1 / 11

Was our pond healthy? How do you know?

Was our pond healthy? How do you know?. Agenda for Thursday Sept 29 th Quiz Cholera stuff Learning Targets Understand the need for evidence Use mapping skills to plot data Use plotted data to infer a possible cause for the disease. London 170 years ago.

omana
Download Presentation

Was our pond healthy? How do you know?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Was our pond healthy? How do you know? Agenda for Thursday Sept 29th • Quiz • Cholera stuff Learning Targets • Understand the need for evidence • Use mapping skills to plot data • Use plotted data to infer a possible cause for the disease

  2. London 170 years ago • A new and terrible disease was killing hundreds of people • Several outbreaks • Ideas about how it spread but no one attempted to prove the cause

  3. Cholera • Problem in India and the far east since 400 B.C. • Quickly spread because of travel and trade • Cause of over 21,000 deaths • 19th century cholera caused widespread death in the U.S. • Poor sanitation & lack of understanding • Come and go • Not everyone got it • Still a problem today in India and other places

  4. What was a main reason cholera spread? Agenda for Friday Sept 30th • Finish Cholera • Movie Learning Targets • Understand the need for evidence • Use plotted data to infer a possible cause for the disease

  5. Vocab • Hypothesis – educated guess based on observations • Theory – based on extensive evidence and research • Infer (inference) – reach conclusion based on the evidence you have

  6. What is a theory? Agenda for Monday Oct 3rd • Finish letter • How to get rid of contaminants in water

  7. How is chlorine both good and bad? Agenda for Tuesday Oct 4th 1. Chlorine lab

  8. If chlorine can be dangerous, how can we use it to kill organisms in our water? Agenda for Tuesday Oct 4th 1. Chlorination Lab

  9. What are some hazards with using chlorine? Agenda for Wednesday Oct 5th • Finish Chlorine stuff • pH

  10. Common Values of Chlorine • Pool water has between 1 and 3 ppm chlorine • Tap water has between .2 and .5 ppm • Minimum level of chlorine must be .2 ppm to kill organisms

More Related