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What is Science and a Review of Metrics. WHAT ARE SPIDERS?

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Presentation on theme: "What is Science and a Review of Metrics. WHAT ARE SPIDERS?"— Presentation transcript:

1 What is Science and a Review of Metrics

2 WHAT ARE SPIDERS?

3 The Cherokee Nation believes that the spider is the bringer of light and fire. The water spider is revered because she was able to bring the fire given by the Great Spirit when the owl, crow and black snake failed.

4 HOW DOES SCIENCE UNDERSTAND ‘WHAT ARE SPIDERS?’

5 What is science? Science is one way humans try to understand the observable world.

6 SCIENCE IS NOT THE ONLY WAY TO UNDERSTAND SPIDERS

7 Alexander Calder

8 How does art try to understand the world?

9 The purpose of art itself is to stimulate the appreciation of life and to intensify the joy of living. Duncan Phillips

10 Gray Larson understands spider behavior in a very unscientific way

11 Maybe Gary Larson is right and spiders do have a sense of humor

12 The author and newspaper man E. B. White had a very different understanding of the role of spiders in a community

13 “Salutations!” said the voice. Wilbur jumped to his feet. “Salu-what?” he cried.

14 “My name,” said the spider, “is Charlotte.”

15 LEAVES OF GRASS by WALT WHITMAN

16 Can humans obtain the qualities of spiders?

17 Art, poetry, literature, religion, philosophy, fantasy and science are all ways of understanding the man’s world.

18 Science is only one of many valid ways humans try to understand the world they live in.

19 Scientists often do not recognize the importance of having more than one perspective on the natural world.

20 In Walt Disney’s a bug’s life some scientists criticized the movie for mistakes

21 Ants are insects and all insects have three pairs of legs.

22 Insects have compound not simple eyes and ants do not have eyelashes!

23 Ants do not talk and they do not have teeth!

24 A bug’s life is not a science lesson it is a cartoon

25

26 Many events in the natural world are outside the methods of science

27 Science cannot figure who you should fall in love with

28 Science does not try to understand who is “beautiful”

29 But scientists can measure our reactions to certain characteristics that may be considered beautiful.

30 How does science try to understand the natural world?

31 1. Accurate Observation - Quantify 2. Explain from Observation-Hypothesis 3. Test the Hypothesis - Experimentation 4. Assemble Ideas into a General Explanation - Theory

32 All scientific knowledge is totally based on confirmed observations of the natural world.

33 Pliny the Elder wrote in 1 A.D. his 37-volume Natural History

34 His Natural History included descriptions of animals throughout the world, including an island with headless men

35 Science does not accept observations on authority, they are accepted on confirmation.

36 When Pliny’s “observations” could not be confirmed by the emerging discipline of science in the 1500’s they were discarded.

37 The famous Galileo applied science to looking to the moons of Jupiter

38 He said the earth revolved around the sun like the moons of Jupiter revolved.

39 In 1632 he was put under house arrest for life because he agreed with Copernicus (1514), defying the authorities of the time who said that everything revolved around the earth

40 Jackson Pallock is consider a great artist by the art authorities

41 In 1632 he was put under house arrest for life because he agreed with Copernicus, defying the authorities of the time who said that everything revolved around the earth

42 Good scientific observations lead to understanding

43 People used to think that plague was a punishment from god.

44 You can see why the plague was called the black death

45 All scientific knowledge is totally based on confirmed observations of the natural world.

46 Science began to observe the tissue of people who died from the plague

47 They always saw the same bacteria in the blood of people who died from the plague

48 It was soon determined that a type of bacteria caused the plague, not the wrath of the gods

49 Once it was determined that plague was caused by a bacteria, scientists began to try to find a cure

50 In order to explain how science understands the natural world you must be able to make good scientific observations

51 What is good scientific observation:

52 What is good scientific observation: 1) Complete and Detailed

53 What is good scientific observation: 1) Complete and Detailed 2) Quantified, Measured

54 What is good scientific observation: 1) Complete and Detailed 2) Quantified, Measured 3) Repeatable

55 How do we quantify observations? Measure!!

56 How accurate do you have to be? Science agrees you may estimate up to 1 decimal past the closes given value.

57 Because the English system is weird science uses the METRIC system based on the number 10

58 G - - M - - K H D b d c m - - µ - - n - - p

59 Base measurements-- distance Distance-- the length between two points Measured in? Use a ruler to measure

60 Use centimeters

61 Base measurements– Mass How much matter is in an object (different from weight) Measured in? Use a scale to measure

62

63 Base measurement– Volume How much space does an object take up? Measured in?? Use a graduated cylinder

64

65 Base Measurement-- Temperature How much energy does an object have Measured in? Use a thermometer

66 Time Seconds, Minutes, Hours

67 Converting Because the metric system is based on 10s to convert all you need to do it move the decimal.

68 Example Convert 800 mm to meters

69 Example Convert 9 km to cm

70 All scientific knowledge is based on accurate observations of the natural world.

71 Observe does not mean “seeing”. Observing means using the senses, such as hearing and smell also seeing.

72 Science can only make inferences based on previous observations

73 What is science? Science is one way humans try to understand the observable world.

74 All scientific knowledge is totally based on confirmed observations of the natural world.

75 What is good scientific observation: 1) Complete and Detailed 2) Quantified, Measured 3) Repeatable

76 How does science try to understand the natural world? 1. Accurate Observation - Quantify 2. Infer from Observation-Hypothesis 3. Test the Hypothesis - Experimentation 4. Assemble Ideas into a General Explanation - Theory

77 Based on repeated observations, scientists infer the most probable explanation

78 This “most probably correct answer” is called a hypothesis

79 The hypothesis is the best possible explanation based on the available observations, but it must be tested to find out if the hypothesis is really correct.

80 A scientific test of a hypothesis is called an experiment. An experiment is a comparison.

81 Experiments compare a test group to the control group changing only ONE Variable at a time

82 When a hypothesis is consistently proven true it becomes a fact.

83 Explanations that are facts are put together into an understanding that is generally accepted by scientists. An accepted explanation in science is called a theory.


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