Wave webquest

1: waves go up but always back down to the original spot. 
2:Starts next to the hands and goes out.
3:The initial compact has the highest pitch and then its lower from there out. 


Exploring pitch and volume:


1: The wider the inside of the glass the lower the sounds.
2:Higher pitches have a shorter wave length. 
3:Higher frequency to higher pitches. 
4:More echo with lower pitches.
5:lower pitches come out after impact, higher pitches almost immediately.
6:High pitch sounds have a more steady downfall, low have more of a drop.

Reflection

The past couple days we had been working on a machine to flip a page.  While we would set up domino's, they were supposed to trigger a series of events that would then lead to a page being flipped.  however, each class someone would steal our supplies ruining our machine.  We did draw a blueprint, but that was useless after we talked it over and decided to just do a board game which is going to be and amazing game!

Rube Goldberg and simple machines

   Rube Goldberg was a Pulitzer Prize winning cartoonist, sculptor and author.

Reuben Lucius Goldberg (Rube Goldberg) was born in San Francisco on July 4, 1883. After graduating from the University of California Berkeley with a degree in engineering, Rube went on to work as an engineer for the City of San Francisco Water and Sewers Department. Best known for his “inventions”, Rube’s early years as an engineer informed his most acclaimed work. A Rube Goldberg contraption – an elaborate set of arms, wheels, gears, handles, cups and rods, put in motion by balls, canary cages, pails, boots, bathtubs, paddles and live animals – takes a simple task and makes it extraordinarily complicated. He had solutions for How To Get The Cotton Out Of An Aspirin Bottle, imagined a Self-Operating Napkin, and created a Simple Alarm Clock – to name just a few of his hilariously depicted drawings.

Journal Entry:

1: Number one is the pulley; it can reverse the direction of force by pulling ti in certain directions.  Also it can provide certain mechanical advantages.

2:  Inclined plane, Inclined planes make it easier to move and object against the force of gravity. 

3: The Lever, The lever helps lift heavier objects, with less force!

4: The wheel and axle.  A wheel and axle work by rotating together. They each make one revolution at the same time, but the linear speed of the wheel is greater than the speed of the axle, this makes it easier to rotate objects. 

5: Number 5 is the Wedge; the wedge is two back to back inclined planes.  This can be used to split things, like and ax would. 

6:  This is the most complicated out of them all.  The Archimedes Screw.  This can be used to transport water; it is sort of a spiral object that can transfer liquid objects from one side to the other through gravity.

Newtons laws assesment

1 ) What are the relationships between forces and motion?

Net force is required to change the motion of an object, or accelerate the object.  Often times forces are balanced so that  net force = 0, so motion does not change. Work is in the same units as energy, not force. Work is related to force by W = F*d*cos (theta) where F is the applied force, d is the distance through which the force has been applied, and theta is the angle (if any) between the force and the distance. For example if a 100 Newton vertical force is applied to lift an object to a table 5 meters above the starting point, 500 Newton*meters, or 500 joules, of work have been done

2) What are the variables that affect motion and force? 

When an object is in motion, the ground exerts a force on the object. This force slows the motion and is called friction. Objects also have inertia and momentum. Objects at rest have inertia. Objects in motion have both inertia and momentum.

3) How does Newton’s three laws describe the motion of a moving object?  First law: When viewed in an inertial reference frame, an object either remains at rest or continues to move at a constant velocity, unless acted upon by an external force.[2][3]

Second law: F = ma. The vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration vector a of the object.

Third law: When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.  All of these laws together make for the motion of a moving object, with different forces and such impacting the motion dramatically.

4) How does gravity impact objects?  Gravity impacts objects very dramatically to the pulling force from the sun and other objects floating about in space.  It will pull down the object and take it out of motion and then going on to at another force, possibly friction when it hits the ground.

Museum of Science

Engineering Design, Bobsled Activity

My bobsled was supposed to be fast.  I had a a material under my bobsled that didn't allow it to slide well so i should have removed that. Also i should have put all the weight in the front instead of the back.

Fantastic Forces

The fantastic forces was very interesting.  I liked learning how certain forces cancel out the laws of others. For example F=MA.  This also works with pulling a cloth out from under dishes or a glass.  The last thing i really enjoyed was when she put a pencil through wood, with enough force.  Also, the friction of air is enough to slow things down.  

Lightning show

Watching the lighting show i learned that lightning, while can be loud and bright., is actually silent and invisible.  We can see this by rubbing a balloon on someone with long hair.  Also, during a lighting storm, never just lay down on the ground.  Find a grounded place, either a car or a house.  To get rid of your electrical charge, touch someone with a negative charge to balance it out.  

Archimedian Excogitation

This was very interesting to see how one thing can lead to another.  While there was not really any introduction to this, it was still lots of fun to watch it play out and see how all the pool balls need each other in order to keep the next one going.  

Moon and tides connection

   Tides are caused by a gravitational tug-of-war between the sun, moon, and earth. All objects exert gravitational pull on each other. The closer they are, or the larger they are, the greater the pull. All of the planets exert some gravitational pull on the earth. However, the pull of the moon and sun are most noticeable because the moon is so close to us and the sun is so big. It takes the earth 365 days to revolve around the sun. As it revolves around the sun, it spins, or rotates on its axis once every 24 hours. At the same time, the moon revolves around the earth once every 29 days. The gravitational pull of the sun holds the earth in orbit, while the gravitational pull of the earth keeps the moon in orbit.As a result of this gravitational attraction between the earth and the moon, the side of the earth facing the moon is pulled towards it. Solid objects like the ground and buildings are not distorted as much as liquids like the ocean. A bulge of water occurs on the side of the earth facing the moon. As the earth rotates around the sun, centrifugal force causes an equal bulge of water on the opposite side of the earth. Water is pulled away from these two sides of the earth to form these bulges, or high tides. This leaves a depression, or low spot, in the oceans between. These are the areas of low tides.

Chemistry of life

The chemistry of life is necessary for us to survive; different compounds allow us to do different things.  Carbohydrates Proteins, Nucleic acids and fats are all very important to keep our body’s up and running and healthy, every day!  Also, Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen, carbon, hydrogen and nitrogen