Do all living things become fossils? ~4 min

A. What would have happened to Lucy if a predator or scavenger had found her body before it was buried?

B. Where do you think the best fossils form?

C. What has to happen before a fossil can be found?

1. (2003-40) The diagram shows undisturbed sedimentary rock strata containing fossils. Which statement best summarizes the history of this area? (1 point)

a. The area was once a saltwater sea and later was replaced by a coniferous forest.

b. The area was once a saltwater sea and later was replaced by a forest.

c. The area was once a forest and was replaced by a freshwater lake.

d. The area was once a freshwater lake and was replaced by a saltwater sea.

2. A scientist studying the rocks of an area finds that there are no fossils of insects. Which of the following is the best explanation for this.

a. The area probably had no insects because of the climate.b. There was nothing for the insects to eat in the area.c. Insects did not exist at the time in history when the rocks formed.d. It is possible that insects existed but no fossils were formed or found.

3. (2004-2) In which type of environment did this fossilized fish most likely live? (1 point)

a. A freshwater lakeb. A coral reefc. Near an ocean ventd. Deep ocean trench

4. (2006-21) Fossils help scientists classify extinct species and determine their relationships to current species. Fossils provide the most information about extinct species’ — (1 point)

a. habitatsb. structuresc. metabolismd. reproduction

How do we Know Evolution Happens? ~ 7 min

A. What provided the most interesting and powerful evidence for evolution?

B. What connects all living things today back in history?

C. How are whales like us?

D. How are whales different?

E. What are transitional features? How are they used?

F. Put the Whales in the Making timeline in order. Have Ms. H initial here _____________

G. What transitional features helped you to put the timeline in order?

5. (2004-24) According to the diagram, during the last 40 million years, the structure of the horse’s foot has — (1 point)

a. become smallerb. grown toesc. remained the same sized. lost its toes

Evolution may take several paths. Species may evolve apart (diverge), evolve similar structures and appearances (converge), or evolve

together (coevolve).

Divergent Convergent CoEvolution

H.

I. Why do we say that the monkey arm and whale fin are homologous structures?

6. (2001-34) All the organisms shown above belong to the Phylum Chordata. The structural similarity in the organisms suggests that — a. the humerus is the same size in all

chordates b. only animals that walk on 4 legs need

the humerus

c. the humerus is attached to the skeleton by immovable joints

d. chordates have common ancestors

7. (2004-9) Which skull belongs to an herbivore? a. A b. B c. C d. D

8. (2004-48) The skulls below belong to different animals. Which skull belongs to the animal that is probably unrelated to the other three? a. F b. G c. H d. J

9. (2003-48) The above chart shows vertebrate embryo development. Which of these would be least related to the others? a. 1 b. 2 c. 3 d. 4

10.

Radiometric Dating ~4 min

J. What is radioactive decay?

K. What does radiometric dating let us discover?

L. How is radioactive dating different from relative dating?

11. (2006-29) An understanding of which of these best enabled scientists to determine the approximate ages of fossils? (1 point)

a. Radioactivityb. Geneticsc. Gravityd. Physics

Theories of Evolution

Put the cards in order for each Theory.

Peppered Moth Activityhttp://www.techapps.net/interactives/pepperMoths.swf

Choose Bird’s Eye View (The fun part)Read all directions on the screen and play the simulation game. Run the simulation game at least one in each forest (light and dark). Record you data below. Your conclusion will be much easier to write if you do not try to cheat or change the results!!

1. Dark Forest Light Forest

______% light moths remaining _____% light moths remaining

______% dark moths remaining _____% dark moths remaining

Natural Selection: Adapted

Natural selection is the process by which species _____________________________. No

two organisms _____________________________________. This is called

______________________. Inherited variation comes from the mixture of

________________________________________________________ and

___________________________________________________________________.

One of the most important factors that lead to natural selection is that

_________________________________________________________. These traits can

then be _________________________________________________________________.

In order for natural selection to occur ________________________________________

________________________________________________________________________

Phrase bank:

only the most fit individuals survive change over timeare exactly the same sexual reproductionrandom mutations passed on to the next generation the adaptation must provide an advantage and be heritable variation