Proficiencies
#1 Jack W, Nick K, and me have finished our Rube Goldberg. At the beginning of our Rube Goldberg we have a car that goes down a track from the top of a door. Next we have that car hit a ball which rolls down a step and hits some dominoes. After it goes through the dominoes, it hits a DS case which hits a DVD case, then hits a movie case which then pushes a car forward and shoots its off and hits a drum.
Newton's First Law applies to the real world because if you watch a car crash you will see that the car that is going to crah into the other car is the car that is in motion, and that it will disrupt the car that is not moving which creates the the first of Newton's laws.
Newton's Second Law applies to the real world because if you put a box on top of a table you could push it, it shows that if you increase the net force the acceleration will increase too. but then if you decrease the net force the acceleration will decrease also.
Newton's Third law can be applied to the real world when you look at people that are playing tug a war. I say this because if you were to pull the rope it's pulling back but then, if you move back farther you we will see that the rope is pushing back on you instead which, helps you pull the rope
http://physics.about.com/od/classicalmechanics/a/lawsofmotion_4.htm
#2
#4
#5
Problem: Does a car push a block of wood farther with more weight?
Hypothesis: I think that when you add more weight to the car it will push the block of wood farther. I say this because when you put more weight on the car it will accelerate fast down a ramp which will then push the block farther.
Materials:
1. Block of wood
2. Toy car
3. 1 oz.
4. Ramp
5. Ruler
6. 1 ½ oz.
7. Work place
8. Some where to put the data
Procedure:
1. Gather all materials
2. Create ramp
3. Put ruler at the end of ramp
4. Put block of wood at the end too
5. Send car down ramp and write down how far the block went
6. Repeat steps 3-5 two more times
7. Record data
8. Now put 1 oz. on the car now and repeat steps 3-5 two more times
9. Record data
10. Put 1 ½ oz. on car and send car down ramp
11. Repeat steps 3-5 two more times
12. Record data
13. Come to conclusion
14. Clean up
Variables:
CV: type of car, ramp, block
DV: weight of car
IV: If you change the weight of the car will it make the block go farther
Control: The less the amount of weight the farther the block went.
Control: The less the amount of weight the farther the block went.
Conclusion: My question was, does a car push a block of wood farther with more weight? My hypothesis was that the car will go farther with more weight, because the gravity will pull the car down the ramp faster which will hit the block harder making it go farther. This is an example of momentum which is the force or speed of a movement.
#2
Problem: Does a ball roll farther on grass, dirt, or tile?
Hypothesis: I think that the ball will role father on tile because it’s a smooth surface and on a dirt surface has bumps which will slow the ball down.
Materials:
· Ball
· Books
· Ramp
· Dirt surface
· Tile surface
· Grass surface
· Timer
· Recorder
Procured:
1. Gather all materials
2. Create ramp
3. Send the ball down onto tile
4. Time the ball once it starts to move and then stop it when it stops
5. Record data
6. Repeat steps 3-5 three times
7. Now send the ball down onto dirt
8. Time the ball from when it starts to when it stops
9. Record data
10. Repeat steps 7-9 three times
11. Send the ball down onto grass
12. Start the timer when the ball is pushed and stop when the ball is not moving
13. Record data
14. Make graph
15. Come to conclusion
16. Clean up
Variables:
CV- ball, ramp
IV- the types of surface that you use
DV- how far the ball rolls
Friction and Gravity project | ||||
tile | Dirt | grass | ||
trial 1 | 22.11 | 4.38 | 1.34 | |
trial 2 | 14.16 | 4.07 | 1.03 | |
trial 3 | 26.9 | 3.56 | 1.43 | |
Observation: As you can see you can tell that the tile was the surface that let the ball roll the farthest. After we tried the first time it didn’t and we did that to find out if the experiment would actually work or not. We had to go to some measures to find places that would make the experiment as possible, like the grass and dirt we had to go outside and find an area that was flat enough. The tile that used was in the hall where it’s flat.
Conclusion: I found out that my hypothesis was correct. The question was does a ball roll farther on title, grass or dirt? My hypothesis said that the ball will roll farther on title because dirt and grass has bumps which will make the ball slow down and not go strait. The gravity is the force that’s pulling the ball down the ramp and on to the surface that we put under it. Since the ball doesn’t roll when it’s on the ramp it starts to roll when it’s rolled on to the surface.
#3
Problem: Does a toy car accelerate faster on plastic, tin foil, or wax paper?
Hypothesis: I think that the car will accelerate faster on the tin foil because tin foil is really smooth and not rough like the plastic.
Materials:
Ø Tin foil
Ø Wax paper
Ø Toy car
Ø Track
Ø Three timers
Ø Inclined plane
Ø tape
Procured:
1. Gather all materials
2. Step up track so it’s 9 feet long
3. Mark 3 feet from both ends in
4. Put car on top of the track
5. Start timer when car starts to move and then when it passes 3 feet
6. At the same time start another timer from start to end
7. Also start a timer at the last 3 feet
8. Find the acceleration rate and record
9. Repeat steps 4-9 two more times
10. Put tin foil on track
11. Measure out 3 feet from the start and from the end
12. Put car on top of the track and start both timers and stop one at 3 feet and at the end
13. Start the last timer at the last 3 feet
14. Find acceleration rate
15. Repeat steps 11-14 two more times
16. Take off foil and put wax paper on
17. Put car on top
18. Start timers stop when at 3 feet and at the end
19. Start timer when at 3 feet
20. Find acceleration rate
21. Repeat steps 17-20 two more times
22. Find the type of surface that the car accelerates the fastest
23. Clean up
Variables:
CV- timers, type of car, inclined plane, distanced timed and total distance
IV-type of surface the car goes on
DV- the acceleration rate
Control: The wax paper is slippery so it makes it glide across the wax paper.
Speed and Acceleration | |||
Plastic | Foil | Wax Paper | |
Trial 1 | 0.2 | 0.1 | 0.1 |
Trail 2 | 0.2 | 0.3 | 0.3 |
Trail 3 | 0.2 | 0.2 | 0.4 |
**All measurements in feet/second** | |||
Observations: I found out that the wax paper let the toy car accelerate the fastest because it was smooth and slippery. I had to test the experiment a couple of times to make sure that the experiment was ok to do. I also had some trouble with putting the wax paper and tin foil because you had to put it in a direction that won’t stop the car which would make the experiment wrong.
Conclusion: My problem was Does a toy car accelerated faster on tin foil, plastic, or wax paper? My hypothesis was incorrect because I thought that the toy car would accelerate faster on tin foil because I thought that the foil was going to be smooth, but it was bumpy which made the car slow down a lot or maybe stopping it. Acceleration is the increase of velocity over a period of time which is when the car is let go on top of the ramp and the increases its speed all the way down the track.
#4
To get the Rube Goldberg started we put a car into a pulley system which then brought a car up that has a wheel and axle up to the top of the track and then sends it down. Once the car rolls down the track its kinetic energy is transferred into a ball that’s sitting at the bottom of the track. Now that the ball is rolling it runs into a chain of dominos which represents Newton’s first law of motion comes into effect because every object at rest will stay at rest unless acted on by an unbalanced force. Since the dominos are moving they hit a toy car that will be forced into a machine that will push the car forcing it off a jump, this is another example of Newton’s first law of motion. After the car goes off a jump it hit a drum that is angled to hit a chain of dominos which is Newton’s first law. At the end of the dominos there’s a wind up car that goes on a tack and then goes through a toy batman and then goes around a loop de loop and then hits the batman in the face.
#5
Kyle Dethloff
11/16/10
Science
Wind
When you walk outside and you look up in to the sky you feel a breeze. That breeze we could use to create energy for our houses and other electric needs. If we use alternate forms of energy won’t have to pollute the air that we breathe. We can easily get this type of energy because we don’t have to produce the wind we just have to put our windmills out and wait until the wind picks up, and then we have electricity. This can be a really good thing because we will be able to live in a really clean atmosphere.
In order to make the air that we breathe clean we will have to use energy forms that will keep are air clean. And the one that would make me most happy would be wind energy because its clean and it doesn’t make the air bad. Another reason is that we don’t have to spin it we just have to put it out in the wind and wait for the wind. But the bad side is that it’s a really expensive to put it together and then keep it running but then again it can save you tons of money on your energy bill. In 2005, 1% of the electricity was produced by wind energy, that a lot energy. United States is 3rd in making the most wind energy with Germany leading the way with over 8750 MW in one day. Wind energy isn’t on a global scale yet but in a few years it’s going to become a really big hit because we won’t have to use up are fossil fuel.
Did you that wind energy is the fastest grow type of energy? This might be because we can put the windmills on over 50% of the land on North America. If we get at least two windmills around here in Pewaukee we could probably create enough power to power all of Pewaukee. And most of the generated energy is used to create electricity. Wind energy is very competitive when compared to other energy sources because it’s pollution free. To create the energy the windmills have generator on the top which is connected to the blades which are designed to catch the wind.
Now that you have read my papers on how wind energy can change how we make are energy, what do you think would be the best type of energy? To make this energy possible we wouldn’t be able to do it without the farms when they wanted to grind grain into flour.
In order to make the air that we breathe clean we will have to use energy forms that will keep are air clean. And the one that would make me most happy would be wind energy because its clean and it doesn’t make the air bad. Another reason is that we don’t have to spin it we just have to put it out in the wind and wait for the wind. But the bad side is that it’s a really expensive to put it together and then keep it running but then again it can save you tons of money on your energy bill. In 2005, 1% of the electricity was produced by wind energy, that a lot energy. United States is 3rd in making the most wind energy with Germany leading the way with over 8750 MW in one day. Wind energy isn’t on a global scale yet but in a few years it’s going to become a really big hit because we won’t have to use up are fossil fuel.
Did you that wind energy is the fastest grow type of energy? This might be because we can put the windmills on over 50% of the land on North America. If we get at least two windmills around here in Pewaukee we could probably create enough power to power all of Pewaukee. And most of the generated energy is used to create electricity. Wind energy is very competitive when compared to other energy sources because it’s pollution free. To create the energy the windmills have generator on the top which is connected to the blades which are designed to catch the wind.
Now that you have read my papers on how wind energy can change how we make are energy, what do you think would be the best type of energy? To make this energy possible we wouldn’t be able to do it without the farms when they wanted to grind grain into flour.
http://interestingenergyfacts.blogspot.com/2008/03/wind-energy-facts.html
http://www.energyrefuge.com/archives/wind-energy-facts.htm
