Crust + Drifting Contents + Moving Earth Flashcards
studying
What is a fossils
preserved remains from an living organism
person that finds fossils is called
Palaeontologist
Amber fossils are
full body INSECTS preserved in tree sap + can be preserved for millions of yrs
Carbonation fossils are
dissolved organism except the carbon which leaves a residue showing an outline of the organism
Freezing fossils are
preserved by ice for thousands yrs if it doesn’t melt
Body fossils are a
portion of the actual organism remain E.g tooth, bone
Trace fossils are
on organism’s but ‘‘traces’’ in the rocks.
Types of trace fossils
Cast & mold, animal trace, & impression.
what rock are fossils found
Sedimentary rock
what type of Sedimentary
shale, limestone, sandstone rock
Fake fossils that looks like fossils are called
Pseudo fossils
how thick is the crust
6km - 40km
what minerals are the crust made up of
rock, sand, soil
how thick is the mantle
around 2900km
how hot and how fast does the mantle move
semi-molten + moves very slowly
how thick is the outer core
2000km
what is the molten liquid made up of in the outer core
iron and nickel
how hot in the molten liquid in the outer core
5000 degrees temp
what’s the radius of the inner core
1100km
is the inner core solid or liquid
solid
What was the name of the scientist that argued that the continents were once together
Alfred Wegener
When did Alfred Wegener argue that the continents were together
1912
how many yrs ago did the continents start to break
250 million yrs
When did Alfred’s theory confirmed to be true
1960s
