthquake
What is sea-floor spreading? Is crust created or destroyed?
New areas of oceanic crust. Crust is created.
What are the 4 layers of the earth
Crust, mantle, outer core, and inner core
Where do convection currents take place
Mantle
Law of superposition
States that as long as layers of soil are undisturbed the oldest layer will be on the bottom and the newest layer will be on the top
Stratigraphy
Oldest method that archeologists use to date artifacts
Law of original horizontality
All sedimentary rocks are deposited flat initially. If you find them at a angle they have been moved
Law of crossing-cutting relationships
Igneous rocks or fault that cut into other rocks are the youngest