Save Status:
or to save your progress. The page will not refresh.
Answer Key:
Edit a Copy:
Make Your Own:
Crossword Word Search Worksheet
Rate This Puzzle:
Log in or sign up to rate this puzzle.

Earth Science 1

name: ______________________________
The second most recent era on the geologic time scale, spanning from 245 m.y.a. to 65 m.y.a; often called the "Age of Dinosaurs."
Divisions of geologic time that are longer than an epoch and included in an era.
A theory that says slight differences in initial conditions, when amplified, create very different trajectories.
The study of rocks, fossil organisms, and related remains in geologic history.
A timeline that describes the timing and relationships of events in Earth's history.
The outer part of Earth's surface; from 5 to 100 kilometers thick.
The geologic era from 570 m.y.a. to 245 m.y.a. that is characterized by an explosion of life.
Large divisions of geologic time usually shorter than an eon.
The line at zero degrees latitude. All other latitude lines are measured from this starting point.
The geologic era that spans from the formation of Earth around 4.5 b.y.a. to about 544 m.y.a.
Divisions of geologic time less than a period and greater than an age.
The most recent era on the geologic time scale.
A condition or factor which is affected by another factor or factors.
The preserved remains or traces of organisms that lived in the geologic past.
A group in a lab experiment that is not exposed to the tested variable.
A design on a map that shows direction.
A condition in which all forces are balanced by others, resulting in a stable system.
A cause-and-effect relationship in which one variable controls the changes in another variable.
The amount of mass per unit volume.
Units of geologic time equal to one billion years.