Type
Crossword
Description

This crossword contains the following questions and answers:

earliest era of earth history, ending 570 million years ago Precambrian
a core sample that is typically removed from an ice sheet ice core
between the end of the Precambrian eon and the beginning of the Ordovician period. Cambrian
the state or process of a species, family, or larger group being or becoming extinct. "the extinction of the great auk" extinction
a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers Law of superposition
a system of chronological dating that relates geological strata to time Geological time scale
any method of determining the age of earth materials or objects of organic origin based on measurement of short-lived radioactive elements radioactive dating
a fossil that is useful for dating and correlating the strata in which it is found Index fossil
process of determining an age on a specified chronology in archaeology and geology Absolute dating
the remains or impression of a prehistoric organism preserved in petrified form fossil
the science of determining the relative order of past events relative dating
the outermost layer of a planet crust

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SUPER SCIENCE WORDSEARCH unit 7---- (can you find all the words?)

Type
Word Search
Description

This word search contains the following answers:

absolute dating
cast
decay element
extinct
extrusion
fossil record
geologic column
geologic time
half-life
ice core
index fossil
isotope
mold
petrified
radioactivity
radiometric dating
strata
trance fossil
unconformity
uniformitarianism

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Earth History Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

relating or denoting to the most recent era Cenozoic
Era comprising of the Triassic, Jurassic, and Cretaceous periods Mesozoic
Largest extinction in Earth's history Permian
Prehistoric period during which stone was widely used StoneAge
Period in Earth's history Eon
A major division of geologic time era
The process of change that produces new life forms over time evolution
All the geologic time before the start of the Cambrian Period in the Paleozoic Era. Precambrian
period characterized by the greatest development, rise of modern insects and flowering plants cretaceous
many sea reptiles;early large dinosaurs; later,flying reptiles, and earliest known birds jurassic
Diverse marine life, including vertebrates; vascular plants Ordovician
Numerous fishes, other sea life; many plants, first trees; wingless insects Devonian
Formation of oceans, atmosphere, and continents; bacteria Archaean
Oldest era; organisms developed hard parts Paleozoic
oldest and longest geologic time period precambrian
subdivisions of eras periods
an extinct terrestrial reptile of the Mesozoic era dinosaur
a cold-blooded vertebrate including snakes and lizards reptile
science of the history of the earth as recorded in rocks geology
record of earths history geologic time scale

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Geologic Time and Earth's History Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

A time when many species such as humans came to be. CenozoicEra
A global extinction that causes at least 80% of a species to die. K-T Extinction
A tool used to relate geological events to time. Geologists often use this. Geologic Time Scale
The earliest period of Earth's history. Precambrian Time
The largest section of geological time. Eon
The era when dinosaurs were alive. Mesozoic Era
A span of time defined by large events. Era
One of the subdivisions on the geological time scale. Also a punctuation mark. Period
The second smallest division in geologic time. Epoch
The extinction of dinosaurs happened within this era. Paleozoic Era
Measurement of age in exact years. Absolute age
The isotope that undergoes radioactive decay in a nuclear reaction. Parent Isotope
Unchanged fossil remains from extinct or dead animals. Original Remains
A buried surface seperating two rock masses of different ages. Uncomformity
The product atom formed during radioactive decay in a nuclear reaction. Daughter Atom
A technique used to date materials such as rocks or carbon. Radioactive dating
States that the oldest rocks will be at the bottom and will have formed first. Law of Superposition
Rings on a tree trunk representing a single year's growth with each line. tree rings
The remains or impression of a prehistoric organism. Fossil
The age of something in relation to something else. Relative Age
A fossil that is used for dating and correlating the strata in which it is found. Index fossil
A fossil of a footprint rather than the animal itself. trace fossil
A core sample typically removed from an ice sheet. Ice Cores
A fossil found in rock that was created long after the animal of it died. Rock Fossil
the time taken for a radioactive isotope to fall to half of its original value. Half-life

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Earth History Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

Which period ended 570 million years ago? Precambrian
What was the first geological period in the Paleozoic Era Cambrian Period
which scientific law says that the youngest of rocks layer is on top and the oldest is n the botom superposition
which method to determine the age of earth materials uses radioactive elements Radioactive dating
the determination of the age of an object with reference to a specific time scale is Absolute dating
The arrangement of artifacts to determine the age of that object Relative dating
the largest division of geologic time Eon
a period of time marked by a specific Characteristic Era
a point of time distinguished by a particular event Epoch
A large specified portion of time Period
a molten fluid rock that comes out of a volcano Lava
A molten material beneath the earths crust Magma
A vent in the earths crust through which lava Volcano
The two sub-layers of the earth's crust that move and float Tectonic plate
the surface of the earth is broken up into ___________ Plates
a planar fracture Fault
the study of earth is ____________ Geology
the process of witch the surface of the earth is being eroded Erosion
the chemical processes that cause exposed rock to decompose Weathering
organic matter deposited by water, sediment
the state of being deposited or precipitated Deposition
lift up, raise or elevate. Uplift
a process in which new ocean floor is created Seafloor spreading
any of several seismically active submarine mountain Midocean ridge
Rock that has formed through the deposition of sediment Sedimentary rock
Rocks formed by the solidifying of molten materials. Igneous rock
Rock that was once one kind of rock but has changed to another under the influence of heat Metamorphicrock
a process by which rocks are created Rock cycle
the outer layer of the earth Crust
an remaining of a living thing as a skeleton or imprint Fossil
a widely distributed fossil index fossil

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Geologic Time and Rock Layer Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

A body between to igneous rocks without reaching the surface. Intrusions
To elevate a piece of land. Uplift
The relative order of past events. Relative Dating
To move in a sloping position. Tilting
A theory that describes a challenging concept about the nature and behavior Superposition
A fossil that is useful for dating Index Fossil
Rocks that formed from lava on the surface of the earth. Extrusions
A method of dating geological rocks or fossils. Radiometric Dating.
A surface of contact between two groups of unconformable strata. Unconformity
when one or a stack of originally flat and planar surfaces, such as sedimentary strata, are bent or curved Folding
the process of determining an age on a specified time scale in archaeology and geology. Absolute Dating
The theory that changes in the earth's crust during geological history have resulted from the action of continuous and uniform processes. Uniformitarianism
A rock layer that is split due to this. Faulting
The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. Fossil
A rock that has formed from sediment deposited by water or air. Sedimentary
The process by which soil and rock particles are worn away. Erosion

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Earth's History Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

The central or innermost portion of the Earth. core
A large, bowl-shaped cavity in the ground or on the surface of a planet. crater
The outermost layer of the Earth. crust
Materials or substances such as minerals, forests, water, and fertile land that occur in nature and can be used for economic gain. natural resources
The theory that the solar ans stellar systems were developed from a primeval nebula. nebular hypothesis
A length or portion of time. period
Of, relating to, or denoting the period before written records. prehistoric
Belonging to the very distant past and no longer in existence. ancient
Any of the pieces of hard, whitish tissue making up the skeleton in humans and other vertebrates. bone
A combustible black or dark brown rock consisting mainly of carbonized plant matter, found mainly in underground deposits and widely used as fuel. coal
The gradual movement of the continents across the earth's surface through geological time. continental drift
(of a species, family, or other larger group) having no living members. extinct
A natural fuel such as coal or gas, formed in the geological past from the remains of living organisms. fossil fuels
Any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere. geosphere
The rigid outer part of the earth, consisting of the crust and upper mantle. lithosphere
A layer of natural material. rock layer
A supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained. theory
The action or process of adapting or being adapted. adaptaion
The variability among living organisms from all sources. biological diversity
(of organic matter) rot or decompose through the action of bacteria and fungi. decay
An amount or layer of a substance that gradually develops in a particular place. deposit
A fossil reptile of the Mesozoic era, often reaching an enormous size. dinosaur
The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth. evolution
Develop gradually, especially from a simple to a more complex form. evolve
The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. fossil
The science that deals with the earth's physical structure and substance, its history, and the processes that act on it. geology
The process whereby organisms better adapted to their environment tend to survive and produce more offspring. natural selection
A process for determining the age of an object by measuring the amount of a given radioactive material it contains. radioactive dating
The order in which sedimentary strata are superposed one above another. superposition
An element, feature, or factor that is liable to vary or change. variable

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Geology Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

the earliest 4.06 billion years of Earth's history and before the current Phanerozoic Eon Precambrian
lasted about 53 million years and marked a dramatic burst of evolutionary changes in life on Earth Cambrian period
a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it. Law of Superposition
technique used to date materials such as rocks or carbon Radioactive dating
determining an age on a specified chronology in archaeology and geology Absolute dating
the science of determining the relative order of past events Relative dating
an indefinite and very long period of time Eon
The Cambrian Period is considered a(n) ____. Era
a division of time that is a subdivision of a period and is itself subdivided into ages, corresponding to a series in chronostratigraphy Epoch
a length or portion of time Period
hot molten lava
mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth Magma
a rupture in the crust of a planetary-mass object Volcano
scientific theory that describes the large-scale motion of Earth's lithosphere Tectonic plate
one of the very large sheets of rock that form the surface of the Earth plate
planar fracture or discontinuity in a volume of rock Fault
the science that deals with the earth's physical structure and substance, its history, and the processes that act on it. Geology
the action of surface processes that remove soil, rock, or dissolved material from one location on the Earth's crust, then transport it away to another location. Erosion

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Natural Selection Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

the period between the birth of one generation and the birth of the next generation generation time
the formation of new species as a result of evolution speciation
the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do natural selection
a characteristic that improves an individuals ability to survive and reproduce in a particular environment adaptation
a group of organisms that are closely related and can mate to produce fertile offsring Species
the process in which inherited characteristics within a population change over generations such that new species sometimes arise Evolution
the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock fossil
a historical sequence of life indicated by fossils found in layers of the earths crust fossil record
a genetically determined characteristic trait
the human practice of breeding animals or plants that have certain desired traits selective breeding
any method of determining whether an event or object is older or younger than other events or object relative dating
any method of measuring the age of an object or event in years absolute dating
the theory that explains how large pieces of the Earths outermost layer, called tectonic plates, move and chage shape plates tectonics

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Earth History Crossword

Type
Crossword
Description

This crossword contains the following questions and answers:

A disturbance in one or more layers of the Earth's crust Uncomformity
A process that breaks rocks down Weathering
Natural differences VARIATION
A group of an organism tha share most of the same characteristics Species
Weathered rock and other materials deposited by water, wind or ice sediment
A taxonomic group made up of related classes Phylum
Rock that forms under extreme heat, pressure or both Metamorphic Rock
Melted rock Magma
Rock that is formed from magma that has cooled and hardened Igneous rock
The study of Earth's history, processes, and structures Geology
The evidence of an organism that lived in past ages Fossil
No longer found on Earth Extinct
How an organism changes over time Evolution
A division of an eon on the geologic time scale Era
The shortest division of the geologic time scale epoch
The longest unit on the geologic time scale eon

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Geologic Time Word Search

Type
Word Search
Description

This word search contains the following answers:

EXTINCTION
ICE AGE
MARINE LIFE
ANTHROPODS
FAUNA
FLORA
VERTEBRATES
CLAY
LIMESTONE
PANGEA
GINGKO
FERN
DINOSAUR
MAMMOTH
CAVE LION
NEOGENE
PALEOGENE
CENOZOIC
CRETACEOUS
JURASSIC
TRIASSIC
MESOZOIC
PERMIAN
CARBONIFEROUS
DEVONIAN
SILURIAN
ORDOVICIAN
CAMBRIAN
PALEOZOIC
HADEAN
ARCHEAN
PROTEROZOIC
PRECAMBRIAN
GEOLOGIC

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