Type
Crossword
Description

what is a remains of an organism that lived long ago and is preserved in some way? fossil
a scientist who studies fossils and organisms that lived long ago? paleontologist
a mark or figure impressed or printed on something imprints
formed when sediment fills the inside or covers the outside of a dead organism molds
preserves the impression of the hard part of an organism casts
insect fossils preserved in hardened tree sap called amber
are formed by sediment that is deposited over time, usually as layers at the bottom of lakes and oceans sedimentary rock
is a kind of fossil formed when trees that died millions of years ago fell and became covered in mud and sand petrified wood
when the last existing member dies extinct
are a diverse group of animals that first appeared during the Triassic dinosaurs

Fossils Crossword

Type
Crossword
Description

An imprint made by sediment filling a mold and creating the same shape as the once living organism. cast
Fossils of the actual animal or animal part preserved in ice, amber, or tar. True Form fossils
Formed when an organism dies, breaks down, and only leaves a thin layer of carbon. carbon film fossil
Substances such as coal, natural gas, and oil formed from the remains of once living organism. Fossil fuels
material that is replaced quickly in nature, alternative source of energy. Renewable resources
The preserved remains or traces of animals, plants, and other organisms of long ago. fossils
to turn into stone or a stony substance. Petrify
Rocks made from material that sinks to the bottom of a liquid such as a lake, pond, or ocean. sedimentary
Person who studdies fossils. Paleontologist
Impressions left behind by an oganism; they record the movements and behaviors. trace fossils
an imprint made by the outside of a dead plant or animal when water washes the remains out of the rock. mold
Hardened tree sap yellow to brown in color, that is often a source of insect fossils. amber
A fossil made by a print or an impression. imprint
An organism no longer alive on Earth. extinct

Fossil Word Search

Type
Word Search
Description

remains
millions
bones
animals
plants
rock
dinosaur
preserved
wooly mammoth
petrified wood
amber
paleontologist
sedimentary rock
extinct
imprint
fossil
cast
mold

How fossils are made Crossword

Type
Crossword
Description

harden tree sap amber
a fossil cephalopod that is an important index fossil of the Triassic period ammonites
growing or living in water aquatic
rot decomposition of proteins by enzymes of aerobic bacteria decay
turned into ice frozen
leave an inprint on something impression
sedimentary rock composed of calcite limestone
the impression of an organism in a rock mold
preserved;shriveled up mummified
a scientist who studies fossils paleontologist
the scientific study of fossils paleontology
made of stone petrified
a person or thing take the place of another replacement
sedimentary,siliceous,clastic with sandsize particles sandstone
rocks formed from the compaction or cementation of sediments sedimmmentary rocks
a sedimentary rock formed by the deposition of successive layers of clay shale
the fossil of a footprint or burrow tracefossil
the hard shell of an arthropod exoskeleton
fossilized poop coprolite
a fossilized imprint of an animals foot footprint

Earth History #1 Crossword

Type
Crossword
Description

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

CLUES TO EARTHS PAST Crossword

Type
Crossword
Description

Remains, imprints, or traces of prehistoric organisms. Fossil
Remains of species that existed on Earth for a short period of time. Index Fossil
The time taken for any specified property to decrease by half. Half-Life
Living thing such as animal, plant and human. Organism
Somethings age, to the comparison to the ages of other things. Relative Age
A thin film of carbon residue is left, forming a silhouette of the original organism Carbon Films
A hard part of something being dissolved and leaving behind a cavity. Mold
Gaps in rock sequences are called _____________. Unconformities
The solid, nonmetallic mineral matter of which rocks are made of. Stone
The age, in years, of a rock or other object. Absolute Age
A method of dating geological or archeological specimens by determining the relative proportions of particular radioactive isotopes present in a sample. Radiometric Dating
A fossil of a footprint, trail or burrow. Trace Fossil
Belonging to or forming the outer surface or structure of something. External
Sometimes conditions allow ________ _________ of organisms to be preserved for millions of years. Original Remains
A scientist who studies fossils. Paleontologist
Plant matter accumulating, over millions of years, these deposits become completely carbonized, forming ____. Coal
The process in which something is being broken down. Radioactive Decay
A person, animal, or group living in a place or environment. Inhabited
Rock formed when sediments are cemented and compacted. Sedimentary Rock
An expert in or student of geology. Geologist

Fossils Crossword

Type
Crossword
Description

imprint or remains of plants, or animals that once were alive and lived a very long time ago fossils
gone forever, all of one kind of a plant or animal dies extinct
a fossil made inside a mold when minerals seeped in and hardens into the shapes of the mold  cast fossil
a fossil of an organism that left an empty space in the rock the shape of the once living organism mold fossil
a fossil that are the remains of the activity of an animal, such as preserved track ways, footprints, fossilized egg shells, and nests  trace fossil
a fossil in which the organic remains have been replaced by minerals in the slow process of being replaced with stone pertified fossil
sticky juice from a tree sap
hardened tree sap, often the source of insect fossils and is usually yellow in color resin fossil
a scientist who studies fossils paleontologists
to keep something as it was preserved

The Theory of Evolution and Natural Selection Crossword

Type
Crossword
Description

any preserved evidence of life from a past geological age, such as the impressions and remains of organisms fossil
an inherited trait which helps an organism survive and reproduce that is maintained and evolved by natural selection adaptation
naturally occurring differences within a species variations
when humans select plants and animals for breeding based upon desired traits selective breeding
a form of an inherited characteristic trait
learned trait, not passed on to offspring acquired trait
naturalist who developed the Theory of Evolution Darwin
islands that Darwin traveled to Galapagos
Darwin studied the differences between the ______ of finches beaks
name of Darwin's ship HMSBeagle
A _______ is all of the individuals of a species living in a an area at the same time population
the process by which populations change over time evolution
a change in genetic material mutation
when an organism makes more offspring than the environment can handle overproduction
when all members of a species have died extinction
evidence that organisms have changed over time can be found in _______, ice or sedimentary rock amber
most recent species from which two different species have evolved common ancestor
the wing of a bat is similar in structure to the _____ of a human arm
genetic information is stored in an organism's _____ DNA
a scientist who studies fossils paleontologist

EVIDENCE OF EVOLUTION Crossword

Type
Crossword
Description

the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock. Fossils
make (something) suitable for a new use or purpose; modify. Adapt
a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. Species
the process of developing or being developed. Development
the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries. Geography
having the same or a similar relation; corresponding, as in relative position or structure. HomologousStructure
in genealogy, any person to whom two or more persons claim descent; also, the most recent ancestral form or species from which two different species evolved. CommonAncestor
structures are similar or resembling in certain respects, in function or in appearance but not in evolutionary origin or developmental origin. AnalogousStructure
relying on or derived from observation or experiment. Empirical
an individual animal, plant, or single-celled life form. Organism
deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information. DNA
a distinctive attribute or aspect of something. Features
any of the pieces of hard, whitish tissue making up the skeleton in humans and other vertebrates. Bones
a period of ten years. Decades
the arrangement of and relations between the parts or elements of something complex. Structure
an anatomical feature that no longer seems to have a purpose in the current form of an organism of the given species. VestigialStructure
the branch of biology and medicine concerned with the study of embryos and their development. Embryology
The investigation and comparison of the structures of different organisms. ComparativeAnatomy
an English naturalist and geologist, best known for his contributions to the science of evolution. CharlesDarwin
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

Geologic Time and Rock Layer Crossword

Type
Crossword
Description

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

Fossils Crossword

Type
Crossword
Description

The preserved remains of a plant or animal fossil
Fossils give scientist _______ about life on our planet. clues
Fossils have been found on all ______ continents
A person who studies fossils paleontologist
To find a fossil, you have to ____ deep into the Earth dig
There are ___ types of fossils three
This type of fossil comes from an indent of an organism in rock after the organism has died mold
_____ fossils occur when mold fossils are filled in with minerals that harden over time. cast
This type of fossil is created by the walking or running of an organism. imprint
Sometimes fossils harden in this tree sap
Fossils take many _____ to form. years
most fossils are found in this type of rock sedimentary