Class room Observation First Quarter Science

Classroom Observation Powerpoint presentation in science 8

1. .

2. CLASSROOM RULES ATTENDANCE

3. PARTICIPATION CHECKLIST

4. CAR RACING GAME Who will win the race? Who will win the race? START

5. CAR RACING GAME Click to make the blue car move Click to make the yellow car move Click to make the green car move Click to make the red car move Go to Questions N ext

6. 1 2 3 4 5 QUESTIONS

7. What is the speed of sound at a temperature of 35 o C? See Answer QUESTION NO. 1

8. 352m/s Return to Race ANSWER

9. Solve for the temperature given the speed of 350m/s See Answer QUESTION NO. 2

10. 31.666 32 o C Return to Race ANSWER NO. 2

11. What is the speed of sound at a temperature of 33 o C? See Answer QUESTION NO. 3

12. 350.8 351 m/s Return to Race ANSWER NO. 3

13. What is the speed of sound at a temperature of 37 o C? See Answer QUESTION NO. 4

14. 353.2 353m/s Return to Race ANSWER NO. 4

15. Solve for the temperature given the speed of 400m/s See Answer QUESTION NO. 5

16. 115 o C Return to Race ANSWER NO. 5

17. COLOR ME

18. What are the colors found in the rainbow? Why do you think the red color appears to be on top of the rainbow and violet at the bottom? Do you have any idea how the rainbow is formed?

19.  Describe what is dispersion of light.  Draw and color the beam of light when it passes through the prism.  Justify and give scientific explanations about the natural phenomena in the environment Learning Objectives

20. Activity Time

21. SPIN Presentation of Outputs

22. Group 1 1. What colors will be produced when the white light passes through the prism?

23. SPIN

24. ANSWER ROYGBIV Red,Orange,Yellow,Green , Blue,Indigo,Violet

25. Group 2 2. Why does the white light separate into different colors as it passes through the prism?

26. SPIN

27. ANSWER As light passes through the prism, it slows and bends, but different wavelengths bend at different angles. This separates light into different wavelengths , forming a rainbow of colors.

28. Group 3 3. Why does the color red is on top of the rainbow and violet is at the bottom?

29. SPIN

30. ANSWER Red is found on top of the rainbow because it has the lowest frequency and the least energy while violet has the highest frequency and energy that is why it is found at the bottom of the rainbow

31. Group 4 4. What is dispersion of light?

32. SPIN

33. ANSWER Ito ang paghihiwalay ng mga components ng visible light sa spectrum nito dahil sa pagkakaiba-iba ng kanilang degrees of refraction

34. Group 1 5. What is refraction of light?

35. SPIN

36. ANSWER Ito ang pagbend ng light dahil sa pagkakaiba ng optical density ng mga medium

37. Group 2 6. What is scattering of light?

38. SPIN

39. ANSWER When sunlight enters the atmosphere of the earth, the atoms and molecules of different gases present in the air absorb the light. Then these atoms re-emit light in all directions

40. Group 3 7. Why do you think is color green is in the middle of yellow and blue?

41. SPIN

42. ANSWER When we combine color yellow and blue, the resulting color is green

43. Group 4 8.If we combine color red and yellow, what will be the resulting color?

44. SPIN

45. ANSWER Orange

46. ANSWER Rainbows are formed when light from the sun is scattered by water droplets through a process called refraction. Refraction occurs when the light from the sun changes direction when passing through a medium denser than air, such as raindrop.Once the refracted light enters the raindrop, it is reflected back and will disperse splitting into 7 different colors.

47. A secondary rainbow appears if the sunlight is reflected twice inside the water droplets. Secondary rainbows are fainter, and the order of the color is reversed, with red on the bottom.

48. ANSWER Gases and particles in Earth’s atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter,smaller waves. This is why we see a blue sky most of the time.

49. ANSWER Bigger water particles like water droplets within the cloud scatter all wavelengths, the scattered light interacts and combines to generate a white color.

50. ANSWER We see color green on the leaves of plants, because only the wavelength of light that corresponds to green is being reflected back into out eyes from the leaf, while all of the other wavelengths of light are absorbed by it. This is due to the presence of chlorophyll within the leaf, which absorbs all wavelengths of light on the visible spectrum, except green light waves

51. QUIZ

52. ASSIGNMENT