Showing posts with label *More Science. Show all posts
Showing posts with label *More Science. Show all posts

Monday, December 20, 2010

Total Lunar Eclipse and Winter Solstice Tonight!

There is to be a total lunar eclipse tonight, nearly at the same time as the Winter Solstice.  It has been 372 years since these occurred on the same day.  The Winter Solstice is the moment at which the North Pole is tilted the farthest away from the sun.  This is the shortest day of the year and the beginning of winter in the Northern Hemisphere.
These two events are unrelated, but they do not usually happen on the same day.
You can see the eclipse if you don't mind staying up awhile!
I'm telling my kids that if they want to stay up, then they have to look up some information first and tell me a few things they've learned, hee hee!
The moon starts into the earth's shadow at 1:33am EST and will be totally eclipsed from 2:41 to 3:53 EST.   This is when the moon will be red. 
You lucky people in the Pacific Time Zone!  Your clocks will be three hours earlier than mine!
I hope I can stay up!  Maybe I need a nap.  Zzzzz....
Thanks to Apologia posting this on Facebook.

Total Lunar Eclipse on Aug. 28, 2007, seen from Kapiolani Park in Honolulu, Hawaii. Shot thru a telescope, about every 5 minutes.


Why does the moon turn red?  Simply put, it's for the same reason that sunsets are red.
White light is made of red, green, and blue. Our atmosphere filters out the shorter-wavelength light (blues, greens), so right on the edge of the earth's silhouette, the light from the sun that is hitting the moon is red.
If you were on the moon during a lunar eclipse, you would see a red ring around the silhouette of the earth.
The moon has no light of it's own and reflects whatever kind of light from the sun hits it.

--Last year in Physical Science, we did a very simple experiment (sheet of paper, red marker) that shows how the light spectrum works this way.  (Scroll down -- it would be the last one, of course!)



►At EarthSky.org, watch a video and/or read why "there won’t be a total lunar eclipse this far north on the sky’s dome until December 21, 2485."
Scroll down for specific times for different time zones. 
►More information on Lunar Eclipses, including a list of future eclipses, and from what region of the earth they can be seen.  Scroll down.
♦Learn more about light and why you see a rainbow the way you do. 

UPDATE: Here is the eclipse from yesterday.

Winter Solstice Lunar Eclipse from William Castleman on Vimeo.

Friday, August 13, 2010

Meteor Shower, (er, sprinkle)

I let my kids stay up to watch the meteor shower last night. 
Together, they saw a total of nine.
Nine meteors.
Well, at least they got to see a few!  =)

Watch a video on youtube.  (It loops about 3 times.)

Saturday, August 7, 2010

More Biology Links!

  • CELLS Alive!  Interactive animations.  Under Cell Biology:  Cell model, click on diff parts; Web cams of cells multiplying; Mitosis, Meiosis, full animation, or click to pause on a phase.  There are also puzzles, quizzes, and more!  Also see Microbiology, Immunology, & MicroscopyVERY good!  =)
  • The Biology Corner - a GREAT resource!  Click on Cells, then another link (one that says virtual lab).  In the directions is a link to copy/paste to a virtual microscope!  =)  There's a tutorial and several slides for practice.  There's more, including plant and animal cell coloring pages, some experiments, and powerpoint presentations.  And that's just under the "Cell" category!  
  • Awesome Virtual Cell - More 3D than flat, highlights portions of the cell with names.  Click on parts for closer view.  Some can zoom or rotate.
  • Department of Biological Sciences - I haven't checked this one out much.  It's nearly midnight, and I'm going to bed!  But it looks promising!
These are now listed under Educational Links.  Oh, yeah!  I love these sites.  =)

Monday, July 26, 2010

New Resources for the Elements!

Here are a couple of new resources that I think are just Awesome!  They are now listed under Educational Links.
And don't forget another one of my favorites:
  • Jefferson Labs - L♥VE the Periodic Table Elements online interactive games!!!  Learn the elements; calculate the number of protons, electrons, and neutrons; balance chemical equations, and more!  Choose your level and # of questions.  AWESOME!

Monday, April 26, 2010

No New Thing Under the Sun

Rebekah made this pic
This evening I was driving, no, I was riding -- Rebekah was driving.  We were on our way to her cousin's piano recital, and I was noticing all the tons of cumulus clouds, and I thought, If Rebekah would take a picture, she wouldn't forget what to write down on her weather experiment later.  She's the kind to put it off until later, much later, like a few days! until she's totally forgotten what kinds of clouds were even there!  I even made a few pics as Rebekah was driving. 
Then I realized, I could put the pictures in a slideshow, and show the progression of different kinds of clouds leading up to precipitation!  Why didn't I think of this last week?  I've lost a week of our weather experiment!
Rebekah liked the idea.  Now she won't have to remember what clouds there were, lol.  Because she knows if it has to do with pictures and my blog, I'm on it.
So we were talking about science -- no, I was talking.  Rebekah was listening to Rush Limbaugh.  She's like her Daddy.  I told her one day we'll have two cars, and she can ride with her Daddy.  ha.  I don't dislike Rush.  I just like quiet.  I just like not having to talk above the radio. =)  She says since she's driving, she can control the radio.  I tried to tell her that's not what I'd told her.  I had said someday she would have her own car, and then she could control the radio.  Well, I let her listen until the commercials came on anyway.  =)
But back to the science.  I was talking about how we've been doing Apologia Physical Science (a favorite subject if you haven't realized that yet!), and we've spent weeks learning about atoms, molecules, properties of water, atmosphere, clouds, the way water behaves and more, and it's all come together now that we're studying the weather.  We've spent weeks learning about what God was able to do just like that!   
I warmed to my subject.  "And think of all those people whose job titles end with -ology, 'the study of' something.  How many millions of dollars have been spent discovering something God has known all along!  I mean, just think about it!  Everything we've learned, even about water's polarity -- clouds could not happen if not for that!"  We were turning up Cousin A's driveway, and I glanced over to see her bemused smile.
"You aren't really interested in this, are you."  It was a statement.  But I smiled as I said it.  =)
"Well, no, I mean it is interesting..."
"But not as much as it is to me!" I laughed.
We have fresh drinking water because of evaporation of fresh water from the salty ocean as a result of water's polarity, therefore cohesion.  God knew we needed the Coriolis effect of the wind so weather would be dispersed and varied.  It's all so complicated and works so smoothly together!  And never fails.  It works every time.  Sometimes violent, sometimes calm, but the process is certain. 
I love knowing how it works.  He allows us to endeavor figuring out the intricate ways and means. 
13 And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith. Ecclesiastes 1:13
And God knows how pitiful is my understanding of His great universe!
He gave us all this for our wonderment.  Isn't HE great!!!!
5 The sun also ariseth, and the sun goeth down, and hasteth to his place where he arose.
6 The wind goeth toward the south, and turneth about unto the north; it whirleth about continually, and the wind returneth again according to his circuits.
7 All the rivers run into the sea; yet the sea
is not full; unto the place from whence the rivers come, thither they return again.
8 All things
are full of labour; man cannot utter it: the eye is not satisfied with seeing, nor the ear filled with hearing. Nothing new is brought forth, and all old things are forgotten. 
 9 The thing that hath been, it is that which shall be; and that which is done is that which shall be done:  and there is no new thing under the sun.  Ecclesiastes 1:5-9

Rainbow Milk


Ok, I tried this.  It didn't do much at all.  Maybe for a few seconds.  I'll have to look it up and see if there is something the guy didn't mention, or maybe I need to use diff. dish soap.  That dish soap worked w/ the pepper experiment, tho. hmmm.  Exp. 4.5, Water's Cohesion.

9/1/11 I just found out this works best with whole milk!  Not Walmart's Great Value whole milk, bc they water it down.  (oh yeah, they really do.  You can taste a difference.)
The reason is the fat in the milk reacts to the soap.  You can watch Steve Spangler explain it here.

Science Experiment - Flower Structure

Well, I didn't think I'd be posting any science experiments today!  JohnDavid and Bethany had one in Switched on Schoolhouse about the parts of the flower.  We don't do a lot of the ones in SOS, since some of them I don't get the purpose (there probably is one!), or I don't have the supplies.  Usually on those we just watch the video. 
They had to look at the flower and answer questions about the different parts of the flower.  I had some African Violets that my Mom gave me over a year ago.



We located the different parts of the flower and noted that on an African Violet, the anthers (and filament) were NOT taller than the stigma, →         which meant this flower is not self- pollinating. (Transfer of pollen from an anther to a stigma of the same flower.)  


Then they were supposed to slice open the ovary to see the ovules.  The flower was too small to determine anything, so I found a pic online to show them. →


Then they labeled a blank flower.  Well, the flower wasn't blank!  Just the labels. ha.
←On this flower, the anthers ARE taller than the stigma.

We're learning about Gregor Mendel's Punnet Squares next.

Monday, October 13, 2008

celery experiment, written by JohnDavid, age 11

We filled a glass ¼ full of water, and put in 10 drops of blue food coloring. Then we stuck in a stalk of celery. After 15 minutes, we looked at the bottom of the stem and saw blue dots on the bottom. After 30 minutes, it was still the same.
The next day, the leaves were bluish. When we broke the celery in half, it was blue on the strings. The xylem was transporting the water that had the food coloring up to the leaves. And when the leaves made food, it would transport it down the phloem where it be stored in the cortex so when the plant needs it, it would have food. The leaves were stained around all the edges.
This proves that xylem, phloem, and the leaves play a very important part in helping the plant grow.

by: JohnDavid, typed by Mom


Thursday, October 9, 2008

Root Observation by JohnDavid, age 11


In this experiment, the kids put a paper towel in a baggie, and put water up to the bottom line. We put several staples along the second line and the corn seeds on the staples so they would not actually be in the water. The paper towel wicked the water up to the seeds. We taped the baggie in the kitchen window where there's lots of sun. This picture is actually after 2 weeks. But after several days, when the roots grew to about 4 cm, we were to observe them with a microscope. We did the best we could with a sort-of microscope thingy. Then the kids were to report on what they saw. Well, we could see the root hairs only a little. With a microscope, they would have seen that the root hairs are hollow. They drew and wrote about what they had learned about roots. Here's JohnDavid's page.Ha, ha! Some red shows thru from the other side of the page. :o)They had to learn all the parts of the root and what they did.
Click on the picture to make it big enough to read.

Tuesday, September 30, 2008

Seed Experiment by Bethany, age 11

In four clear, small jars, I put a wet and a dry seed in the dark, and a wet and a dry seed in the sunlight for two weeks. The seed that was wet in the dark tried to split open, but failed and got all gooey. Both of the dry seeds just dried out, but the wet one in the light grew a bean plant. The wet one started to split the second day, and grew roots the 5th.
I did not pay attention to the plant for a while, but by the 11th day it was 4 or 5 inches tall. The leaf on the bean plant was darker on the top than the bottom because chlorophyll is at the top and the sunlight made it turn more green. The top layer contains the chloroplasts, which has the chlorophyll.
God's leaf factory is created this way so plants can grow and live. Here is our plant.
Written by Bethany