Me: What are cells
Dave: Yeah, I know what cells are! They're very small and they're in your body.
Dave: Oh. If you want more information, you're asking the wrong person because that's all I know.
Me: Okay I'll tell you what they are. Cells are very small and in your body as you as you said, but they also perform functions such as creating proteins, and the proteins do small favors for our body. For example,white blood cells create proteins called antibodies, which do the favor of killing germs inside the body.
Sunday, January 6, 2013
Water is the driving force of all nature -- Leonardo Da Vinci
Here are some things I learned about aquatic systems:
- Wetlands: A Wetland is any land that is wet for at least 5-7 days commonly called swamp or marsh.
- A canal that curves is better than one that runs straight. If it curves, then the speed of water slows down. This reduces soil erosion.
- We need to plant vegetation around the waterways to reduce soil erosion.
- Water cycle: The ones I was already familiar with were: Evaporation, Condensation, Precipitation and Surface Runoff. The new ones I learned were: Percolation, Transpiration, Infiltration and Ground water.
I also learned about levees. Levees are man- made hills that stretch at least 1 mile and prevent floods from happening. But levees can also break down. For example, in 1992, there was a lot of snow in Montana. This snow melted and flowed down the rivers and piled up in the Missouri river. Along the way, the snow melted and became water. There was so much water that the water broke through the levee and was a huge disaster in St. Louis. This was called the flood of 1993.
The probability of a levee breaking is given a number. The probability that a 500 year levee will break increases by 0.2% every year. Therefore, in 300 years, the probability of it breaking is 60%. A hundred year levee’s probability of breaking increases by 1% every year. Therefore, a 500 year levee prevents more floods than a 100 year levee.
Friday, December 28, 2012
Grade 3 ProjectThe problem is that cars are speeding around the sharp corner on Summit Glen Court in Fenton, Missouri. This could hurt kids. So we sent a recommendation to MODOT (Missouri Department of Transportation) who replied back to us. This was part of my City Planning course in 3rd Grade.
A bat is beautifully soft and silky; I do not know any creature that is pleasanter to the touch or is more grateful for caressings, if offered in the right spirit. - Mark Twain
The body of a batA bat has pokey ears, gray fur, and big umbrella-like wings. It has little feet, pink mouth, sharp teeth.
What bats eat and who eats it
Bats eat berries, fruits, insects, fish and flowers. The adaptations that they use are sharp teeth, and echolocation. A bat uses its wings as a net to scoop insects into its mouth. Its predators are snakes, hawks, owls, eagles, and raccoon's. It protects itself by using its sharp teeth and flying fast and high.
Life of a Bat
Bats grow up so fast! In 2 months a bat becomes an adult size. The mother bat carries her babies for the first few days of life. They leave their mom in one month. Did you know that they live in a quiet cave? Bats live more than 20 years! They live in trees, caves and all over the world except Antarctica.