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Science 7 Quiz- Fossils and the Geologic Time Scale (Chapter 6)
I.Multiple Choice
Write the letter of the correct answer on the line to the left.
1. A fossil made of hardened minerals in the shape of the original organism or one of its
parts is called
a. moldb. variation
c. amberd. cast
2. The technique that allows scientists to determine the actual age of a rock is called
a. absolute datingb. gradualism
c. natural selectiond. relative dating
3. Absolute dating of rocks depends on the decay of
a. radioactive elementsb. dead organisms
c. buried DNAd. extinct species
4. The earliest forms of life appeared during
a. The Paleozoic Erab. The Cenozoic Era
b. The Precambrian timec. Mesozoic Era
5. On the Geologic Time Scale, eras are divided into
a. epochsb. indexes
c. periodsd. relative dates
6. In the Cambrian Explosion,
- The super-continent broke apart
- An asteroid collided with Earth
- A great number of different organisms evolved
- Mammals spread into every environment on Earth
7. The Mesozoic Era is often called the
a. Age of Mammalsb. Age of Reptiles
c. Age of Fishd. Age of Amphibians
II.Match each word with its definition
Write the letter of the correct answer on the line to the left.
8. InvertebrateA. In horizontal sedimentary rock layers, the oldest
layer of rock is located on the bottom.
9. EpochB. One of the three long units of geological time.
10. Law of SuperpositionC. Subdivisions of the periods of geological time.
11. EraD. An animal that does not have a backbone.
III.True/False
Write down true if the statement is true, and false if the statement is false.
12. Dinosaurs ruled the Earth during the Paleozoic Era.
13. Lucy was a fossil skeleton of an early ancestor of modern humans.
14. Pangea occurred during the Permian period.
15. “Life exploded” in the Cenozoic Era.
IV.Completion
Fill in the line to complete each statement
16. Plants and animals first reached land during the Era.
17. An animal with a backbone is called a(n) .
18. The Era is often called the Age of Fish.
19. We are currently living in the period.
20. During the period plants start to grow on land.
V.Using Science Skills
Use the diagram below to answer questions 21-25
21. Which rock layer is the oldest? (EXAMPLE: Layer X)
- List ALL the fossils found in layer B.
- What environment existed during layer D? (Circle ONE) LAND orWATER
- What Era occurred in layer F?
- List ALL the fossils in layer G.
FINISHED !!!!