DOWN 1 The era when the earliest life forms appeared 2 Longest segments of the geologic time 4 A type of fossil, organic material is converted into stone 11 6 Subdivisions of a geologic period 12 7 A scientist who studies the history of life on Earth through the fossil record 10 What happened to the dinosaurs that marked of the cretaceous period, about 66 million years 11 Subdivision of a geologic era

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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PLEASE DO ANSWER THE DOWN

A. Crossword on Earth's Record of Life
Directions: Use the clues to answer the crossword puzzle. The words in the puzzle are
terms you will encounter in the lesson on the history of life on Earth.
ACROSS
3
_fossil, a kind of fossil that is the marking left by an animal, for example, a footprint
dating, technique used to determine the age of fossils by comparing them with other
fossils in different layers of rock
8 Rocks made of compressed particles
9 Elements that give off high-energy particles
1
12
dating, a technique used to approximate how rocks formed years
ago; used to infer how old those rocks are
2
13 Physical evidence of a living thing that lived
scientists use to study the past
3
a long ago that
4
EDUCA
OF
5
MENT
6
8
NCE!
DOWN
1 The era when the earliest life forms appeared
2 Longest segments of the geologic time
4 A type of fossil,
organic material is
converted into stone
10
11
6 Subdivisions of a
geologic period
12
7 A scientist who studies
the history of life on
Earth through the fossil
record
13
10 What happened to the dinosaurs that marked the end
of the cretaceous period, about 66 million years ago
11 Subdivision of a geologic era
Transcribed Image Text:A. Crossword on Earth's Record of Life Directions: Use the clues to answer the crossword puzzle. The words in the puzzle are terms you will encounter in the lesson on the history of life on Earth. ACROSS 3 _fossil, a kind of fossil that is the marking left by an animal, for example, a footprint dating, technique used to determine the age of fossils by comparing them with other fossils in different layers of rock 8 Rocks made of compressed particles 9 Elements that give off high-energy particles 1 12 dating, a technique used to approximate how rocks formed years ago; used to infer how old those rocks are 2 13 Physical evidence of a living thing that lived scientists use to study the past 3 a long ago that 4 EDUCA OF 5 MENT 6 8 NCE! DOWN 1 The era when the earliest life forms appeared 2 Longest segments of the geologic time 4 A type of fossil, organic material is converted into stone 10 11 6 Subdivisions of a geologic period 12 7 A scientist who studies the history of life on Earth through the fossil record 13 10 What happened to the dinosaurs that marked the end of the cretaceous period, about 66 million years ago 11 Subdivision of a geologic era
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