Science+1

S cien ce 1   media type="custom" key="2068856"Welcome to your class wiki! In this space, it is my hope that we will be able to creatively share with others what we are learning in class. This space is yours to collectively and collaboratively communicate your knowledge and understanding of scientific concepts.

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media type="custom" key="537561" Earlier this month we did a chromatography lab similar to this one. media type="custom" key="518179"

2-19-08 we have been studying about mixtures and how the subtances have to be seperated and how to seperate them using different ways like melting ice with salt and seperating sand and sugar using water to sink the sand and then the sugar would dissolve. We also learned the difference between mixtures and substances. a mixture is when something is mixed together and a subtance is something that is one thing. another way to sperate a mixures are putting iron in in water and then using a megatitc to pick up the fillings. there are two types of mixtures they are homogens and hertogenes. You can seperate To find the total concentration for a mixture, use the formula: x=volume of solute/volume total multiplied by 100. To find the total of mass the formula:x=mass of solute/mass total multiplied by 100. You find each by multiplying the denomonater by itself and the other side. Then you multply by .100 or by 100%. Afteryou do all of that, you should get the answer. Solutes lower the freezing point of water, and they raise the boiling point. 2-21-08 rotation - Art Connection - Marbled Paper media type="custom" key="525163"

3-10-08 Calculating Average Speed To calculate the average speed, you divide the distance by the time to get the average speed. 3/11/08 Car + Marble Experiment Today, we did our own experiment to caculate the speed of a match-box car and a marble. We concluded that the marble has a greater speed than the car. We also learned to keep our data constant by eliminating variables. 3-18-08 We discovered that the amount of momentum that goes into something also comes out. for example: if you have 4 marbles on one side and 3 on the other the side with 3 marbles when collided with the side of 4 marbles leaves with 4 marbles, and the side of 4 marbles leaves with 3 marbles.

We experimented to learn about momentum. We discovered that the amount of energy going into a collision is released out of it, which is stated in the Law of Conservativation of Momentum, but friction, heat from the collision, and gravity will reduce the amount of energy. We also experimented with the idea of Newton's Cradle, by sending two marbles into a collision, sending two marbles out. You can also send two marbles with the same momentum at each other to stop them directly. media type="custom" key="604205"

3-27-08 Today we took a test about motion. We had to know how to calculate acceleration, average speed, and momentum. Now, we are creating videos for a wikispace, so check back often.

 4-16-08

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We are now starting to learn about energy. This unit we are only learning about mechanical energy. So far we have learned of two types of mechanical energy: 1. Kinetic 2. Potential

4-24-08

Over the past few days we have working on a new project. We are building ballon powered cars out of straws, lids from cups, stryofoam meat plates, skewers, balloons, q-cards, and anything that we bring in from home. The only things that we are not alowed to use are tires from toy cars, and any kind of gas or fire. To go along with this project we also have to make a poster about Newton's three laws of motion.



4-25-08 Today we tested our balloon-powered cars. Some of the problems groups faced were too much mass, crooked wheels, and balloons too big. The farthest distance by a car was 12.5 meters. This lesson taught us about Newton's Laws and other lessons dealing with motion.

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