WorksheetsFossils and Rocks
Total questions: 16
Worksheet time: 8mins
Igneous rocks are formed by
cooled lava
heat and pressure changes
layers of sediment are cemented together
Metamorphic rocks are formed by
layers of sediment cemented together
heat and pressure changes
cooled lava
sedimentary rocks are formed by
heat and pressure changes
cooled lava
layers of sediment are cemented together
Fossils are formed by becoming
trapped in amber or asphalt
petrified
frozen
buried in rock
all of the above
a trace fossil is
an animal that died
a fossilized structure that formed in sedimentary rock by animal activity or in soft sediments
an insect that was trapped in amber
uniformitarianism
a principle that states that when a rock is buried underground geological processes will state that it will come back to the surface
a principle that states that geological processes in the past can be explained by current geological processes
the principle of when an animal dies biological processes can explain geological processes
How can sedimentary rocks show Earth's history?
features
texture
composition
all of the above
What can fossils tell us about Earth's history?
environmental changes over time
shows what the environment was like before organisms were alive
how old Earth is and when the Earth will turn flat
What do Earth's surface features tell us?
Continents moved
The Earth spins and revolves around the sun
landforms change over time
How can scientist study Earth's climate history
ice
trees
sea floor sediments
fossils
How does the erosion of mountains support the principle of uniformitarianism?
Because erosion that goes on today happened in a similar way in the past
Because erosion did not happen in the past but does today
Because erosion that goes on today happened in a different way in the past
Why are fossils not found in metamorphic rocks?
the pressure crushes the fossil and it breaks apart
buried very deep and decomposes and melts because of the high temperatures deep down
becomes in contact with lava or magma and melts
Why are fossils not found in igneous rocks
the pressure crushes the fossil and breaks apart
buried very deep and decomposes and melts because of the high temperatures deep down
becomes in contact with lava or magma and melts
Why are fossils mostly found in sedimentary rocks?
buried very deep and decomposes and melts because of the high temperatures deep down
animal dies and is covered in layers of sediment which preserves the remains from decay. Then flesh decays and the bones turn into stone forming a fossil.
pressure and heat decompose the remains so there is a fossil
Which rock is the oldest
location A
location B
location C
location D
Which rock is the youngest?
location A
location B
location C
location D
