Timeline+activity

1. Measure 5 meters (16 feet 5 inches) on the white board at the front of class. Staple some white paper beside the white board if needed. 4. Using a meter stick, draw a 5 meter line through across the middle of the paper from left to right. 5. In the top left corner, make a scale. Label the scale: 1 cm = 10 million years 6. Starting on the left side of the paper, measure 5 cm, to the right on the line, and make a vertical mark. Label this mark with the word -**Today**. 7. From this mark, measure 1 meter to the right on this line and make a vertical mark. Label this mark 1 billion years. Measure and mark each meter after that up to 4 meters or 4 billion years from today. 8. Now, measure 60 cm to make the total length of the time line 4.6 meters. Mark and label this distance 4.6 billion years (**The Beginning of The Earth**). 9. Label the year and name of each era on your geologic time scale. Using the scale 1 cm = 10 million years, measure the distance to each era from Today by using the following information. a. Cenozoic Era = 65 million years ago = ______________ cm from Today b. Mesozoic Era = 245 million years ago = ______________ cm from Today c. Paleozoic Era = 545 million years ago = ______________ cm from Today d. Precambrian Era = 4.6 **billion** years ago = ______________ cm from Today 10. Label the major events of each era on your geologic time scale by using the basic geologic time scale as a guide. First one cell organisms Cyanobacteria Oxygen begins to accumulate <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Algae like Stromatolites <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">First organisms with shells <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Trilobites dominate <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">First fish <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">First land plants <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">First birds <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Dinosaurs dominate <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Great Paleozoic extinction <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">fir**s**t reptiles <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">dinosaurs extinct <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">first mammals <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">coal-forming forest <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">pangaea begins to break <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">first humans <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">major glaciers in N.
 * <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Making a Geologic Time Line **
 * <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Procedure **<span style="font-family: 'Times New Roman','serif'; font-size: 16px;">: Use this lab sheet and read the directions carefully to complete the activity.
 * <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Eras **
 * <span style="font-family: 'Times New Roman','serif'; font-size: 16px;">Geologic Time Line Major Events **