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Daily Warm-Up Exercises1 Day 26 What are the three major types of rock? igneous, metamorphic, and sedimentary What's the main difference between the three.

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Presentation on theme: "Daily Warm-Up Exercises1 Day 26 What are the three major types of rock? igneous, metamorphic, and sedimentary What's the main difference between the three."— Presentation transcript:

1 Daily Warm-Up Exercises1 Day 26 What are the three major types of rock? igneous, metamorphic, and sedimentary What's the main difference between the three rock types? The main difference is in how they form

2 Compare Time Scales2 Contrasting Case Activity 4 Earth History, Investigation 6

3 Compare Time Scales3 Age of Earth Earth’s history is measured in millions of years. Earth was formed about 4,500 million years ago. How much is a million? How much is 4,500 million? 1,000 times 1,000 4,500 times 1,000 times 1,000 1,000 thousand 4,500 thousand thousand 4,500,000 thousand

4 Compare Time Scales 4 Human Life Humans first appeared about 200,000 years ago. How much is 200,000? 200 times 1, thousand How does our age compare with Earth’s? 4,500,000 thousand 200 thousand = 4,500, = 45,000 2 = 22,500 years 1 year

5 Compare Time Scales 5 Numeric Scale 1 - Table

6 TableTimeline Which part looks like it lasted longest? When did precambrian time begin? When did precambrian time end? How long did precambrian time last? When did the paleozoic era begin? When did paleozoic era end? How long did paleozoic era last? When did modern humans appear? Compare Time Scales6 Complete Column 1 Paleozoic Era 4,500 mya 570 mya 3930 million years 570 mya 245 mya 325 million years 200,000 years ago

7 Compare Time Scales7 Numeric Scale 2 - Timeline 4,500 million years ago (mya) Quaternary – Modern humans appear 200,000 years ago Tertiary – Dinosaurs become extinct Cretaceous – Rocky Mountains are formed Jurassic – Flowering plants appear Triassic – First dinosaurs Permian – Great Extinction Pennsylvanian – First reptiles Mississippian – First amphibians Devonian – First insects Silurian – First land animals Ordovician – First land plants Cambrian – First trilobites Earth is formed; water appears on Earth’s surface; earliest, bacteria-like life appears Cenozoic Today1.6 mya 66 mya 144 mya 208 mya 245 mya 286 mya 320 mya 360 mya 408 mya 438 mya 505 mya 570 mya MesozoicPaleozoic Precambrian Time

8 TableTimeline Which part looks like it lasted longest? When did precambrian time begin? When did precambrian time end? How long did precambrian time last? When did the paleozoic era begin? When did paleozoic era end? How long did paleozoic era last? When did modern humans appear? Compare Time Scales8 Complete Column 2 Paleozoic Era 4,500 mya 570 mya 3930 million years 570 mya 245 mya 325 million years 200,000 years ago Paleozoic Era 4,500 mya 570 mya 3930 million years 570 mya 245 mya 325 million years 200,000 years ago

9 Compare Time Scales9 Proportional Scale 1 - Football Field

10 Football FieldClock Which part looks like it lasted longest? When did precambrian time begin? When did precambrian time end? How long did precambrian time last? When did the paleozoic era begin? When did paleozoic era end? How long did paleozoic era last? When did modern humans appear? Compare Time Scales10 Complete Column 1 precambrian time 0 yards 87 yards 87 of 100 yards 87 yards 95 yards 8 of 100 yards yards

11 first land plants (9:39 pm) first land animals (9:46 pm) first amphibians (10:04 pm) first insects (9:52 pm) modern humans appear (seconds before midnight) Compare Time Scales11 Proportional Scale 2 - Clock pm pm pm am am am Precambrian Time (12:00 am - 9:00 pm) Earth is formed (midnight) START Today (midnight) END Mesozoic Era (10: :39 pm) MorningAfternoon earliest, bacteria-like life appears (5:20 am) water appears on Earth’s surface (2:40 am) Paleozoic Era (9: :42 pm) Ceno- zoic Era Precambrian Time (12:00 am - 9:00 pm) first trilobites (9:05 pm) dinosaurs become extinct (11:39 pm) Rocky Mountains are formed (11:14 pm) first reptiles (10:24 pm) Great Extinction (10:33 pm) flowering plants appear (11:12 pm) first dinosaurs (10:42 pm)

12 Football FieldClock Which part looks like it lasted longest? When did precambrian time begin? When did precambrian time end? How long did precambrian time last? When did the paleozoic era begin? When did paleozoic era end? How long did paleozoic era last? When did modern humans appear? Compare Time Scales12 Complete Column 2 precambrian time midnight 9:00 pm 21 of 24 hours 9:00 pm 10:42 pm less than 2 hours after 11:59 pm precambrian time 0 yards 87 yards 87 of 100 yards 87 yards 95 yards 8 of 100 yards yards

13 Compare Time Scales13 Compare Categories What can you learn about Earth’s history from the numeric scales but not from the proportional scales? That Earth was formed 4,500 million years ago. That it took thousands of millions of years for plants and animals to appear.

14 Compare Time Scales14 Compare Categories What can you learn from the proportional scales but not from the numeric scales? You can easily see how young the human race is compared to Earth. You can see how far along in Earth’s history different things happened. It’s obvious that precambrian time is longer than all three eras put together

15 Compare Time Scales15 Compare Categories Could you include proportional information in the table or timeline? Could you include numeric information in the clock or football field? Add the date to each event or time division. Make the size of each box show how long that section lasted.


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