What is Science?

1. What is Science?

2. Note: not part of notes • What are the limits to science?

3. Aliens????

6. Bigfoot body found????

10. What is Science? • Science is an organized way of using evidence to learn about the natural world.

11. The goal of science is to investigate and understand nature. Once you understand nature, you can make predictions about nature.

12. What types of things can you predict?

13. Weather (Katrina), Agriculture, environmental problems, etc View pastorrobcasey's map Taken in (See more photos here)

16. Acid Rain

17. Biology: is the study of living things • Ex: mammals, fish, bacteria, insects, viruses???

18. Biology involves a search for solutions to medical problems • What are some problems?

19. Examples? West Nile, AIDS, Cancer, Clean water, endangered species, wildlife management.

20. Arthritis

21. Allergies

22. Gangrene

23. When will you use biology to make personal decisions? • Exercise, food/diet, drugs, alcohol, problem solving skills

24. How does a theory develop?

25. As data from numerous experiments builds up, a certain hypothesis may become so well supported that scientists consider it to be a theory. • Atheory is supported by a ton of evidence. But it is not considered to be absolutely true. • Ex: theory of plate tectonics, theory of evolution

28. Theory of Evolution

29. Characteristics of Living Things • 8 characteristics must be met in order for something to be “living” • Try to brainstorm a few

30. 1. All living organisms are made of cells. -A cell is the basic unit of life Characteristics of Living Things

31. Fill out the Pyramid Organism Organ Systems Organs Tissue Cells

32. Prokaryotes vs eukaryotes

33. Reproduction • 2. All living organisms must reproduce • -All living organisms must reproduce sexually or asexually. • a. Life would come to an end without reproduction

34. Reproduction

35. DNA • 3. All living organisms have a genetic code (DNA) • -There is a reason why we look like our parents. DNA is a molecule that gets passed down to the next generation.

36. Genetics

37. DNA

38. Life Cycle • 4. All living organisms must grow • -All living organisms go through a life cycle. • Humans start off as sperm/egg, embryo, zygote, fetus, infant, teenager, etc…

39. All living things must grow

40. Energy • 5. All living organisms need energy • -Organisms need energy to grow, develop, and reproduce. How do you get energy? • Humans= eating, plants= sun, fungus=decomposing

41. Obtain Energy

42. 395 pound sumo wrestler

43. Respond to Environment • 6. All living organisms must respond to their environments • -Not a lot of organisms can survive a winter. What do they do? • a. Hibernate, migrate

44. Respond to Environment

46. Ruby-throated Hummingbird

47. Homeostasis • 7. All living organisms must maintain an internal balance • -Homeostasis: is the process in which organisms maintain their internal balance • If we eat, we have to excrete (removal of waste) • Plants take in CO2 and give off O2

48. Homeostasis

49. Evolution • 8. All living organisms change over time • -This change is known as evolution

50. Change over time