Let me introduce…SCIENCE!

1. Let me introduce…SCIENCE! Year 9

2. Rāapa te waru Hui-tanguru • How do we work safely in the lab? • What equipment will we use in the lab? • How do we draw this equipment?

3. Firstly… • Glue in your SLO sheet and key words. • This will happen at the start of every topic. • You need to learn the keywords and meanings for homework.

4. The Lab rules. • No getting out of your seat unless asked to. • No talking out of turn. • Do not bring your bag into the lab. • Tie back your hair (if long). • Wear your safety glasses when doing any experiment. • If in doubt, ask. • Safety comes first! (Pg1)

5. What do we use in the lab? • Lets look at the equipment we use in the lab. • Complete Pg 2 of your workbook after watching the demo.

8. Scientific drawings. • To represent how to set up lab equipment, we us scientific drawings. • (Pg3)

9. Scientific drawings. becomes…

10. Scientific drawings. becomes…

11. Drawing scientific equipment. • What are the rules?

12. Station 1

13. Station 2

14. Station 3

15. Station 4

16. What is it used for?

18. Homework • Key words set 1. • Complete Ex 1.03 in your workbooks.

19. Rāmere te tekau Hui-tanguru. • Key words set 2. • Using the Bunsen burner & getting your ‘BB licence’.

20. The Bunsen burner • Follow me as we learn to light the Bunsen burner. • Now draw a flow diagram to explain how to light the burner.

21. Using the Bunsen burner. • Put on safety glasses. • Close air hole. • Light match and hold to side of barrel. • Turn on the gas. • Adjust gas. • Open air hole. • You are now ready to heat. (If you walk away from the Bb, turn it back on to an orange flame).

22. The Bunsen burner Hole open Hole closed Heating Safety

23. Always use a test tube holder. Point the test tube towards the wall. Keep the test tube moving. Use the hottest part of the flame. Heating a test tube.

24. While you wait… • Make a table and complete the cut and paste activity.

25. You will now need to sit your Bunsen ‘drivers licence’. This will be done next door on the mini lab. Please carry on with your work sheet, while you wait for your turn. Assessment

26. Rāhinā te tekau ma toru Hui-tanguru • Homework check Ex 1.04 • Key words set 3. • Bunsen burner licence re-sit. • Measuring worksheet.

27. Rātū te tekau ma whā Hui-tanguru • Key words • Mark hmwk- Ex1. • Planning an experiment.

28. Skills for scientists. • Planning • Observation • Measuring • Recording • Graphing • Concluding • Evaluating

29. Planning. • Scientists ask questions and plan experiments so they can find the answers. • Every experiment must be a fair test. • This means the experiment is controlled and repeatable by another scientist. • How do we make an experiment a fair test?

30. A fair test. • All variables are kept constant, except for the one being tested. • The independent variable; changes. • The dependent variable; measured. • Everything else MUST stay the same. • You must repeat your experiment at least 3 times, so you can calculate an average.

31. I want to find out which type of sunflower will grow the tallest. Variables; Seed type Water amount Soil and fertilizer Amount of sunlight Independent variable Seed type Dependent variable Height of sunflower Example

32. Independent What you change in the experiment. Type of stain remover Dependent What you measure in the experiment. Colour of the stain after treatment. Variables

33. Observation • You must watch your experiment carefully and make observations. • You could watch for; • Colour change • Fizzing • Change in texture • Change in state

34. Watch the clip and make some observations. • http://video.google.com/videoplay?docid=-2134266654801392897 • Watch the Rb & Cs in a bathtub sections. • What did you observe?

36. Rāapa te tekau ma rima Hui-tanguru Today; • KW set 3. • Making measurements. • The meniscus. • Taking measurements practical.

37. Measuring • It is important that scientists are able to make accurate measurements. • You might measure; • Volume • Height • Length • Temperature • Speed • Time

38. Meniscus

39. Activity • Around the lab you will find 8 equipment stations. • Record the measurement from each station. • Make sure you record the unit. • Sit down when you have completed all stations.

40. Recording • You must record your results or measurements in a results table.

41. Try this… • Make a results table for the following data; • Height of seedlings grown in different coloured lights.

42. Height of seedlings when grown under different coloured lights.

43. Height of seedlings when grown under different coloured lights.

44. Rāmere te tekau ma whitu Hui-tanguru • Mark Ex 1.05. • Finish graphing exercise. • Intrapolation and extrapolation. • Drawing conclusions. • Hmwk- keywords set 2 & Ex 1.08.

45. Graphing. • What type of graphs do you know about? • Why do we make graphs? • How do you read a graph?

46. Graphing • In order to present data, scientists will often make a graph. • The type of graph depends on the type of data.

47. Graphing • Categorical data sets consist of multiple items which are separate  Bar graph

48. Graphing • Continuous data sets consist of data which is related  Line graph

49. Graphing • Biological data about the distribution of organisms in an area; kite graph.

50. Ten second drag race between 2 cars.