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Science Chapter Review Book_ Book Inside Earth Chapter 5 - Rocks

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Science Chapter Review Book_ Book  Inside Earth     Chapter  5 - Rocks Powered By Docstoc
					Science Chapter Review
     Book: Inside Earth
     Chapter: 5 - Rocks
              Teacher: Mr. Carl
Objective
 At the end of this lesson, you will be able to:
   Explain how rocks and fossils are used to understand
    the age and geological history of the Earth.
Chapter Terminology:
 Fossils
 Relative Age
 Radioactive Dating
 Geologic Time Scale
 Mass Extinction

 EXIT
Fossils
 Definition: The preserved remains or traces of living
  things.
Fossils
 Explanation: For a fossil to form,
  the remains or traces of an
  organism must be protected
  from decay. Then one of several
  processes may cause a fossil to form. Fossils
  found in rock include petrified fossils, molds and
  casts, carbon films, and trace fossils. Other
  fossils form when the remains of organisms are
  preserved in substances such as tar, amber, or ice.
Fossils
 Example: How are Fossils Made? (click on video to
  start – it may take a few moments to start)
Quiz Time!
 Question: What is a fossil?

   A: Old bones dug up from the Earth
   B: Sediment that hardens into rock from years of
    pressure and heat being applied
   C: The preserved remains or traces of living things.
   D: Any dead animal or plant is a fossil
Congratulations!
 You are correct. Lets move on…
Sorry… selection not correct.
 Lets try this again. Would you like to:

   Review (or)
   Try the quiz again
Relative Age
 Definition: The relative age
  of a rock is its age compared
  to the ages of other rocks.
Relative Age
 Explanation: When you look at a rock containing a
  fossil, your first questions may be, “How old is it?”
  You have probably used the idea of relative age when
  comparing your age with someone else’s age. For
  example, if you say that you are older than your
  brother but younger than your sister, you are
  describing your relative age.
Relative Age
 Click on this video explaining relative age…
Quiz Time!
 Question: What is Relative Age?

   A: Relative age is its age compared to the ages of other
    rocks.
   B: The age of my relatives
   C: Relative age is the number of years since the rock
    formed.
   D: In horizontal sedimentary rock layers, the oldest
    layer is at the bottom and each higher layer is younger
    than the layers below it.
Congratulations!
 You are correct. Lets move on…
Sorry… selection not correct.
 Lets try this again. Would you like to:

   Review (or)
   Try the quiz again
Radioactive Dating
 Definition: measurement of the amount of
  radioactive material (usually carbon 14) that an object
  contains; can be used to estimate the age of the object
Radioactive Dating
 Explanation: Geologists use radioactive dating to
  determine the absolute ages of rocks. In radioactive
  dating, scientists first determine the amount of a
  radioactive element in a rock. Then they compare
  that amount with the amount of the stable element
  into which the radioactive element decays.
Radioactive Dating
Click on the video on Radioactive Dating…
Quiz Time!
 Question: What is Radioactive Dating?

   A: The process of elements breaking down, or decaying
    by releasing particles and energy
   B: The rate of decay of each radioactive element
   C: The process used to achieve a relative date of a rock.
   D: Scientists first determine the amount of a
    radioactive element in a rock, then they compare that
    amount with the amount of the stable element into
    which the radioactive element decays.
Yeay!
 You are correct. Lets go to the next term…
Sorry… selection not correct.
 Lets try this again. Would you like to:

   Review (or)
   Try the quiz again
Geologic Time Scale
 Definition: A record of the geologic events and life
  forms in Earth’s history
Geologic Time Scale
 Explanation: Scientists first developed the geologic
  time scale by studying rock layers and index fossils
  worldwide. With this information, scientists placed
  Earth’s rocks in order by relative age. Later,
  radioactive dating helped determine the absolute age
  of the divisions on the geologic time scale. As
  geologists studied the fossil record, they found major
  changes in the life forms at different times. They used
  these changes to mark where one unit of geologic
  time ends and the next begins. Therefore the
  divisions of the geologic time scale depend on events
  in the history of life on Earth.
Geologic Time Scales
 Click on video to explain Geologic Time Scales
Quiz Time!
 Question: What is a Geologic Time Scale?

   A: It consists of only three Eras: Mesozoic, Paleozoic
    and Precambrian.
   B: The record of the life forms and geologic events in
    Earth’s history.
   C: The time frame of the past 544 million years
   D: The time frame when life existed on Earth
Yippy!
 You are correct. Lets move on…
Sorry… selection not correct.
 Lets try this again. Would you like to:

   Review (or)
   Try the quiz again
Mass Extinction
 Definition: When many types of living things become
  extinct at the same time.
Mass Extinction
 Explanation: The mass extinction at the end of the
  Paleozoic affected both plants and animals, on land
  and in the seas. Scientists do not know what caused
  the mass extinction, but as much as 95 percent of the
  life in the oceans disappeared.
Mass Extinction
 Example: Dinosaurs are an example of a mass
  extinction (click on video to start).
Quiz Time!
 Question: What is Mass Extinction?

   A: A time when all of one type of living thing becomes
    extinct at the same time.
   B: When all land animals die at the same time.
   C: A time when many types of living things become
    extinct at the same time.
   D: Any time a species dies off and becomes extinct.
What a Discovery!
 You are correct. Lets move on…
Sorry… selection not correct.
 Lets try this again. Would you like to:

   Review (or)
   Try the quiz again
Credits
 Absolute VS Relative Ages 2011. TaterChron1. Web. 27 Feb. 2012.
    <http://www.youtube.com/watch?v=JNOmpXo2xlU>.
   Carl, Carrie. Voice Narration. Web. 27 Feb. 2012.
   Dinosaur Extinction. 2009. Sheppard Software Com. Web. 27 Feb. 2012.
    <http://www.youtube.com/watch?v=YQoYF9iRmEs>.
   Geologic “Eras”, Animated 2009. Pellosborn. Web. 27 Feb. 2012.
    <http://www.youtube.com/watch?v=SY3MZ_wNFW8&feature=related
    >.
   How Fossils Are Formed 2009. Sheppard Software Com. Web. 27 Feb.
    2012.
    <http://www.youtube.com/watch?NR=1&feature=endscreen&v=TVwP
    LWOo9TE>.
   Microsoft Office 2007 clipart, movie and sounds
   Radiometric Dating Age of Earth 2007. Acorvettes. Web. 27 Feb. 2012.
    <http://www.youtube.com/watch?v=6SxzfZ8bRO4>.

                                                                    EXIT

				
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