This week Jenny and I have looked up stores that could have materials we need. We have looked at Walmart, 99 cents store, and Home Depot. For our project we would need pots to place the plants in, different types of fertilizer, food and water, and most importantly, the seeds. We have decided to buy sunflower seeds and grow them in differetn conditions. So far, we need to buy the supplies. Our next step is to buy the supplies and plant the seeds.
Friday, March 15, 2013
Friday, February 22, 2013
20% Project proposal
1. Jenny and I want to plant plants.
2. We want to do it to experiment how the lives of plants can be altered with different resources
3. Some of the resources will be gettin different temperatures for the plant, different kinds of food, and fertilizers, and different types of seeds. The information we will need to research is how to be good gardeners.
4. 1 to two months
2. We want to do it to experiment how the lives of plants can be altered with different resources
3. Some of the resources will be gettin different temperatures for the plant, different kinds of food, and fertilizers, and different types of seeds. The information we will need to research is how to be good gardeners.
4. 1 to two months
Tuesday, January 15, 2013
2-L Rocket Eggmission The Soda-Bottle Rocket Egg Launching Mission
1. How does the water help the rocket at all? Will more or less water affect the distance of the rocket? Why should only 80 psi be used? This project will help me answer these questions when I see the rockets in action.
2. For Jenny and I's rocket, it consisted of cutting a cardboard box into small trapezoids and we cut one of the two plastic 1L soda bottles in half. We then proceeded to equally distribute the trapezoidal pieces around the bottle and duct tape them. Then we filled the bottom half of the bottle that was cut with the material we used to protect the egg and duct taped it to secure it. Then presto! We were done with our rocket!
3. The bottom half our the rocket was filled with 850 mL of water for all trials and was clamped on the launch pad with the hose connected to the bike pump. The bike pump was used to fill the bottom portion with 80 psi of air pressure. After the rocket was stable, the cord was pulled from the hook and the rocket was fired with the water going backwards while the rocket flew forward. Gravity took over once it was mid-flight, and it began to take a nosedive. When the rocket reached the peak of its speed, the acceleration excelled. In its impact, the top of the rocket collided the ground and landed with a thump. The wings of the rocket were constructed to be aerodynamic and efficient, and the bubble wrap acted as a cushion and as a weight.
4. For 2 of the 3 trials, we used bubble wrap coiled around the egg to give it a cushion perspective so the impact is absorbed and the egg would be safe and sound. For the final trial, we decided to add saran wrap and cotton balls in addition to the bubble wrap. All the materials were supposed to act as a pillow so the egg would barely bounce on impact and not crack. The soft and cushion-y supplies were designed to extend the period of time where the impact took place so the collision effect would be minimized.
5. For the first 2 trials the rocket flew 39 meters and in the third 48 meters. The egg only made it through the 1st trial and didn't survive the last one. In all trials the rocket was launched at a 45 degree angle. The rocket was successful in completing the 30 meter requirement but it failed on securing the egg.
6. After watching rockets in flight, I concluded that there can be a perfectly build project with everything balanced and coordinated but it can still fail. From observing the sizes in length for the rocket in general and the wings, balance is everything. It can determine the distance and or impact at the end of flight. I was confused at the beginning how the water helped the rocket at all but from watching I saw that the pressure pumped inside pushed the water out which in turn launched the rocket. I also learned what materials give better or worse results. For example, scotch tapping the wings and rocket together never work because everything will break off. In addition, putting too much weight on one side of the rocket and not the other affects the rocket by either weighing it down or having it hit with a harder thump. Rockets can be a hit or miss.
2. For Jenny and I's rocket, it consisted of cutting a cardboard box into small trapezoids and we cut one of the two plastic 1L soda bottles in half. We then proceeded to equally distribute the trapezoidal pieces around the bottle and duct tape them. Then we filled the bottom half of the bottle that was cut with the material we used to protect the egg and duct taped it to secure it. Then presto! We were done with our rocket!
3. The bottom half our the rocket was filled with 850 mL of water for all trials and was clamped on the launch pad with the hose connected to the bike pump. The bike pump was used to fill the bottom portion with 80 psi of air pressure. After the rocket was stable, the cord was pulled from the hook and the rocket was fired with the water going backwards while the rocket flew forward. Gravity took over once it was mid-flight, and it began to take a nosedive. When the rocket reached the peak of its speed, the acceleration excelled. In its impact, the top of the rocket collided the ground and landed with a thump. The wings of the rocket were constructed to be aerodynamic and efficient, and the bubble wrap acted as a cushion and as a weight.
4. For 2 of the 3 trials, we used bubble wrap coiled around the egg to give it a cushion perspective so the impact is absorbed and the egg would be safe and sound. For the final trial, we decided to add saran wrap and cotton balls in addition to the bubble wrap. All the materials were supposed to act as a pillow so the egg would barely bounce on impact and not crack. The soft and cushion-y supplies were designed to extend the period of time where the impact took place so the collision effect would be minimized.
5. For the first 2 trials the rocket flew 39 meters and in the third 48 meters. The egg only made it through the 1st trial and didn't survive the last one. In all trials the rocket was launched at a 45 degree angle. The rocket was successful in completing the 30 meter requirement but it failed on securing the egg.
Friday, November 16, 2012
Dynamics PBM Hypothesis Post
I believe the small tennis ball made a dramatic bounce on top of the larger ball because the surface was smaller than the bigger ball (basketball). Also it's momentum increased it's height because it bounced off the force of the basketball and the flat surface.
Monday, October 29, 2012
Dynamics PBM Final Post
Question 1: Why does letting a small ball drop on top of a larger ball make such a dramatic difference in bounce?
Objectives:
1. The Physics Standards that relate to this problem are:
d.
Students know
that when one object exerts a force on a second object, the second object always exerts a force of equal magnitude and in the opposite direction (Newton's third law).
Objectives:
1. The Physics Standards that relate to this problem are:
d.
Students know
that when one object exerts a force on a second object, the second object always exerts a force of equal magnitude and in the opposite direction (Newton's third law).
e.
Students know the relationship between the universal law of gravitation and the effect of gravity on an object at the surface of Earth.
f.
Students know applying a force to an object perpendicular to the direction of its motion causes the object to change direction but not speed (e.g., Earth's gravitational force causes a satellite in a circular orbit to change direction but not speed).
h. *
Students know Newton's laws are not exact but provide very good approximations unless an object is moving close to the speed of light or is small enough that quantum effects are important.
Why does letting a small ball drop on top
of a larger ball make such a dramatic difference in bounce?
When a small ball
is dropped on a larger ball, the smaller ball bounces dramatically higher than as
the ball being dropped normally. This is the case because when both balls are
dropped, the momentum of the larger ball is transferred to the smaller ball
hence the increase of height. In addition, the smaller ball bounced higher
because the force point caused it to go the opposite direction with the same
magnitude at contact, resulting in the fast impact. With the help of inertia
the objects stayed at rest and after the demonstration, the balls slowly return
to the state of rest. The amount of force placed on the balls depends on how
much mass and weight is in them. A bigger ball with more mass will make the
smaller ball bounce higher than a small ball of the same weight with different
mass. The one with more mass will work better with height reach because with
more mass, the more force the ball will act on it.
Lab: Get balls with different masses and
weight and compare the distance of the ball that goes up
Monday, September 24, 2012
Free Falling
http://www.youtube.com/watch?v=uQITWbAaDx0
I chose this video because of the content and because the video kept me on the edge of my seat the whole time I watched it. The music was very suspenseful and I never knew what was going to happen next. It was better than others because it was very interesting how it was filmed and one wonders how long it took to make it and how much dedication it took the person to dive into a deep dark hole. I thought the person was going to be sucked in by something and never come out. If I were to make a video I would want to record myself bungee jumping with those cool HD video cameras and I would have dubstep playing in the background so I would feel like I am in one of those commercials.
I chose this video because of the content and because the video kept me on the edge of my seat the whole time I watched it. The music was very suspenseful and I never knew what was going to happen next. It was better than others because it was very interesting how it was filmed and one wonders how long it took to make it and how much dedication it took the person to dive into a deep dark hole. I thought the person was going to be sucked in by something and never come out. If I were to make a video I would want to record myself bungee jumping with those cool HD video cameras and I would have dubstep playing in the background so I would feel like I am in one of those commercials.
Tuesday, September 4, 2012
Spaghetti Tower!
Group Analysis:
1 & 2.
1 & 2.
3. 50 cms
4. What I dislike about my design is that it is a complicated structure and it takes most of our money to build. What I like is that it is unique and picturesque.
5. The biggest challenge my team mates and I faced were tryingt to balance all the spaghetti sticks together and distributing all the marshmallows evenly. We kind of overcame it by putting our heads together and thinking of the most convenient ways to balance and measure everything.
6. If I had the opportunity to re-design my tower, I would make it less complicated. I would make a simpler design that gets the job done.
Self Analysis:
1. I personally hated this prodject so much. I get frustrated easily and would want to burst everytime the design wouldn't stand. I wanted to give up the second we started. I started to like it when little by little, the piece would come together and it relieved my stress.
2. The structure of our tower is some-what similar to those around the room. What makes ours different is that it is more triangular shaped than those of others who is either square or rectangular shaped.
3. I fI could add another material I would add super glue. Super glue is an amazing adhesive and our group would have no problem with the sticks sticking!
4. My contribution to the group was not just one role. I did a little bit of all the roles. I helped do the math, get the materials, and helped construct the tower.
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