Thursday, 30 January 2014

How Long Can a Person Survive Without Water?

Agenda for today:


Water Knowledge
  • Once we have an understanding of knowledge and concepts, we can make predictions about unfamiliar situations.
Jan 30th & Jan 31st - Lesson 4
  1. Heating up water!  (15 mins)
  2. Quiz yourself (20 mins)
  1. Science Fair: (25 mins)
    1. Feb 13/14th: Design deadline
    2. Feb 17/18th: Data collection deadline
    3. Feb 19/20: Data processing, conclusion and evaluation deadline
    4. Feb 21/24: Presentation materials deadline
    5. Feb 25/26: Refinement and ready for presenting
  1. How do I make a research question from a topic that interests me?
You only require a partner if you have a difficult investigation or you are collecting lots of data.
Content: Students will
  • Describe how thermal energy (heat) is transferred by conduction, convection, and radiation, and how heat conduction differs in conductors and insulators.
  • Explain how thermal energy is transferred throughout the water cycle by the processes of convection, conduction, and radiation
Skills:
  • To categorize examples.
  • Study Skills:
    • To use question and answers to prepare for a test




We watched a video of very cold states of water:

IMG_0174.MOV - Google Drive

We learned that it was so cold that when he threw it in the air it turned into snow

Than we imagined a scenario:

Imagine: You are lost in the desert with no water.  You cannot live long without water; perhaps three days.  The only source of water is very salty.  You have a few materials in your backpack including: some containers of different sizes, a knife, some clear plastic and a compass.  There are no plants for 100s of kilometers.  How could you get freshwater before you die?

This is a saltwater dessert:
Image URL
We learned that you cannot survive without water for 3 days
If we want to learn more information: How Long Can a Person Survive Without Water? | LiveScience




We did two experiments with water that has to do with living without water in a dessert:

video



Than we put it in the sun for the day to see what happens:


What are the ways water can be heated?


Water can be heated and evaporated in different ways:

  • by a pan on a hot plate
  • by sunlight
  • by a lightbulb
  • by a flame
  • by hot water rising and cooling down cooler water above.
  • by touching it with your hands


We did another experiment: 


video


What are the ways water can be heated?

Than we learned after that
Water can be heated and evaporated in different ways:

  • by a pan on a hot plate
  • by sunlight
  • by a lightbulb
  • by a flame
  • by hot water rising and cooling down cooler water above.
  • by touching it with your hands

There are three primary ways in which heat (thermal energy) is transferred:

Heat Transfer
Description
Examples
Where in the Water Cycle?
1) Radiation
  • light heats it up
  • light/infrared → heat
  • by sunlight
  • by a lightbulb
  • by a flame
  • on the surface of the Earth when sunlight hits water
2) Conduction
  • things touch each other
  • thermal of one object → thermal of another object
  • by touching it with your hands
  • by a pan on a hot plate
  • particles touching each other in the atmosphere
  • hot things, such as the ground, touch water
  • Water molecules in the air transfer heat to a window and condense on it.
3) Convection
  • through the movement of fluids
  • thermal of one fluid moves  → thermal of another part of the fluid or a different thing
  • by hot water rising and cooling down cooler water above.
  • hot air rises, and displaces and heats up cooler air above.  Then the cooler air sinks and heats up.


Here is a picture to help you understand:


We learned:

  • What is heat?
  • What is something heat can do?
  • What are three ways heat moves around the universe?
  • movement of what thermal energy
  • Increase the temperature of things.  Cook!
  • Radiation, conduction, convection

Than we quizzed yourself using Quizlet:

I recommend using Flashcards:


Or Scatter:


Reminder: Test is on Feb. 10

Science Fair Information:
    1. Feb 13/14th: Design deadline
    2. Feb 17/18th: Data collection deadline
    3. Feb 19/20: Data processing, conclusion and evaluation deadline
    4. Feb 21/24: Presentation materials deadline
    5. Feb 25/26: Refinement and ready for presenting

Here is more information on the science fair

If you still did not do the form for your research question the deadline is tomorrow

If you do not have a partner you can do this form

Reminder: You only require a partner if you have a difficult investigation or you are collecting lots of data.

3 comments:

  1. This comment has been removed by the author.

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  2. Dear Sophia,
    Personally I think that there is nothing to improve. I really enjoyed reading your blog post and it really shows what we did in class that day and what we learned. Great job!

    ReplyDelete
  3. Sophia,
    I really liked your scribe post. Even if it was a long time ago, when I looked at this post, I was able to remember what we did.The images and the videos really helped, because they were high-definition. I feel like you mentioned all the very important things and explained about it. Although, I think you should be a bit more descriptive, because someone who wasn't there that class wouldn't really be able to understand what we did that class. GOOD JOB!!
    MARTU

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