Origin of Life Worksheet - Grade 10 Science
Explore the scientific theories and evidence for the origin of life on Earth with this comprehensive Grade 10 science worksheet.
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Origin of Life: Exploring Early Earth
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Read each question carefully and provide your best answer. For multiple-choice questions, circle the letter corresponding to your chosen answer.
1. Which of the following gases was LEAST likely to be present in Earth's early atmosphere?
Methane
Oxygen
Ammonia
Water vapor
2. The Miller-Urey experiment demonstrated that:
Life originated from extraterrestrial sources.
Complex organisms can evolve rapidly.
Organic molecules could form under early Earth conditions.
Photosynthesis was the first metabolic pathway.
3. The theory that life arose from non-living matter through natural processes is known as .
4. Early Earth's atmosphere was considered a atmosphere because it lacked significant amounts of free oxygen.
5. RNA is thought to have played a crucial role in early life due to its ability to store genetic information and catalyze reactions.
True
False
6. The presence of significant fossil evidence for the first forms of life makes it easy to pinpoint the exact origin of life.
True
False
7. Briefly describe the 'primordial soup' hypothesis regarding the origin of life.
8. The diagram below illustrates a cross-section of Earth's layers, which formed during its early history. How do these early geological conditions relate to the chemical reactions proposed for the origin of life?
