Sediment
What type of sediment can be found in a beach environment?
sand
What is the definition of environment?
all of the living and non-living things in an area
What type of evidence shows that an environment has changed over time?
different rock layers
What is the first step in how sedimentary rock forms?
erosion/weathering (pieces of rock are loosened by weathering)
What type of sedimentary rock is made mostly of silt?
siltstone
What type of sediment can be found in a deep ocean environment?
clay
What is the definition of stable?
staying mostly the same
What are the two vocabulary words that explain how sedimentary rocks are created?
compact and cement
What is sediment?
sand, gravel, or silt (makes up rock)
Name one type of rock that is made mostly of clay?
shale or mudstone
What type of sediment can be found in a river delta environment?
silt
What is a geologist?
a scientist who studies the solid parts of the Earth, like rocks and fossils
What are rocks made of?
sediment/minerals
What is compaction?
lower sediment being pushed together by upper layers
conglomerate rock
What two types of sediment can be found in a flood plain environment?
clay and silt
What is sedimentary rock?
rocks that is formed from sediment cementing together
What claim can be made about the layer of the rocky outcrop where mudstone, Mosasaurus, and Mortoniceras were found?
that this layer was created in the deep ocean
What is the last step in how sedimentary rock forms?
cementation (when the sediment hardens to create a rock layer)
What 2 types of rocks are made in slow moving water?
mudstone and siltstone
Name at least 2 types of environments clay can be found in?
floodplains, lakes, shallow ocean, or deep ocean.
What is a fossil?
a (part or whole) plant or animal preserved in rock
What claim can be made about the layer of the rocky outcrop where siltstone and Lepidodendron was found?
it was once a river delta or floodplain
What needs to be present in an environment for sedimentary rock to form?
water
What 2 types of rocks are made in fast moving water?
conglomerate and sandstone