7th Grade Honors Science
Wednesday, November 08, 2006
Friday 11/3/06
What was done?
What was collected?
What was assigned?
Daily Science Fact
Whales and dolphins do not "sleep" in the conventional sense. Because of their undersea environment, whales and dolphins must be conscious breathers: They have to actively decide when to breathe. Consequently, in order to breathe, they have to be conscious. When you're a conscious breather, it's just not feasible to be completely unconscious -- what if you don't wake up in time? The solution for whales and dolphins is to let one half of the brain sleep at a time. In this way, the animal is never completely unconscious, but it still gets the rest it needs.
- We read Section 17-2: The Muscular System.
- We did the Workbook pages for Section 17-2.
- We took notes on the Musculoskeletal System Powerpoint Presentation.
What was collected?
- Nothing.
What was assigned?
- Completion of the workbook pages.
Daily Science Fact
Whales and dolphins do not "sleep" in the conventional sense. Because of their undersea environment, whales and dolphins must be conscious breathers: They have to actively decide when to breathe. Consequently, in order to breathe, they have to be conscious. When you're a conscious breather, it's just not feasible to be completely unconscious -- what if you don't wake up in time? The solution for whales and dolphins is to let one half of the brain sleep at a time. In this way, the animal is never completely unconscious, but it still gets the rest it needs.
posted by Mr. Kang at 10:31 PM
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