Academic/ELL Earth Science AGENDAApril 17, Tuesday: B Day

Take out your APRIL 6 agenda and your Geologic Time Activity (Geology 12 CH#8 Worksheet)

WARM-UPS: 1. Take out a pen or pencil and a sheet of paper

a. WRITE YOUR FULL NAME ON THE TOP OF THE PAPERb. Number your paper 1 – 40c. You will take a shortened practice SOL test

i. DO YOUR BEST AS THE HIGHEST SCORES WILL RECEIVE A PRIZE!CONTENT OBJECTIVE: The student will investigate and understand that many aspects of the history and evolution of Earth and life can be inferred by studying rocks and fossils. Key concepts include a) traces and remains of ancient, often extinct, life are preserved by various means in many sedimentary rocks; b) superposition, cross-cutting relationships, index fossils, and radioactive decay are methods of dating bodies of rock; c) absolute and relative dating have different applications but can be used together to determine the age of rocks and structures; and d) rocks and fossils from many different geologic periods and epochs are found in Virginia.

Language OBJECTIVE: today you will1. Describe the geologic time scale

a. Differentiate among the division in the geologic time scaleb. Identify the major life forms associated with each erac. DESCRIBE the relative amount of time EACH era lasted

2. Differentiate between absolute and relative time3. Apply the Laws of “Superposition, Cross-cutting relationships, and Inclusions to order rock

layers from oldest to youngest4. TAKE a shortened practice Earth Science SOL

OBJECTIVES: SOL Review & Geologic TIME (Historical Geology)1. PRACTICE Earth Sci SOL

a. Ms. Hutson will pull up 40 questions, 1 at a time, on the Prometheanb. Choose the response you think best answers the question. YOU ARE WORKING

BY YOURSELF!!!c. At the end of the practice test, hand in your work – BE SURE YOU WROTE YOUR

NAME ON YOUR PAPERd. Ms Hutson will go over the correct answers to the questions (GROUP effort)

2. HOMEWORK CHECKa. Laws of Superposition, Cross-cutting relationships, and Inclusions – CORRECT

your work if necessaryQUICK CHECK: EXIT TICKET – complete the “Geologic Puzzle” listing rock layers from oldest to youngest. Turn this in to Ms. Hutson or Ms. Roberson BEFORE YOU LEAVE CLASSHOMEWORK:

1. Complete the Geology QUIZ Review: Geologic time scale and relative age

EXIT TICKET

Put in order from oldest to youngest. Figure #1

EXIT TICKET

Put in order from oldest to youngest. Figure #1

Geologic Time Scale & Relative Time Quiz review

1. List the rock layers in order from OLDEST to YOUNGESTa. Identify the geologic principle that explains the order (superposition, cross-cutting

relationships, etc)

2. Use your geologic time scale notes to complete the following:

_____________________a. Age of Mammals

_____________________b. Age of Reptiles

_____________________c. Age of Invertebrates

_____________________d. These 2 time periods make up the Carboniferous

_____________________

_____________________d. These organisms were dominant during the Age of Invertebrates

_____________________e. Break-up of Pangaea

_____________________f. Humans appeared (time period and Epoch)

_____________________

_____________________ g. List the ERAS where the only events were associated with the formation of

______________________ the EARTH

_____________________ h. Identify the era and time period of the dinosaur extinction

i. List the ERAS associated with the development of ANY TYPE of life forms.

Superposition & Cross-cutting Relationships

James Hutton – the “Father of Geology” , developed the Law of Uniformitarianism = the Present is the key to the Past or the processes acting in the present to form the rocks & physical features of the Earth are the same processes that formed the rocks and physical features of the Earth in the past. Previously, people believed that mountains, canyons, and other features were the result of cataclysmic events.

Relative Time: A comparison based on age of rock layers. Relative time is measured as “older” or “younger”. Absolute time is more exact – age is measured in specific units of time (thousands or millions of years old). Law of Superposition – A measure of relative time = in undisturbed, sedimentary rock layers, the older rocks are on the bottom, and younger layers are on top. Law of Cross-cutting relationships – also a measure of relative time = Layers that cut through pre-existing layers (igneous intrusions) are younger than the layers they cut through. (If you have an “intruder” in a building, the building has to be there BEFORE the person can go INTO it).Faults – faults are younger than the pre-existing layers

Law of Inclusions

The Law of Inclusions was also described by James Hutton and stated that if a rock body (Rock B) contained fragments of another rock body (Rock A), it must be younger than the fragments of rock it contained. The intruding rock (Rock A) must have been there first to provide the fragments.

http://legacy.belmont.sd62.bc.ca/teacher/geology12/assignments/Chapter%208%20WS%201%20-%20KEY.pdf