Tuesday, April 7, 2009
Normally, gravity pulls blood to your legs. But in space the blood is not pulled to the ankles, legs and feet. It is free to flow wherever. A lot can go to the face.
We decided to try this out ourselves. You can see the differences after and before.
To do this lay down and elevate your feet and relax. Blood will flow from your legs to your head. Your eyes will be glassy. Notice no wrinkles when the face is full.
Astronauts also have other things happen to them in space. Muscle deteriation and bone deteriation can happen after just 6 days. It will take some time back on earth to get
everything back to normal, this is why astronauts need to exercise. If an astronaut doesn't exercise properly their bones could never recover.
Sunday, April 5, 2009
Friday, March 13, 2009
- Fill a quart jar about 1/8 full of warm water
- Light a candle and blow it out inside the jar to trap the smoke.
- Hurry and close the jar up with the lid, but make sure you have trapped some smoke
- Place some ice on top of the lid
- Wait for 3 minutes
- Slowly open the lid, you should see a cloud.
How it works:
The warm water rises as the cold air on top sinks. It condenses on the smoke, which is the condensation nuclei. It is impossible for condensation to take place with out condensation nuclei. This happens in our atmosphere. The condensation nuclei in our atmosphere is dust particles. Now you have a cloud.
Pretty cool or not? If not , it was still the coolest thing I learned in school today.