1. Copyright © 2011, InteractiveScienceLessons.com This represents the life of our earth on the scale of a 24-hour clock Earth is an estimated 4.567 billion years old An exact order of events and their timing is not possible. These numbers are based on what we know right now. On this 24-hour scale: 1 hour=190 m.y. every minute=3 m.y. every second=53 t.y. 24/0 12 pm 6 am 18 -6pm 3 am 9 am 15 -3pm 21 -9pm 1 2 4 5 7 8 10 1113 -1 14 -2 16 -4 17 -5 19 -7 20 -8 22 -10 23 -11 1b. 2b. 3b. 4b.

2. Copyright © 2011, InteractiveScienceLessons.com This represents the life of our earth on the scale of a 24-hour clock Earth is an estimated 4.567 billion years old An exact order of events and their timing is not possible. These numbers are based on what we know right now. On this 24-hour scale: 1 hour=190 m.y. every minute=3 m.y. every second=53 t.y. 24/0 12 pm 6 am 18 -6pm 3 am 9 am 15 -3pm 21 -9pm 1 2 4 5 7 8 10 1113 -1 14 -2 16 -4 17 -5 19 -7 20 -8 22 -10 23 -11 1b. 2b. 3b. 4b. 00:00 rock collects to form earth

3. Copyright © 2011, InteractiveScienceLessons.com Billons of years Event Time (Divide yrs .190) Convert minutes Hr : Min.03 “ Theia ” collision, debris forms moon, earth tilts 23 ½  :.15Crust is cooling :.667Asteroid bombardment : Hundredths of an hour Hours.03÷.190= 0.1600.16x 60=9.6 =10 10

4. Copyright © 2011, InteractiveScienceLessons.com This represents the life of our earth on the scale of a 24-hour clock Earth is an estimated 4.567 billion years old An exact order of events and their timing is not possible. These numbers are based on what we know right now. On this 24-hour scale: 1 hour=190 m.y. every minute=3 m.y. every second=53 t.y. 24/0 12 pm 6 am 18 -6pm 3 am 9 am 15 -3pm 21 -9pm 1 2 4 5 7 8 10 1113 -1 14 -2 16 -4 17 -5 19 -7 20 -8 22 -10 23 -11 1b. 2b. 3b. 4b. 00:00 rock collects to form earth 00:10 Theia collison, moon, tilt

5. Copyright © 2011, InteractiveScienceLessons.com Billons of years Event Time (Divide yrs .190) Convert minutes Hr : Min.03 “ Theia ” collision, debris forms moon, earth tilts 23 ½  :.15Crust is cooling :.667Asteroid bombardment :.03÷.190= 0.1600.16x 60=9.6 =10 10.15÷.190= 0.790047.79x 60=47.4

6. Copyright © 2011, InteractiveScienceLessons.com This represents the life of our earth on the scale of a 24-hour clock Earth is an estimated 4.567 billion years old An exact order of events and their timing is not possible. These numbers are based on what we know right now. On this 24-hour scale: 1 hour=190 m.y. every minute=3 m.y. every second=53 t.y. 24/0 12 pm 6 am 18 -6pm 3 am 9 am 15 -3pm 21 -9pm 1 2 4 5 7 8 10 1113 -1 14 -2 16 -4 17 -5 19 -7 20 -8 22 -10 23 -11 1b. 2b. 3b. 4b. 00:00 rock collects to form earth 00:10 Theia collison, moon, tilt 00:47 crust is cooling

7. Copyright © 2011, InteractiveScienceLessons.com Billons of years Event Time (Divide yrs .190) Convert minutes Hr : Min.03 “ Theia ” collision, debris forms moon, earth tilts 23 ½  :.15Crust is cooling :.667Asteroid bombardment :.03÷.190= 0.1600.16x 60=9.6 =10 10.15÷.190= 0.7900.79x 60=47.4 47.667÷.190= 3.5103.51x 60=30.6 31

8. Copyright © 2011, InteractiveScienceLessons.com This represents the life of our earth on the scale of a 24-hour clock Earth is an estimated 4.567 billion years old An exact order of events and their timing is not possible. These numbers are based on what we know right now. On this 24-hour scale: 1 hour=190 m.y. every minute=3 m.y. every second=53 t.y. 24/0 12 pm 6 am 18 -6pm 3 am 9 am 15 -3pm 21 -9pm 1 2 4 5 7 8 10 1113 -1 14 -2 16 -4 17 -5 19 -7 20 -8 22 -10 23 -11 1b. 2b. 3b. 4b. 00:00 rock collects to form earth 00:10 Theia collison, moon, tilt 3:31 asteroid bombardment 3:57 rain, oceans form, intense volcanic activity 10:21 Prokaryotes-first real cells 16:10 First supercontinent- “Columbia” 18:46 photosynthesis 19:18 animals 20:21 plants 21:14 fish 22:25 mammals 22:28 Pangaea 22:50 dinosaurs 23:05 Pangaea breaks up 23:15pm birds 23:41 6 mile-wide asteroid strikes Yucatan Peninsula. Large animals extinct 23:59 civilization 00:47 crust is cooling

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