Geologic Time Scale Exploration
A Grade 12 science worksheet exploring the Geologic Time Scale, major eras, periods, and significant events in Earth's history.
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Geologic Time Scale Exploration
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Read each question carefully and provide thoughtful answers based on your understanding of the Geologic Time Scale. Refer to your notes or textbook if needed.
1. Which eon represents the earliest part of Earth's history, characterized by the formation of the Earth and Moon?
Phanerozoic Eon
Proterozoic Eon
Archean Eon
Hadean Eon
2. The Mesozoic Era is famously known as the 'Age of '.
Mammals
Fishes
Dinosaurs
Amphibians
3. The Geologic Time Scale is divided into eons, eras, periods, and .
4. The Cambrian Explosion, a rapid diversification of life, occurred at the beginning of the Period.
5. The supercontinent formed during the Paleozoic Era.
6. The Cenozoic Era is the current era we are living in.
True
False
7. The extinction event that wiped out the dinosaurs occurred at the end of the Triassic Period.
True
False
8. Briefly explain the principle of superposition and how it is used to determine the relative ages of rock layers.
9. Describe one major biological event that occurred during the Paleozoic Era and its significance.
Match each geological term with its definition.
10. Absolute Dating
a. The study of fossils
11. Relative Dating
b. Determining the age of a rock or fossil in years
12. Paleontology
c. Determining the chronological order of events without knowing their absolute ages
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