1. Wed/Thurs Sept 24-25 Objective: Identify the independent and dependent variables for any experiment. Checkpoint: When carbon dioxide (CO 2 ) dissolves in the ocean, does it become acidic, basic, or neutral? HW: Study for pH quiz tomorrow. pH poster due Monday

2. Project Requirements Past Due Data Table (must be completely filled out) Product – 3D model (1 per pair) – Poster (1 per pair) – Essay (individual) – Speech (individual) CER paragraph (Claim, 5 pieces of Evidence, Reasoning) – Each person must have their own unique CER, even if working in a pair.

3. Homework packets due yesterday + checkpoints

4. The Acid Sea Reading Quiz

5. Get textbooks!

6. Write down the following pieces of information on your data table: Acid Base Neutral Drain cleaner 14 base

7. pH poster due Monday

8. Unit 2: Lab Skills To what extent does CO 2 contribute to global warming? What is the effect of ocean acidification on coral reefs?

10. Independent Variables vs. Dependent Variables Independent Variable (IV): What you as a scientist, change on purpose. Dependent Variable (DV): The thing that changes because of the Independent Variable.

11. Example One Juan wants to determine how high an ice cube will float in different temperatures of water.

12. Example Two Maria wants to see if different types of music affects heart rate. She played disco, salsa, rap, and classical music.

13. Example Three Mario wants to see how far room temperature water will spurt out a milk carton when holes are punched at different heights from the bottom of the container.

14. Example Four Guinea pigs are kept at different temperatures for 2 months. Percent weight gain is measured.

15. Example Five The diversity of algae species is calculated before and after an oil spill.

16. Example Six Batches of seeds are soaked in different concentrations of salt water, and germination is counted for each batch.

17. Example Seven Different types of rocket fuel are used and the height the rocket flies is measured.

18. Example Eight Plants are exposed to different amounts of sunlight, and plant height is measured.

19. Example Nine Ice cubes are put in different water temperature baths to see how fast they melt.

20. Example Ten Growth hormones are added to cow food to see the effect on body mass.

21. Example Eleven Earthworms are added to garbage to study the rate of decomposition of trash.

22. Example Twelve In a sleep deprivation study, subjects were given tests on mental alertness after receiving little to no sleep.

23. Example Twelve Different brands of ice cream were tested to determine which one melted the fastest.

24. Example Thirteen Different brands of fertilizer was added to plants to study the effect on plant growth.

25. pH poster due Monday

26. Thought of the Week Be Impeccable with your word. Speak with integrity. Say only what you mean. Avoid using the word to speak against yourself or to gossip about others. Use the power of your word in the direction of truth and love. Miguel Angel Ruiz