8-2 SubUnit Test Study Guide (1st)
Mrs. Mosby
Name: __________________________
Date: _________________
Period: ___________
1. Name some ways fossils are useful.
2. What is the law of superposition?
3. Name the rock layers from the youngest to the oldest.
Answer:
4. What qualities make a good index fossil? Give an example of an index fossil.
5. Which rock layer is the youngest?
6. Can a jellyfish become a fossil? Explain your answer.
7. Does it take a long or short time for an organism to become a fossil? Around how long?
8. Name the steps to fossil formation.
9. Name and give the keywords to the 6 types of fossils.
10. Fossils are normally found in what type of rock?
11. Limestone is what type of rock?
12. According to the rock layers below, which layer formed most recently and which layer was the first to form?
Answer:
13. What should you never do when heating a liquid in a test tube?
14. If an animal is discovered in a glacier, what type of fossil would it be? Explain your answer.
15. What could you use in a lab to heat something up besides fire?
8-2 SubUnit Test Study Guide (1st)
Mrs. Mosby
Name: __________________________
Date: _________________
Period: ___________
1. Name some ways fossils are useful.
-
Use to date rocks or rock layers
-
Gives the shape and size of organisms and other facts
-
TELL ABOUT THE PAST
2. What is the law of superposition?
States that the oldest layer is at the bottom and the youngest layer is at the top
3. Name the rock layers from the youngest to the oldest.
Answer:
E, D, A, B, C
4. What qualities make a good index fossil? Give an example of an index fossil.
UNIQUE, LIVED FOR A SHORT PERIOD OF TIME, FOUND ONLY IN ONE LAYER,
FINDS THE RELATIVE AGE OF ROCKS, AND IS EXTINCT
EX: TRILOBITES
5. Which rock layer is the youngest? 4
6. Can a jellyfish become a fossil? Explain your answer.
NO, BECAUSE IT HAS A SOFT BODY.
7. Does it take a long or short time for an organism to become a fossil? Around how long?
IT TAKES A LONG TIME FOR AN ORGANISM TO BECOME A FOSSIL. IT TAKES ABOUT 10,000
YEARS AND MORE.
8. Name the steps to fossil formation.
1. DEATH AND CONSUMING (MUST DIE NEAR BODIES OF WATER)
2. SEDIMENTATION (BURY BY SEDIMENTS)
3. PERMINERALIZATION (TURN INTO ROCK)
4. UPLIFT (MOVEMENT OF PLATES)
5. REVEALED BY WEATHERING AND EROSION
9. Name and give the keywords to the 6 types of fossils.
1. MOLD-CAVITY
2. CAST-MOLD IS FILLED
3. TRACE- FOOTPRINT, TRAIL, AND BURROWS
4. PETRIFIED- REPLACE AND TURN INTO ROCK
5. CARBON- CARBON IMPRINT
6. PRESERVED- TRAPPED INTO ROCK, ICE, TAR, AND AMBER
10. Fossils are normally found in what type of rock?
SEDIMENTARY ROCK
11. Limestone is what type of rock?
SEDIMENTARY ROCK
12. According to the rock layers below, which layer formed most recently and which layer was the first to form?
Answer:
RECENTLY: SAND
FIRST TO FORM:
LIMESTONE
13. What should you never do when heating a liquid in a test tube?
1. TOUCH IT
2. HOLD IT WITH YOUR HANDS
3. SMELL IT BUT WAFT IT
4. DON’T LOOK DIRECTLY IN IT
14. If an animal is discovered in a glacier, what type of fossil would it be? Explain your answer.
PRESERVED BECAUSE IT IS BEING TRAPPED INTO ICE
15. What could you use in a lab to heat something up besides fire?
- ELECTRICAL HOT PLATE
- LIGHT