Homework/Study Guide for 8.6 Unit Test

Name: ______Period: ______

  1. What is adaptation?
  1. What is natural selection?
  1. What is the saying for natural selection?
  1. What is the difference between man-made and natural factors that can cause extinctions? (Give 3 examples of Each)
  1. Natural selection favors populations with traits that help them survive and reproduce, such as each of the following except: A. camouflage B. Sterility C. Sensory abilities D. Food gathering adaptations
  2. Which animal would be better to survive if the food was limited? A. Elephant B. Worm C. Tiger D. Rhino
  3. How would the following traits benefit animals: Camouflage, Sharp Teeth, Long Neck, Heavy Coat, Good Ears, and the size of a bird’s beak?
  1. Name and give a brief description of the 6 types of fossils.
  1. Name the steps to how fossils form.
  1. What can cause fossils of a distinct area be located in an area where you wouldn’t expect to find them? Such as a warm-weathered plant fossil found in a cold environment.
  1. Name the mass extinction for the following: Precambrian Time, Paleozoic Era, Mesozoic Era, and Cenozoic Era. Create a chart.
  1. Name the divisions in the geologic time scale in order from the smallest to the largest and then from the largest to the smallest.
  1. Complete the following Chart: Precambrian Time, Paleozoic Era, Mesozoic Era, and Cenozoic Era.

Division / Biological and Geological Factors that 1st appeared. / Biological and Geological Factors that Became Dominated
Precambrian Time
Paleozoic Era
Mesozoic Era
Cenozoic Era
  1. Write down the formula that was given to help you remember the divisions in order.
  1. What is the modern day eon, era, period, and epoch?
  1. What is the difference between relative age and absolute age? Give examples.
  1. Describe an index fossil (Give 3 facts)
  1. What are the 2 cross-cutting sections we talked about.
  1. What is the law of superposition?The law of superposition deals with what type of rocks layers.

20. Look at the following layers of sedimentary rocks and place them in the order of the youngest to the oldest.

/ Answer
  1. What is the only Era that has epochs?
  1. What is the first period?
  1. What is the longest time period of Earth?
  1. How do you find an index fossil?
  1. Describe a process that could be used to determine if a modern reptile is closely related to an extinct animal such as a dinosaur.
  1. Select one of the three eras of geologic time. Describe the events of this era including what the environment was like and the types of life seen in this era.

27. Look at the following layers of sedimentary rocks and place them in the order of the youngest to the oldest.

/ Answer