Posts Tagged ‘water’

Oceans topic performance task

Wednesday, March 30th, 2011

Flooding from tsunami near Sendai, Japan by NASA Goddard Photo and Video on flickr

No one can have failed to be shocked by the recent earthquake and tsunami in northern Japan. 

The final perfomance task for this unit requires you to take what you have learned about water, solubility, osmosis, and use it to answer this problem:-

Read this document for details of the performance task.  oceans performance task

Here are the rubrics that will be used to grade your work. Rubric for performance task – oceans  FINALRubric DCP

Water cycle

Friday, March 11th, 2011

rain by DRB62 on flickr

Your task is to research the water cycle, then create a story in comic life to represent it. 

You should include the following processes in your work: evaporation, precipitation, transpiration, condensation, infiltration, capillary action, run off. 

Here are a few links to help get you started: water cycle  more water cycle  brainpop video

Solubility

Tuesday, January 11th, 2011

Graduated cylinders and beaker filled with chemical compoundsSolute + solvent = solution

We’ll investigate factors affecting solubility by designing an experiment, then performing it and reporting on it.  Here are the rubrics that will be used to guide this. FINAL Rubric design  FINALRubric DCP   FINAL Rubric CE

This link has some useful information to help you explain your findings.

We’ll learn about saturated solutions and what actually happens when a substance dissolves.  We’ll also make some predictions as to the kinds of substances that can dissolve in water.

Water – the liquid of life

Thursday, December 2nd, 2010

pondskater by Robbie G1 on flickr

Our new unit is about OCEANS.  In this unit we will cover all kinds of interesting ideas, but we’ll start by looking at the structure and properties of waterThis site has a ton of information on water.  This is another good one.  These videos are useful to help you understand both the structure and the properties. One. Two. ThreeFour

Now try and answer these questions:-

  • Why are water molecules considered to be sticky?  Can you give examples of where this is useful in nature?
  • How can insects like pondskaters walk on water? [See picture] Or how can this lizard run on water?
  • Why can fish survive in a pond during the winter when the pond freezes over?
  • Water is a very good solvent.  This means it dissolves many substances.  What makes it so good as a solvent? 
  • Water is used to transport substances in our body.  Give the names of 2 liquids in our bodies that contain water, and say what they dissolve.
  • Why do we cool down when we sweat?

Chemical elements and water

Wednesday, September 22nd, 2010

the world of water by Snap(R) on flickr

Here is the syllabus outline for Topic 3, and also Topics 7 and 8 since they are extensions of Topic 3.  Topic 3,7,8 – syllabus outline

The first section has to do with chemical elements and water.

  • What are the most frequently occurring chemical elements in living things? 
  • Why are calcium, sulfur, phosphorus, sodium and iron needed by plants, animals or prokaryotes?
  • What does a water molecule look like?
  • What are the thermal, cohesive and solvent properties of water?
  • How do these properties relate to water’s use in living organisms as a coolant, medium for metabolic reactions and transport medium?

Try this webquest (thanks Mr Hobbins) to help you cover these points: Water Web quest

This presentation might help, and so might this answer scheme!  Water Web quest MScheme

ToK link:  Some people have claimed that water has memory.  Others say this is pseudoscience.  Do some reading and make up your own minds!

Structures of Life

Monday, October 12th, 2009
macro water drop by Hypergurl on flickr

macro water drop by Hypergurl on flickr

Here are the notes for the next section of the course.  Download and print if you like.  Make sure you thank Mr. Boulton for making them 🙂

Structures of Life notes