Characteristics of Earth Necessary to support life

characteristics of Earth Necessary to support life

1. 7th grade Earth’s Resources Let’s play a game

2. Guess the specific word that fits the theme of the photos presented. You can use the letters given below as clues for your answer.

3. T_ _ PE_ _ T_ _ E

4. TEMPERATURE

5. _ A _ _ E R

6. WATER

7. A_MO_P_E_E

8. ATMOSPHERE

9. _N_R_Y

10. ENERGY

11. N_T_IE_ _ S

12. NUTRIENTS

13. Characteristics of Earth Necessary to support life

14. Learning objectives: identify the different factors necessary to support life in a planet; describe the characteristics of Earth necessary to support life; and explain how ach characteristic affect life on Earth

15. Earth has been existing 4.543 billion years. In its early formation, life was not possible because of the environment did not permit it.

16. Factor make life possible on earth Temperature Water Atmosphere Energy nutrients

17. Temperature It influence how quickly atoms, molecules or organism move. Low temperature slows down chemical reaction and produces ice that makes liquid water unavailable. High temperature can cause break down of important biological molecules (In Earth’s condition, temperature is just right to support life)

18. Water Water is one of the important ingredients in the different biological processes. Absence of this will interfere reaction necessary for life. Water on Earth has different forms. It is solid (ice) in the two poles and liquid along the equator which allow living organism to consume it.

19. Atmosphere It provides significant insulation or shielding from the sun and impact of small to medium size meteorites. Greenhouse gases like carbon dioxide and methane trap heat and protects our planet from freezing.

20. Atmosphere The size of the planet and its distance from the sun affect its ability to hold significant amount of atmosphere. Earth has the right size and its distance from the sun that permit to have a right amount of atmosphere.

21. Energy Earth has available energy-rich sunlight to support life.

22. Energy Living organisms like plants and photosynthetic bacteria use light as the source of their energy.

23. Energy Earth is at right position from the sun that enable it to harness enough amount of sunlight

24. Nutrients It is an essential factor used to build and maintain organism’s body structure. In sufficient or absence of nutrients can impede synthesis of the different biological molecules.

25. Activity Write T if the statement is correct but id it is false, change the underlined word or group of words to make the whole statement true.

26. Low temperature Slow down chemical reaction among living organisms.

27. Atmosphere provides chemicals needed for life.

28. Gravity does not affect the Earth’s atmosphere

29. Water traps heat from the sun.

30. Size and distance from the sun affect the planet’s ability to hold atmosphere.

31. Absence of water interferes reactions necessary for life

32. Earth cannot provide enough amount of sunlight as source of energy of most organisms

33. Insufficient or absence of nutrients can hinder different biological processes.

34. Volcanism helps in nutrient recycling

35. Atmosphere protects Earth from small to medium size meteorite impact.

36.   Biological Factors Illustration/ Picture (Draw or cut picture that isrelated to the biological factor .) Based on your experience, answer the following questions briefly.   1. Temperature   How does temperature affect the ability of a planet to support life?   2. Water   Why is liquid water important?   3. Atmosphere   What is the role of atmosphere in sustaining life on Earth?   4. Energy   How do living organisms harness energy? 5. Nutrients   How are nutrients recycled on Earth? Complete the table by supplying the needed information on your answer sheet.