Name _______________________ Period__________________________
Properties of Water –
Using Youtube as a substitute teacher.
PART 1. EVALUATING THE USEFULNESS OF A VIDEO
Videos are now an essential part of learning. They can be a substitute for reading
(sometimes) or can help to understand what you have read (through animations and
examples). Videos on a topic can be simple and straight-forward, or highly complex.
Sometimes the most difficult task is simply finding a video that is at the right level FOR
YOU.
I would like you to watch two short videos on water. TAKE NO NOTES. LISTEN and
WATCH!
Ricochet Science (PROPERTIES OF WATER) is a group that is affiliated with a textbook
publisher (McGraw-Hill). They create animated MODELS of many processes that we are
not able to see, because the processes are at a molecular level.
Bozeman Science was (WATER: A POLAR MOLECULE) created by Mr. Anderson, who
currently teaches in Bozeman, Montana. When he first started to teach, he taught EVERY
grade level at a very small school in rural northern Montana. He is also kind of a tech geek,
so long before it was popular, Mr. Anderson was posting his class “lectures” on Youtube.
FIRST, watch Properties of Water. Immediately after watching this first video, answer
questions about the video (see next page). Then watch the second video and answer the
questions on page 3. AGAIN…WATCH and LISTEN…don’t take notes
While it is important for you to learn about the properties of water, I also want you to
consider HOW Ricochet Science and Mr. Anderson approach the teaching of the properties
of water and to determine which style of teaching “suits you”.
Both videos are short. The first one (Ricochet Science, A) is 4 minutes, while the second
(Bozeman, B) is about 8.5 minutes. You must watch both videos.
You should fill in the questions (next page) immediately after viewing each video (ie view
the first video, answer questions on page 2; then view the second video, answer questions
on page 3. Please answer thoughtfully and completely. Ultimately, this will benefit YOU, so
the effort you put into it, will dictate the usefulness of this activity to you.
.
The Properties of Water: https://www.youtube.com/watch?v=aVmU3CLxvgU
Water: A Polar Molecule: https://www.youtube.com/watch?v=iOOvX0jmhJ4
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Name _______________________ Period__________________________
Evaluation of PROPERTIES OF WATER (Ricochet Science)
1. Was the pace of the video too slow, too fast, or “just right” (circle one).
2. What presentation techniques were utilized?
a. Words (text or talking)
b. diagrams
c. animations
d. analogies (explaining a new concept, using a previously understood
concept)
e. examples
3. Overall, did you like the style of presentation? Why or why not?
4. Identify three facts/definitions/examples that you clearly remember from the
presentation. Identify the presentation technique(s) that were used to convey these
(you can use the letters above, a-e).
5. Which presentation techniques (see question 2) provided a better understanding of
how/why water has such unique properties?
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Name _______________________ Period__________________________
Evaluation of : WATER, A POLAR MOLECULE (Bozeman Science)
1. Was the pace of the video too slow, too fast, or “just right” (circle one).
2. What presentation techniques were utilized?
f. Words (text or talking)
g. diagrams
h. animations
i. analogies (explaining a new concept, using a previously understood
concept)
j. examples
3. Overall, did you like the style of presentation? Why or why not?
4. Identify three facts/definitions/examples that you clearly remember from the
presentation. Identify the presentation technique(s) that were used to convey these
(you can use the letters above, a-e).
5. Which presentation techniques (see question 2) provided a better understanding of
how/why water has such unique properties?
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Name _______________________ Period__________________________
USING MULTIPLE SOURCES TO ANSWER QUESTIONS
Now, use the videos to answer the following content questions In parentheses indicate
whether the information you obtained was from the Ricochet Science Video (video A)
or the Bozeman video (Video B) or whether it appeared in both (AB)
You may do this assignment any way you want, but a suggestion is to watch one video
(stopping at each property to fill in any definitions or examples you see in your list), and
then view the second video and do the same thing (refine you definitions if needed as you
move from one video to the other).
POLARITY (identify source of information as A or B or both)
1. What is polarity (in terms of charges and location of charges?
2. What are examples of polarity that we can see?
3. Which source used an analogy to describe the effect of polarity.
4. Was electronegativity important to you in your understanding of why water is
polar?
5. What do we call the bonding that occurs between the water molecules
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Name _______________________ Period__________________________
PROPERTIES OF WATER
I. UNIVERSAL SOLVENT (don’t forget your sources)
1. What is meant by “ water is a universal solvent”?
2. Why is it important that substances be able to dissolve in the human body?
II. COHESION (don’t forget your sources)
Define Cohesion
Why is cohesion important in the transport system s (circulator and
excretory systems) of humans?
III. SURFACE TENSION (don’t forget your sources)
Define Surface tension and identify what makes it stronger than simple cohesion
What are examples of surface tension?
What can some insects do because of high surface tension?
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Name _______________________ Period__________________________
IV. ADHESION (don’t forget your sources)
Define Adhesion
You have seen adhesion in middle school, when you discussed the meniscus (curved
surface) of water in graduated cylinder. But adhesion and cohesion can also work together
to help maintain some life forms.
Most examples of adhesion involve both cohesion and adhesion. Water being absorbed
into a paper towel is an example of cohesion, but in reality, both adhesion and cohesion are
occurring because as water molecules are being attracted to the paper towel, these same
molecules are “dragging” other water molecules with them.
This is called capillary action
V. CAPILLARY ACTION (don’t forget your sources)
Capillary action (the actual definition) is defined as the movement of water
within a porous (small air spaces) material due to the forces of adhesion, cohesion and
surface tension.
Explain why the wider tube (on the right side of the diagram) has a lower
water level than the very narrow tube on the left based on the video
Besides these tubes what is an example of capillary action (hint it is NOT
your circulatory system)?
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Name _______________________ Period__________________________
VI. HIGH HEAT CAPACITY (don’t forget your sources)
1. What does it mean to state “water has a high capacity for heat”
2. The narrator in video A states that “high heat capacity allow the hydrogen bonds in
water to absorb a lot of heat without changing its chemical state from a liquid to a
gas”. Is this statement correct? _____ (don’t believe everything you read on the
internet)! What needs to be changed in this sentence?
3. Provide reasons/examples for why high heat capacity benefits life.
DENSITY:
1. What causes ice to have a lower density that liquid
water?
2. How does the lower density of ice benefit organisms that live under the water?
FINAL QUESTION:
3. Use your lab notebook to journal a summary of what you learned about choosing sources
from the internet to help you to understand a topic. This should be 1-2 well constructed
paragraphs.
Want more depth on the topic?
http://water.usgs.gov/edu/waterproperties.html
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