Amphibian, moss, rush, and fern fossils date back to the ___ period.
The inner core is very dense and ___.
The continental crust is made mostly of ___.
Many geologists do ___ work at least part of the time.
Our earliest fossils date back to the ___ period.
The Earth's __ is made mostly of an iron and nickel alloy.
Geology is the study of the ___.
Geology is the study of how Earth's structures and organisms have changed over _____.
Crust, mantle, and core are the 3 main ___ of the Earth.
The Law of ___ states that any given rock bed is older than any rock bed on top of it.
This compression squeezes out water and leaves minerals that ___ the rock together.
With the passage of time, particles and chemical reactions cause the sediments at the bottom of the pile t0 become _____.
The ____ Gradient is the increase in temperature with depth in the Earth.
Continental and oceanic are the 2 layers of the Earth's ___.
Fossil __ has 3 major concepts when studying fossils.
Birds are thought to be descended from ___.
A knowledge of Earth's ___ is essential for understanding plate tectonics.
Down
___ promoted the Continental Drift Theory.
The ___ eon is thought to be the first eon on Earth from its birth.
Rock layers are also called ____.
The kinds of fossils in rock of different ages __ because life on Earth has changed through time.
Deposited rock ___ up in layers.
The mantle is made mostly of ___ rich rock.
The great bulk of fossil records are dominated by animals with ___.
The oceanic crust is made mostly of ___.
Geology is the study of those materials and the _____ acting upon them.
Geology is the study of the ___ of which the Earth is made.
____ fern fossils have been found in Antarctica.
The weight of the top layers of rock ___ the bottom layers of rock.
Geologists are working to learn about the past ___ of Earth.
Geologist conduct studies that locate rocks which contain important ___.
Knowing what rocks are found below the soil can help people make ___ judgements about the uses of the resources of our planet.
Geologists work to understand the ____ of our planet.
Archaeopteryx Lithographica is thought to be the ___ between reptiles and birds.
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It looks weird when printed.
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When you hit the 'Arrange' button, our algorithm will try to arrange all your words on the grid, and will move words around to try to fit the most words.
This will get all the words on the grid about 90% of the time, depending on the word list. For the other 10%, you will get an alert explaining that the words that did not fit were added to the scratchpad.
It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
That said, different browsers print in slightly different ways, so you could try using 'print preview' using a different browser (or try the PDF button) to see if you like how that looks better.
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