Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
rock
|
a substance made of minerals and other substances
|
|
|
igneous rock
|
molten material that has hardened above or below the earths suface
|
|
|
sedimentry rock
|
layes of sediment that have been compacted and cemented
|
|
|
metamorphic rock
|
rock that has formed deep in the earths crust by great heat and preassure
|
|
|
rock cycle
|
a cycle that involves all three of the type of rocks.
|
|
|
paleontologist
|
a person who studies fossils
|
|
|
petrified fossil
|
a fossil that has been made into rock
|
|
|
carbon film
|
thin layers of carbon on a rock
|
|
|
mold
|
a impression of the outside of an organism
|
|
|
cast
|
3-d form of an organism
|
|
|
trace fossil
|
an imprint or object that and organism leaves behind
|
|
|
perserved fossil
|
an organism is perserved in amber, tar, or ice
|
|
|
compaction
|
preesure on sediment
|
|
|
cementation
|
when a mineral christalizes, water gets squeezed out leaving minerals to cement the rock together
|
|
|
absolute age
|
the number of years since the rock formed
|
|
|
relative age
|
the rocks age compared to the ages of other rocks
|
|
|
law of superposition
|
a geologic princpal that states in horizontal rock layers that each layer is older than the one above it and younger than the layer below it
|
