Properties of Living Things: Searching for Fingerprints of Life on Mars

Transcription

1 LIVE INTERACTIVE YOUR DESKTOP Properties of Living Things: Searching for Fingerprints of Life on Mars Presented by: Rudo Kashiri January 10, :30 p.m. 8:00 p.m. Eastern time 1

2 Introducing today s presenter Rudo Kashiri NASA Explorer Schools Education Specialist NASA Langley Research Center Hampton, VA 2

3 Properties of Living Things: Searching for Fingerprints of Life on Mars Presented by Rudo Kashiri NASA Explorer Schools

4 NASA Explorer Schools + =

5 Agenda NASA Connection Featured lessons: Extremophiles Searching for life NASA Explorer Schools

6 Grade level: 5-8 National science Standards Regulation and behavior Properties and changes of properties in matter Structure and function of living systems

7 Question What does it mean to say that finding a habitable planet is sort of like the story of Goldilocks?

8 Too hot! Just right! Too cold!

9 Too Big or Too Small

10 Potentially Habitable Exoplanet

11 What s essential for life? 1. Deprived of air, you would die within a A.) few minutes B.) days C.) weeks. 2. Deprived of water, you would die within a A.) few minutes B.) days C.) weeks. 3. Deprived of Food, you would die within a A.) few minutes B.) days C.) weeks.

12 Astrobiology in Your Classroom What defines life? What does life look like? Where is life found? What sustains life?

13 Grow Move Breathe Reproduce Feeding Unicellular Multicellular Produce energy Use nutrients Use energy Metabolism Respond to stimuli Adapt/Evolve Displays organization Homeostasis Show heredity Cellular structure

14 Let s Pause for Questions.

15 What are Extremophiles?

16 Discovery of Arsenic Microbe

17 Where is life found on earth?

18 Let s Pause for Questions.

19 Activity: It s Just Right Experiment with gas production of yeast at different temperatures.

20 What will the students learn? The characteristics of life. How temperature is related to the growth and survival of organisms. The concept of life in extreme environments.

21 Materials

22 A Sugar Yeast No water B Sugar Yeast Warm water C Sugar Yeast Warm water D Sugar Yeast Warm water

23 A Sugar Yeast No water Table B Sugar Yeast Warm water Table Sugar Yeast Warm water Warm bath C D Sugar Yeast Warm water Cold bath

24 Graphs and Student Handouts

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26 Ideas

27 Let s Pause for Questions.

28 Earth or Mars?

29 Is there life on Mars?

30 Where should we look for life? NASA/JPL-Caltech

31 Why Curiosity s Mission to Mars Matters Artist s Concept. NASAJPL-Caltech

32 Let s Pause for Questions.

33 Activity: Is it Alive?

34 What will the students learn? How to conduct simulated experiment with soil samples similar to the experiments on the Mars Viking Lander. State relationships between the soil samples using their operational definition of life. How to make an inference about the possibility of life on Mars based on data obtained.

35 Materials

36 A Sand Sugar B Sand Sugar Active dry yeast C Sand Sugar Alka-Seltzer (crushed)

37 Data Sheets

38 Dry Samples

39 Hot water in A A Sand Sugar B Sand Sugar Active dry yeast C Sand Sugar Alka-Seltzer

40 Hot Water in B A Sand Sugar B Sand Sugar Active dry yeast C Sand Sugar Alka-Seltzer

41 Hot water in C A Sand Sugar B Sand Sugar Active dry yeast C Sand Sugar Alka-Seltzer

42 A Physical change, sugar dissolves. Is it Alive? B Chemical reaction after 10 minutes, reaction continued C Immediate chemical reaction, but stopped after 10 minutes.

43 Other Lesson Ideas Using bottles and balloons Measure balloon s circumference

44 Let s Pause for Questions.

45 It s Just Right Do you plan to use these activities in your classroom? Is it Alive? Both Neither one

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49 Rudo Kashiri Thank you for joining us today.

50 Thanks to today s presenter! Rudo Kashiri NASA Explorer Schools Education Specialist NASA Langley Research Center Hampton, VA 50

51 Thank you to the sponsor of tonight s web seminar: 51 This web seminar contains information about programs, products, and services offered by third parties, as well as links to third-party websites. The presence of a listing or such information does not constitute an endorsement by NSTA of a particular company or organization, or its programs, products, or services.

52 National Science Teachers Association Gerry Wheeler, Interim Executive Director Zipporah Miller, Associate Executive Director, Conferences and Programs Al Byers, Ph.D., Assistant Executive Director, e-learning and Government Partnerships Flavio Mendez, Senior Director, NSTA Learning Center NSTA Web Seminars Brynn Slate, Manager Jeff Layman, Technical Coordinator 52