EARTH’S BIOLOGICAL HISTORY

January 7 Define the vocabulary word and include a picture

•Mold fossil (pg.73)• Cast fossil (pg.73)• Petrified/ permineralized fossil (pg.72)• Carbonized fossil (pg.72)• Trace fossil (pg. 74)

January 8: Fossil matching: Write the number and matching letter

A Jellyfish

B Brittle Star

C Scallop Shell

D Sea Snail

E Pearly Nautilus Shell

1.

2.

3.

4.

5.

January 8 answers

1B Brittle StarThis fossil is about 370 million years old

and was found in Germany.

2E Pearly Nautilus ShellThis fossil is about 440 million years old

and was found in Toronto.

3C Scallop ShellThis fossil is about 250 million years old

and was found in British Columbia.

4A JellyfishThis fossil is about 300 million years old

and was found in Illinois, U.S.A.

5D Sea SnailThis fossil is about 370 million years old

and was found in Ohio, U.S.A.

January 9By knowing the age of the rock that a fossil is found in, geologists can usually tell the age of the fossil.

Copy This: Dating a fossil by saying it is older or younger than another fossil is called relative dating. Dating a fossil by assigning it a specific age is called absolute dating.Directions: Write the sentence and put an “A” next to the examples of absolute dates and an “R” next to examples of relative dates.1.) A house built in 1805. ____2.) Pyramid with the most recent form of Mayan writing on the wall. ____2.) Charred wood from the Great Chicago Fire. _____

January 9 answers1.) A house built in 1805. _A_2.) Pyramid with the most recent form of Mayan writing on the wall. _R__

3.) Charred wood from the Great Chicago Fire. _A__

Practice: 1.) The oldest tomb in the Valley of the Kings ____2.) Bronze Age Axe head from England ____3.) Barn before the one currently standing ____

January 10: Answer in complete sentences.

•Why are index fossils more useful to paleontologists than many other fossils?

•Describe two conditions that improve the chances of fossil formation.

January 13

Answer # 1-11 on Page 96: You do not have to write the question

January 14

Aside from moving plates, what other factors could cause an organism’s environment to change?

Jan15

January 21: Do not write question.Joe did an experiment. He applied different forces to a toy car and measured the acceleration for each force. Here is his data. What is the dependent variable in Joe’s experiment?

A. AccelerationB. Trial numberC. The forceD. The mass of the object

The answer is A. If the force increases then the acceleration increases.

Write: When making a line graph:Write the sentence that best answers the sentence starter above.* It makes no difference which variable goes where.* The independent variable goes on the "y" axis.*The dependent variable goes on the "x" axis.* The independent variable goes on the "x" axis.

January 22

January 22 answer:

•The independent variable goes on the "x" axis. It is the value that YOU as the experimenter are changing… remember, if (cause) …then (effect)…•If the independent variable changes then it causes the dependent variable to change.

January 23Write: Hypothesis: If the weight hanging on a spring is increased then the length of the spring will increase proportionally.

Which of the following statements is correct concerning the hypothesis shown above? Write the sentence that best answers this question.

*Weight is the independent variable and spring length is the dependent variable.

* Length is the dependent variable and spring length is the dependent variable

* Weight is the effect and spring length is the cause.

* Length is the cause and proportionality is the effect.

Jan. 23 answer

•The correct answer is “A”. Weight is the independent variable ( cause) and spring length is the dependent variable (effect).

January 25 No daily warm-up.

Please get your packet on your desk. You need a piece of notebook paper with your name on it for the test.