Fossils
Which part of an animal's body is least likely to become part of a fossil?
A. the bones
B. the teeth
C. the skin
D. the shell
C. the skin
Describe the texture of a rock with large grains.
Rough
Magma
What does a geologist do?
How many properties of rocks have we learned about?
What type of fossil is most common?
Imprints
What rock is formed by bits of rocks being pressed and cemented together?
Sedimentary
What are sedimentary rocks made up of?
Sediments
Define:
relative age
the age of something compared with another thing
Which property is the easiest to identify, but the least helpful?
Color
In which type of rock are most fossils found?
Sedimentary
What literally means "fire made?"
Igneous
Where do heat and pressure occur?
Deep underground
Define:
'mineral'
a naturally occurring substance that is neither plant nor animal
What tool is used to see what color mark a rock leaves behind when scraped against it?
Streak plate
What do you call hardened tree sap, that often preserves insects as fossils?
Amber
What type of rock is changed by heat, or pressure, or both?
Metamorphic
Describe weathering and erosion.
Wind and water may break up rocks and carry them away. The sediments are dropped off over time.
What type of fossil is formed or shaped within a mold?
Cast
What property can be tested using a fingernail, a copper penny, and a nail?
Hardness
What is Wisconsin's state fossil?
Trilobite
What type of rock is volcanic glass?
Metamorphic
What causes a metamorphic rock to become an igneous rock?
melting, then cooling and hardening
How does something become 'petrified?'
once-living parts are filled in by minerals
What is the term for how shiny a rock is?
Luster