http://www.sciencedaily.com/releases/2010/11/101121195429.htm
Jump ropes can be a lot of fun, and a great source of exersize. But there is a big deal of physics behind how it works. This article explains it. "Our main discovery is how the air-induced drag affects the shape of the rope and the work necessary to rotate it," says Princeton researcher Jeff Aristoff. "Aerodynamic forces cause the rope to bend in such a way that the total drag is reduced." (Leaves do this too when they bend out of the wind.) This deflection or twisting is most important in the middle of the rope and the least at the ends. If the rope is too light it might not clear the body of the jumper.
So the next time you are jump roping, think about the physics behind it, and it could not only be fun and exciting, but you can also learn about physics!!
Monday, November 22, 2010
Baby fat can lead to later health problems
http://www.sciencenews.org/view/generic/id/65981/title/Extra_weight_in_early_childhood_foretells_later_disease_risk
The article states that"Baby fat can be a harbinger of serious disease later on. Being overweight as a young child is a strong predictor of diabetes and heart disease risk in early adulthood, a new Dutch study finds."
This article is about how overweight children can lead to disease in later years. It is interesiing because even from such a young age, doctors can tell what health problems the children are going to have when they get older.
"Although increasing BMI was a strong risk factor for adult disease, being a big baby with an unvarying but high BMI was also associated with higher risk of metabolic syndrome in adulthood, de Kroon says. Weighing too much appears to be bad for adult health, whether a child starts big or merely gets that way during childhood. Moreover, she points out, “if a very thin child is becoming heavier, it may still have a very high risk [of adult disease] even if it never seems too fat.” So even parents of slim kids should watch that children don’t exceed the normal growth curve, she says."
The article states that"Baby fat can be a harbinger of serious disease later on. Being overweight as a young child is a strong predictor of diabetes and heart disease risk in early adulthood, a new Dutch study finds."
This article is about how overweight children can lead to disease in later years. It is interesiing because even from such a young age, doctors can tell what health problems the children are going to have when they get older.
"Although increasing BMI was a strong risk factor for adult disease, being a big baby with an unvarying but high BMI was also associated with higher risk of metabolic syndrome in adulthood, de Kroon says. Weighing too much appears to be bad for adult health, whether a child starts big or merely gets that way during childhood. Moreover, she points out, “if a very thin child is becoming heavier, it may still have a very high risk [of adult disease] even if it never seems too fat.” So even parents of slim kids should watch that children don’t exceed the normal growth curve, she says."
To infinity and beyond!
http://www.sciencenews.org/view/generic/id/65742/title/It_came_from_another_galaxy
This is an article about how a planet in the milky way is actually from another galaxy. Sara Seager of MIT, who was not part of the study. “The planet almost certainly formed during the time the star was in the other galaxy.” I think this is pretty interesting because for a long time we have thought one thing but now we know it is something else. This happens a lot in science and it is really cool to watch the changes.
This is an article about how a planet in the milky way is actually from another galaxy. Sara Seager of MIT, who was not part of the study. “The planet almost certainly formed during the time the star was in the other galaxy.” I think this is pretty interesting because for a long time we have thought one thing but now we know it is something else. This happens a lot in science and it is really cool to watch the changes.
Friday, November 19, 2010
Wanting to know more...
After doing a prezi about cosmology, I wanted to know more. This aritcle explains a lot about theoretical cosmology.
http://astro.berkeley.edu/~jcohn/tcosmo.html
http://astro.berkeley.edu/~jcohn/tcosmo.html
The second best show ever explains physics...
http://www.youtube.com/watch?v=AEIn3T6nDAo
This is a scene from The Big Bang Theory and it explains physics.
This is a scene from The Big Bang Theory and it explains physics.
Monday, November 15, 2010
Thursday, November 4, 2010
Wednesday, November 3, 2010
Making a prezi
Right now, our class is working on making prezis. We are making a presentaion about evolution and creationism. The prezi is a really cool way to make a presention. It makes things look super cool and a great way to learn about a subject!
You can make a prezi about anything you want!!
http://prezi.com/index/
You can make a prezi about anything you want!!
http://prezi.com/index/
Optical Illusions
http://www.youtube.com/watch?v=y2-EB4PGUs8
This is a video on a bunch of different optical illusions.
Optical illusions sometimes freak me out! These are really cool though! CHEAK IT OUTTT!
This is a video on a bunch of different optical illusions.
Optical illusions sometimes freak me out! These are really cool though! CHEAK IT OUTTT!
MIND GAMES!
http://www.youtube.com/watch?v=Hc1WXBtum2o&feature=related
This is a video someone made and theyknow what card you are pointing at. I did it and they knew that I was on four. SoOOOooo CraAAaazZZYyyyyYY
This is a video someone made and theyknow what card you are pointing at. I did it and they knew that I was on four. SoOOOooo CraAAaazZZYyyyyYY
child psychology experiment
http://www.youtube.com/watch?v=y9DxgM0vpsA&feature=related
This is a video about a child psychology test. An adult had two of the same sized cups of water and one empty tall glass. The child understood that the water was the same amount when they were in the small glasses, but then once the lady poured the water into the tall glass he immedietly thought that the tall glass now had more water. The little boy could not understand that the amount of water did not change.
This is a video about a child psychology test. An adult had two of the same sized cups of water and one empty tall glass. The child understood that the water was the same amount when they were in the small glasses, but then once the lady poured the water into the tall glass he immedietly thought that the tall glass now had more water. The little boy could not understand that the amount of water did not change.
The famous diet coke and mento experiement
http://www.youtube.com/watch?v=pkAvFwpiOGA
Everyone loves the great diet coke and mento experiement. This is a video that goes through each step and explains why this reaction happens.
Everyone loves the great diet coke and mento experiement. This is a video that goes through each step and explains why this reaction happens.
how a torando is formed
http://www.youtube.com/watch?v=7E2hNNrU-sU&feature=related
Living in Kansas, and becuase I am kind of facinated by cool thunderstorms, I wanted to share a video on how tornadoes are formed. This is a video about a weather man who is informing everyone about how a tornado is formed for the increase and decreases in weather.
pretty cool, huh??
Living in Kansas, and becuase I am kind of facinated by cool thunderstorms, I wanted to share a video on how tornadoes are formed. This is a video about a weather man who is informing everyone about how a tornado is formed for the increase and decreases in weather.
pretty cool, huh??
evolution
http://www.youtube.com/watch?v=faRlFsYmkeY
This is a video about evolution. Right now, our class is working on making presentations about evolution vs creationism. Even though this is a cartoon video, I think it does a really good job of showing what evolution is.
This is a video about evolution. Right now, our class is working on making presentations about evolution vs creationism. Even though this is a cartoon video, I think it does a really good job of showing what evolution is.
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