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1. Using the information from Fig. 10-6, answer the questions below. a) How old is the earth? c) b) What percentage of the earth's age does each era represent? What is the name of the era in which we live? Draw a line 25 cm long on a piece of paper. Divide it into eras based on the percentages calculated in question 1b. 2. a) b) Using the chart from Fig. 10-6, label the main geological events which occurred in each era along the line.

1. Using the information from Fig. 10-6, answer the questions below. a) How old is the earth? c) b) What percentage of the earth's age does each era represent? What is the name of the era in which we live? Draw a line 25 cm long on a piece of paper. Divide it into eras based on the percentages calculated in question 1b. 2. a) b) Using the chart from Fig. 10-6, label the main geological events which occurred in each era along the line.

Applications and Investigations in Earth Science (9th Edition)
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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I need help for only 1 b, c, and 2a, please and if you wish you could do all.

note * in the question 1c, it is asking about ontario, canada's era*

1. Using the information from Fig. 10-6, answer the questions below. a) How old is the earth? c) b) What percentage of the earth's age does each era represent? What is the name of the era in which we live? Draw a line 25 cm long on a piece of paper. Divide it into eras based on the percentages calculated in question 1b. 2. a) b) Using the chart from Fig. 10-6, label the main geological events which occurred in each era along the line.
Transcribed Image Text:1. Using the information from Fig. 10-6, answer the questions below. a) How old is the earth? c) b) What percentage of the earth's age does each era represent? What is the name of the era in which we live? Draw a line 25 cm long on a piece of paper. Divide it into eras based on the percentages calculated in question 1b. 2. a) b) Using the chart from Fig. 10-6, label the main geological events which occurred in each era along the line.
Eras Cenozoic (recent life) Mesozoic (middle life) Paleozoic (ancient life) Time Period (millions of years ago) Major Geological Events Began Ended 66 245 570 Precambrian 4600 (earliest life) 66 245 570 ice sheets cover much of North America continents take on their present shape • formation of the Rocky Mountains completed formation of Rocky Mountains begins • Innuitian Mountains formed • shallow seas in the interior of North America at various times • periods when large parts of North America are covered by shallow seas • Appalachians formed Precambrian shields, such as the Canadian Shield, Brazilian Shield, African Shield, and Australian Shield are formed building and, in some cases, mass extinctions. Major Biological Events • human beings develop age of mammals • modern forms of life evolve age of reptiles, such as dinosaurs • first flowering plants • first birds and mammals age of amphibians and fish • first insects • large swamps-coal formed from this vegetation • first plants and animals appear on land • first multi-celled organisms • first single-celled organisms
Transcribed Image Text:Eras Cenozoic (recent life) Mesozoic (middle life) Paleozoic (ancient life) Time Period (millions of years ago) Major Geological Events Began Ended 66 245 570 Precambrian 4600 (earliest life) 66 245 570 ice sheets cover much of North America continents take on their present shape • formation of the Rocky Mountains completed formation of Rocky Mountains begins • Innuitian Mountains formed • shallow seas in the interior of North America at various times • periods when large parts of North America are covered by shallow seas • Appalachians formed Precambrian shields, such as the Canadian Shield, Brazilian Shield, African Shield, and Australian Shield are formed building and, in some cases, mass extinctions. Major Biological Events • human beings develop age of mammals • modern forms of life evolve age of reptiles, such as dinosaurs • first flowering plants • first birds and mammals age of amphibians and fish • first insects • large swamps-coal formed from this vegetation • first plants and animals appear on land • first multi-celled organisms • first single-celled organisms
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