fossil formation
these fossils are formed when minerals replace the organic material of an organism
what are petrified fossils?
this is molten material beneath earths surface
what is magma
In the law of superposition, rock layers below are always this.
what is older
This is the process where molten rock cools and hardens.
what is solidification
what is 100
these kinds of fossils show the activity of an organism such as footprints or burrows
what are trace fossils?
magma that flows onto earths surface is called ____
what is lava
An intrusion is always this than the rock layers around and beneath it.
what is younger
the earths crust is made up of these
what are rocks
scientists just found a dinosaur looking bone from 100 million years ago. what is this called
fossil
this kind of fossil is a thin carbon residue left behind by an organism
what are carbon films?
igneous rock that hardens when lava touches the earth surface is called______
extrusion
a break in the earths surface is called ____
what is a fault
this kind of rock is formed by layers of sediments
what is sedimentary rock
after 100 days of learning, tell one of your favorite parts of science with mrs lena
what is “all that apply”
these fossils are made when an impression of an organism is made into the rock and forms a cast
what are molds and casts?
This process occurs when magma pushes into bodies of rock beneath the surface.
what is intrusion
A fault is always this than the rock it cuts through.
what is younger
this kind of rock is formed by the cooling of magma
what is igneous rock
what will you get on your next earth science test
what is 100
least common types of fossils, in which the organism is preserved
what are preserved remains?
Igneous rocks are formed by the hardening of ____
what is magma or lava
Geologists look at the age of this rock layer to determine the relative age of a fault.
what is the most recent rock layer
extreme heat and pressure can change rocks into this type of rock
what is metamorphic 🪨
Mrs. Lena must be tired after teaching all of us for 100 days. what would be a good thing for her to do this upcoming break
what is relax, sleep, go on vacation, etc