ONe doesn't have to travel to feel less weight. For instance the
bouyant force helps one feel much lighter in water. He balloons in
our atmosphere, going over the hill on a roller coaster or even on a
country road (Ohio anyway) provides that whoa! feeling which is a
moment of weightlessness that training astronauts feel in the vomit
comet jet doing parabolas. All these "weight differences" do not
matter to one's "matter"
On Mar 15, 2006, at 2:37 PM, Cockroft, Ellafe A. wrote:
Yes, indeed!
For enrichment, while studying the solar system, you can also ask
them what happens to their mass and weight if they go to the moon or
Jupiter. As the moon's gravitational force is 1/6 that of earth,
then they would weigh less on the moon while their masses stay the same.
________________________________
From: channel-talkforce-bounces@learner.org on behalf of Stevens,
Mary K.
Sent: Tue 3/14/2006 1:46 PM
To: Discussion list for SCIENCE IN FOCUS: FORCE AND MOTION
Subject: RE: mass and volume inquiry
I love that!!! The students will enjoy the literature connection
and a clever way to make comprehension of matter fun.
________________________________
From: channel-talkforce-bounces@learner.org on behalf of Cockroft,
Ellafe A.
Sent: Mon 3/13/2006 3:11 PM
To: Discussion list for SCIENCE IN FOCUS: FORCE AND MOTION
Cc: Deresz, Donald A.
Subject: RE: mass and volume inquiry
Hi Kristen,
Tell them a story about Archimedes and King Midas' golden crown. How
he had to weigh the crown of gold and determine if the King's crown
maker was substituting inferior metal. After taking a bath, he ran
out and shouted "Eureka" as he determined that the bouyant force on a
submerged object is equal to the weight of the fluid displaced. This
method is normally used these days to determined the volume and
therefore the density of an irregular object by measuring the mass in
air and it's effective mass when submerged in water. This effective
mass when submerged in water is its actual mass minus the mass if the
fluid displaced. Mass divided by volume gives a measure of density
of the object. Archimedes found that the density of the crown was
actually less than gold, so it was "Off with his head!"
________________________________
From: channel-talkforce-bounces@learner.org on behalf of Kemp, Mary June
Sent: Mon 3/13/2006 1:39 PM
To: Discussion list for SCIENCE IN FOCUS: FORCE AND MOTION
Subject: Re: [Channel-talkforce] MIAMI-DADE PARTICIPANTS
Dear Kristen
I am ccing Don Deresz who is the mentor for this group--maybe he can
respond to this question
Thanks for asking.
Mary
Mary Kemp
WLRN ITV SERVICES
Distance Learning and Community Outreach
7003 SW 4th Street
Miami FL 33144
786-275-0803
786-275-0832 Fax
mkemp@wlrn.org
-----Original Message-----
From: channel-talkforce-bounces@learner.org [mailto:channel-
talkforce-bounces@learner.org] On Behalf Of Levy, Kristen
Sent: Monday, March 13, 2006 1:35 PM
To: Discussion list for SCIENCE IN FOCUS: FORCE AND MOTION
Subject: Re: [Channel-talkforce] MIAMI-DADE PARTICIPANTS
Yours is the first email I've received; however, the programs
weren't supposed to be viewed until today, so I'm not sure if any
emails were sent previously.
One topic I'd like to discuss with other teachers is how to go about
having students remember the difference between mass and volume. Do
you have any activities or pneumonic devices for teaching mass and
volume? How do your students remember the units that mass and volume
are measured in?
I normally teach a unit on density, which we spend a lot of time
on, before delving into force and gravity. Still, many student
struggle with the measurements.
Thank you,
Kristen Levy
7th Grade Science
TJMS
Kristen.Levy@pwssd.k12.wi.us
-----Original Message-----
From: channel-talkforce-bounces@learner.org [mailto:channel-
talkforce-bounces@learner.org]On Behalf Of Kemp, Mary June
Sent: Monday, March 13, 2006 11:56 AM
To: channel-talkforce@learner.org
Subject: [Channel-talkforce] MIAMI-DADE PARTICIPANTS
WELCOME TO THE ANNENBERG WORKSHOP
My email wasn't working correctly
Please let me know how you are doing via Channel-talkforce!
Mary Kemp
WLRN ITV SERVICES
Distance Learning and Community Outreach
7003 SW 4th Street
Miami FL 33144
786-275-0803
786-275-0832 Fax
mkemp@wlrn.org
_______________________________________________
Channel-talkforce mailing list
Channel-talkforce@learner.org
http://www.learner.org/mailman/listinfo/channel-talkforce
You may un-subscribe from this email list at any time by using the
online form at the above URL. If you have difficulty using this form,
please send email to Channel-talkforce-admin@learner.org and our
mailing list administrator will assist you. Our privacy policy is
posted online at: http://www.learner.org/about/privacy_policy.html
Laurie Godfrey
lgodfrey@mac.com
_______________________________________________
Channel-talkforce mailing list
Channel-talkforce@learner.org
http://www.learner.org/mailman/listinfo/channel-talkforce
You may un-subscribe from this email list at any time by using the online form at the above URL. If you have difficulty using this form, please send email to Channel-talkforce-admin@learner.org and our mailing list administrator will assist you. Our privacy policy is posted online at: http://www.learner.org/about/privacy_policy.html
Received on Thu Mar 16 10:15:41 2006
