Type
Word Search
Description

endangered
meteorite
volcanoes
dust
skeletons
organisms
scientist
plant
animal
bottom
rock
related
extinct
extinction
mass
classify
fossil
embryo
sunlight
age

Geologic Time and Earth's History Crossword

Type
Crossword
Description

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

fossils Crossword puzzle

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

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

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

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

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

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

Life Science Crossword

Type
Crossword
Description

All living and nonliving things that exist and interact in one place. Ecosystem
The remains of plants and animals. Organic Matter
All the organisms that live in the same ecosystem and interact with each other. Community
All the organisms of the same kind that live in the ecosystems. Population
An organism that eats living things to get energy. Consumer
An animal such as an insect or bird, that helps plants make seeds by moving pollen from one part of the plant to another. Pollinator
Any organism that makes its own food. Producer
The process of making more of one's own kind. Reproduction
The scattering or carrying away of seeds from the plant that produced them. Seed Dispersal
An animal that only eats other animals. Carnivore
An animal that only eats plants. Herbivore
An animal that eats both plants and other animals. Omnivore
The process plants use to make food. Photosynthesis
An animal that hunts other animals for food. Predator
An animal that is hunted for food by a predator. Prey
To break down into simpler materials. Decay
An orgaism that breaks down the remains of dead organisms. Decomposer
A tiny living thing that can only be seen with a microscope. Microorganism
The process of breaking down materials into a different form for a new use. Recycling
An animal that feeds on the remains of dead animals. Scavenger
A physical feature or behavior that helps an organism survive in its habitat. Adaptation
The coloring, marking, or other physical appearance of an animal that helps it blend in with its surroundings. Camoflauge
The place where an organism lives. Habitat
To go into deep sleep during which an animal uses very little energy and usually does not need to eat. Hibernate
An adaptation that allows an animal to protect itself by looking like another kind of animal or like a plant. Mimicry
The role a plant or an animal plays in its habitat. Niche
A group of organisms that produce organisms of one kind. Species
No longer living Extinct
To move to another region when seasons change and food supplies become scarce. Migrate
A major division of geologic time defined by events that took place during that time. Era
The preserved traces and remains of an organism that lived long ago Fossil
A scientist who studies fossils. Paleontologist

Animal Science Careers Crossword

Type
Crossword
Description

A specialist in the area of genetics Animal Geneticist
A specialist dealing with the formation, structure and development of embryos Embryologist
A specialist in the science of dealing with animals zoologist
A specialist in the science of plants Botanist
A spealist in the area of crop science Agronomist
A specialist in the area of animal anatomy Anatomist
A specialist in the area of animal physiology Physiologist
Specialist in the area dealing with chemicals Chemist
Specialist in the area of feeds and feeding Nutritionist
Specialist in the study of disease origins pathologist
Specialist in the study of parasites Parasitologist
Specialist in the study of insects Entomologist
Specialist in the study of Bacteria bacteriologist
Specialist in the production, use and consumption of products Economist
Specialist in the area of animal behavior ethologist
Specialist in the area of organisims and how they react to their environment Ecologist
Specialist in Public relations in agriculture Communications
Specialist in the area of animal health veterinarian
Specialist in laws affeciting agriculture Lawyer
Specialist in government relations Political Scientist

Natural Selection Crossword

Type
Crossword
Description

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