Wednesday October 15, 2014

LTLT:  I can identify and analyze data to describe how major geologic events have changed  organisms over time. LT: I can explain the geologic timeline of Earth’s history Criteria for Success: I can identify major events in Earth’s history I can create a scaled geologic timeline Agenda: Personal Timeline Planning Mini Lesson Clapping the Earth Toilet Paper Timeline Calculations and Events Debrief Exit Ticket   Warm up: What do you know about time? How do we organize it? What are different measurements of time? Review LTLT, LT & C.S. Personal Timeline Planning 1. Make a list of 7 important events that have occurred in your life, on the planning sheet. 1. 2. 3. 4. 5. 6. 7. 2. Place them in chronological order 3. Create a scaled timeline   Mini Lesson:                          How do you think your timeline connects to the geologic timeline? The purpose of a geologic timeline is to give a visual representation of the  relative time between Earth’s events. We know the Earth is about 4.6 billion years old,  based on geologic evidence, and during this time some MAJOR events occurred. Timelines also help us scale time, into manageable chunks, and to organize events, according to  when they happened.    Part 1: Clapping the Earth An easy way to scale time is to represent each year as a second, and it takes about 1 sec. to clap. *call on a kid, _______, how old are you? 12 years = 12 claps. Let’s clap out their age. How old is the Earth?? *4.6 billion years old. *how long would it take us to clap out Earth’s age?? Hand out Clapping Out History **higher level kids can do the calculations if they wish Part 2:  Toilet paper timeline So we figured out that it would take us a long time to clap out Earth’s history, if we were to visually create a timeline,  how long would it be? **Show Alex’s timeline… Hand out Geologic Timeline worksheet Let’s use TP. There are 396 sheets per roll. First, we need to do some math… *where should we place each event? ----------------- Part 3: Calculations & Event Placement on TP Timeline Now you did your calculations, we’re going to 1. Unroll the TP 2.Place each card on the TP timeline, according to how many sheets from Earth’s start or origin   Clapping out Earth’s History If we SCALE time into 1 year = 1 second then…. If _______________ is ________ years old, then we need to clap for _________________ seconds. If ______________ is ___________ years old, then we need to clap of _______________ seconds. ---------------------------- If we represent each year of Earth’s History as one second, then 146 years are needed to represent 4.6 billion seconds. Q: How many seconds are there in one year? **You can calculate it out yourself if you’d like *there are 60 seconds/minute *if 60 second/minute x 60 minutes/hour = 3600 seconds/hour *3600 seconds/hour x 24 hours/day – 86,400 seconds/day *86,400 seconds/day x 365.25 days/year      = 31,557,600   seconds/year or 3.16 x 107 seconds/year -How long would it take to clap out 4.6 billion years or 4,600,000,000 seconds? **You can calculate it out yourself if you’d like *4,600,000,000 seconds/31,600,000 seconds/year     = 145.6 years!!   LT: I can explain the geologic timeline of Earth’s history Timeline Planning Page (paste this into your journal) 1.) Make a list of 7 important events from your life: 1. 2. 3. 4. 5. 6. 7. 2.) Now place these special events in chronological order: (Put the oldest one at the beginning, and the most recent at the end.) 1. 2. 3. 4. 5. 6. 7. 3.) Use a long piece of paper to place your life events on a timeline.  Create a scale and use a ruler to make your timeline as accurate as possible.  Label each event so that we can learn about your life. Ex:  1 inch = 1 year *if you finish all this before the rest of the class, feel free to decorate your timeline with pictures from each event. LT: I can explain the geologic timeline of Earth’s history Geologic Timeline Worksheet (Paste into your journal, and do your calculations on this) We’re going to use this TP roll to represent a timeline, and it contains 396 sheets per roll. So…….*4,600,000,000 years / 396 sheets per roll = 11,616,162 years per sheet            or about 12 million years/sheet. So each sheet represents 12 million years! ***This is the number you divide by) Calculate out how many sheets from the start you will need to count, in order to place each event…. Oldest Rocks on Earth = 4,000,000,000 years ago 4,000 MY / 12 MY per sheet = ­­­­­­____________ sheets. •or 396 - ______­­­­ =  sheets from Earth’s origin First life forms = 3,500,000,000 years ago 3,500 MY / 12 MY per sheet = ___________ sheets             * or 396 - _______ = sheets from Earth’s origin Abundant shell life = 542,000,000 years ago 542 MY / 12 MY per sheet = ____________ sheets             *or 396 - _________ sheets from Earth’s origin The Great Dying (the PT Mass Extinction) = 245,000,000 years ago 245 MY / 12 MY per sheet = _________ sheets             *or 396 - _________ sheets from Earth’s origin Dinosaurs go Extinct (the KT Mass Extinction) = 65,000,000 years ago 65 MY / 12 MY per sheet = ____________ sheets             *or 396 - ____________ sheets from Earth’s origin First hominids = 7,000,000 years ago 7 MY / 12 MY per sheet = _________ sheets             *or 396 - _________ sheets from Earth’s origin The genus Homo = 2,500,000 years ago 2.5 MY /12 MY per sheet  = ___________ sheets             *or 396 - _______ sheets from Earth’s origin --------------------- LT: I can explain the geologic timeline of Earth’s history Geologic Timeline Worksheet (Paste into your journal, and do your calculations on this) We’re going to use this TP roll to represent a timeline, and it contains 396 sheets per roll. So…….*4,600,000,000 years / 396 sheets per roll = 11,616,162 years per sheet            or about 12 million years/sheet. So each sheet represents 12 million years! ***This is the number you divide by) Calculate out how many sheets from the start you will need to count, in order to place each event…. Oldest Rocks on Earth = 4,000,000,000 years ago 4,000 MY / 12 MY per sheet = ­­­­­­____________ sheets. •or 396 - ______­­­­ =  sheets from Earth’s origin First life forms = 3,500,000,000 years ago Abundant shell life = 542,000,000 years ago The Great Dying (the PT Mass Extinction) = 245,000,000 years ago Dinosaurs go Extinct (the KT Mass Extinction) = 65,000,000 years ago First hominids = 7,000,000 years ago The genus Homo = 2,500,000 years ago  --------- Mini Lesson: The purpose of a geologic timeline is to: _____________________________ ______________________________________________________________ Relative Age: _____________________________________________ Absolute Age: _____________________________________________ Timelines also help us to: ____________________________________________ _______________________________________________________________   Event Cards for Geologic Timeline Oldest Rocks on Earth = 4,000,000,000 years ago First life forms = 3,500,000,000 years ago Abundant shell life = 542,000,000 years ago The Great Dying (the PT Mass Extinction) = 245,000,000 years ago Dinosaurs go Extinct (the KT Mass Extinction) = 65,000,000 years ago First hominids = 7,000,000 years ago The genus Homo = 2,500,000 years ago