Vocab I
hardened tree sap
often a source of insect fossils
amber
A rock that has been changed by heat, by pressure, or by both
metamorphic rock
the way light bounces off a mineral
luster
Igneous means
fire made
petrified means
turned to stone
a fossil created by a print or impression
imprint
cast
not always a useful property, because a mineral may come in many different varieties
color
Name a type of igneous rock
I.E. granite, obsidian, basalt
True or False: Entire animals have been preserved by being frozen
true
the age of something compared with the age of another thing
relative age
a hollow fossil form clearly showing the outside features of the organisms
mold
minerals can looks shiny, glassy, dull or even
greasy
a type of Sedimentary rock that were once made up of living things such as shells and skeletons of dead sea animals (built up on the ocean floor) can for a type of
limestone
shells often leave behind what type of fossils
molds
a naturally occurring substance that is neither plant nor animal
mineral
rock formed when bits or layers of rocks are cemented together
sedimentary rock
a clue from rubbing a mineral gently but firmly on a streak plate
streak
metamorphic means
changed in form
dinosaur tracks are an example of ___________________ fossils
imprints
Fire-Made rock formed from hot, molten rock material.
Igneous Rock
a process by which rocks are changed from one type into another
rock cycle
this can be tested by how likely the mineral is to be scratched (testers are a fingernails, a copper penny, and an iron nail)
hardness
______________ is an example of metamorphic rock.
marble
What information can fossils give us?
Answers will vary.