Science 10 - Evolution Powerpoint Presen

Science 10

1. SCIENCE 10 Quarter 3 – Week 5

2. Processing Questions: 1.Why do species change over time? 2.Why are some animals that are present before no longer exists today? 3. Why some animals before are very different from the animals we have now? 4 . What evidences will prove their existence? 5 . What do you call the process where species change over time?

3. EVIDENCES OF EVOLUTION

4. Lesson Objectives: 1.Identify the evidences of evolution. 2. Explain the different evidences of evolution. 3. Cite the importance of understanding the origin of life. MELC: Explain how fossil records, comparative anatomy, and genetic information provide evidence for evolution.

5. Charles darwin On his journey around the world, Darwin found evidence of gradual change (evolution). Darwin cited evidences he found in fossil records, geographic distribution and homologous structures.

6. SOURCES OF EVIDENCE FOR EVOLUTION FOSSILS COMPARATIVE ANATOMY EMBRYONIC DEVELOPMENT GENETIC INFORMATION

7. GROUP ACTIVITY “FROM PAST TO PRESENT”

8. GROUP TASK 1 . Identify the traces found on the source of evidence for evolution assigned in your group. 2. Describe how species evolve using those evidences. 3. Make your output more understandable by making some illustrations or drawings of the evidences you are going to present. 4. Determine what ERA or TIME PERIOD in Earth’s history that species/organism lived. 5 . Present or discuss your output in front of the class using the format given in your activity sheets.

9. GROUP PRESENTATION

10. SOURCES OF EVIDENCES FOR EVOLUTION

11. FOSSIL EVIDENCE Fossils are the preserved remains or imprints of organisms that lived and died a long time ago.

12. The fossil and the organism in the upper photos are that of a horseshoe crab . Horseshoe crabs are often referred to as “living fossils” for they had been around for 445 million years! Their fossils reveal that they have not changed that much.

13. Archaeopteryx fossil Archaeopteryx Philippine Eagle

14. HOW FOSSILS ARE FORMED? 1.After an organism died, its body is covered with sediment. 2. The meat decomposes therefore it turns into a fossil. 3. The sediments become rock. The skeleton is pressed. 4. The earth’s movements raise the layers of the rocks to the surface. 5. The rock erodes, exposing a fossil.