The Flash

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The Flash

Sound

How we hear

Connection: Also, adding onto the wave equation connection. As the sound travels towards the person, it goes through their ear canal. The sound then hits the eardrum of the person. The sound vibrates the eardrum, which passes the vibration to the ear bones. It finally goes to the cochlea, this turns the vibration into a electrical signal that is then sent to the brain.

Resources: Notebook (Pg. 30, 31, 32)

Evidence: For sound, when you have earbuds in, they make a pressure wave that moves your eardrum making you hear music.

Evidence: Sound waves are made up of vibrations that correlates into our ears that allows us to hear the sound. We hear this through our cochlea, which allows us to hear sounds because it rotates the received vibrations and turns it into the nerve impulses for the brain.

Wave equation

Connection: If the Flash was running at a vigorous speed, and was to speak the pitch of his voice would change. If his voice was about 100 cycles per second, then if someone was able to hear his sound they would hear it at about 166 cycles per second. This connects to the wave equation, because as the sound travels, the frequency gets higher and also changes the wavelength of the sound.

Resources: Notebook (Pg. 32, 31)

Evidence: When talking on the phone, your voice makes a sound wave, which can move the diaphragm in your phone to an electrical wave. This is then sent to the other person phone, and is sent out through another diaphragm in the other person’s phone. This allows us to connect and talk to other people in different areas.

Evidence: A quitar works when the strings of the quitar are hit, which creates a natural frequency. The amplitude and pitch of the quitar are affected by the tension of the spring. This is affected by the density, size, and length of the string. This also affects the wavelength and frequency of the guitar. Also, when the string is hit, it vibrates the quitar, which makes a resonance.

Evidence: The wavelength equation is speed = wavelength x frequency. Same with the relationship between mass, force, and acceleration, the wavelength equation is the same. You can find speed, wavelength, or frequency, if you know at least two of the three. For example, if you know the speed and frequency, then you can easily find the wavelength by Speed / frequency = wavelength. This also means that the wavelength and frequency are inversely proportional

Is a mechanical wave

Connection: Another connection to the flash is sound. When the Flash runs, the space behind him is turned into a vacuum, and is then filled with air. Connecting this to physics, sound cannot travel through a vacuum. So when sound is traveling, it cannot travel through the space behind the Flash, when he runs, because sound cannot travel through a vacuum.

Resources:Resources: Notebook (Pg. 32, 30)

Evidence: A sound wave is caused by a vibration between objects. As sound travels, the particles in the air compress and expand.

Evidence: An example of a mechanical wave can be represented by a sound wave. Sound is also a longitudinal wave that travels at about 340 meters per second in the air. Sound can also be reflected, refracted, and diffracted. For example, when you hear an echo, the sound is being reflected off of an object, which is why you hear the sound again. Refraction of sound can be shown by sound going through a wall. It is muffled and harder to hear.

Evidence: A mechanical wave is any wave that travels through a medium, such as solids liquids and gases. Mechanical waves travel faster through denser mediums.

Forces and Motion

What are the causes and effects of friction?

Connection: As the Flash runs he moves his feet in the opposite direction he wants to move. As he does this the ground gives an equal force back on his foot. If there was no friction between the ground and the boots of the Flash, then the Flash would never be able to run anywhere. One of the Flash's enemies, Captain Cold, would use his freeze ray to freeze the ground. As the Flash would run over this it would make him unable to get traction. Thus making his speed useless.

Resources: Notebook (Pg. 18), The Physics of Superheroes (Pg. 58-59)

Evidence: A real life example of this, is when it is cold outside, and you rub your hands together. The rubbing of your hands makes friction, which also makes heat. So during those cold days, your hands can stay warm.

Evidence: In a mousetrap car, if you have friction between the string of your car and the body; it will slow your car down. This is because your potential energy and kinetic energy of your car will turn to thermal energy. Instead of kinetic and potential energy, which makes your car move and travel farther.

Evidence: Friction is caused by 2 objects rubbing up against each other, and the effects of friction is the loss of speed and the loss of potential and kinetic energy.

How does potential energy become kinetic energy?

Connection: When the Flash is running he also hops and has a bit of airtime. When this happens, as the Flash is at the highest he will jump he has a lot of potential energy, due to his position in the air. This is then converted to kinetic energy as he gets closer and closer to the ground. During all of this the total energy stays the same. This process continues as the Flash runs.

Resources: Notebook (Pg. !8, 17)

Evidence: Another example of this is when I went cliff jumping. As I was on top of the cliff, I had a lot of potential energy due to my position on the cliff. As I jumped, the potential energy converted to kinetic energy because of my downward motion toward the water.

Evidence: For example, when a person is on top of a building, the person’s potential energy is at its highest, due to gravity. If the person unlikely happened to fall, the potential energy would be converted to kinetic energy, for the person loses potential energy and is being used for that person to fall.

Evidence: During the Energy Skate Park activity, as the skater was on top of the ramp the potential energy was at its highest, while the kinetic energy was at its lowest. On the other hand as the skater was at the bottom of the ramp, the potential energy was at its lowest and the kinetic energy was at its highest. All the while, the total energy stayed the same throughout the skater going back and forth.

How is momentum conserved?

Connection: Also, when the Flash starts to slow down or starts to run, he has a change in momentum. The equation for momentum can be demonstrated by F x t = m x change in V. When he slows down his change in velocity is negative. This also helps us to discover the impulse of the Flash. This is how the Flash conserves momentum.

Resources: Notebook (Pg. 16, 15)

Evidence: To find the change in momentum and impulse is fairly easy. The equation is represented by F x t = m x change in V. The equation has six relationships in it. Them being that impulse = momentum change, impulse = force x time, momentum change = mass x velocity change, force and time are inversely proportional, mass and force are directly proportional, and finally that mass and velocity change are inversely proportional.

Evidence: An example of this was when Spiderman brought Gwen Stacy to a halt. As Gwen Stacy was falling to the ground, she was going at 95 mph. When Spider Man used his web to catch Gwen, it brought her to a halt, which concluded in her breaking her neck. This is because when someone jumps off of a building, the go from a high speed to 0, as they hit the ground. Just like Gwen, she went from a high velocity to 0, which was like hitting ground.

Evidence: In a collision, an object experiences a force for a given amount of time, which results in the mass undergoing a change in velocity. This results in a momentum change in that object.

What is the relationship between mass, force, and acceleration?

Connection: Connecting also to friction, as the Flash runs, he pushes against the ground to propel him with a forward motion. According to Newton’s Third Law, for every motion, there is an equal and opposite reaction. This equal and opposite reaction come with the ground. The ground pushes back on the Flashes foot, while it pushes your body forward.

Resources: Notebook (Pg. 8, 10, 12), The Physics of Superheroes (Pg. 58, 59)

Evidence: As you spin a hard boiled egg, you wanna try to stop the hard boiled egg by putting one finger on it. As you lift your finger off the hard boiled egg, it will stop its spinning motion. On the other hand, if you spin a normal egg and try to stop the egg, while lifting up your finger, the egg will still move. This can be explained for in a normal egg because there is liquid inside the egg, and when you try to stop the egg, the liquid inside of it will keep on moving. This example, goes forth Newton’s First Law, which explains an object in motion will stay in motion.

Evidence: You can find force, mass, or acceleration, if you know at least two of the three. For example, if you know the force and mass, then you can easily find the one acceleration by F/m=a.

Evidence: 3 Newton’s Laws: First Law: An object in motion will stay in motion, and an object at rest will stay at rest unless an outside force acts upon that object. Second Law: F=m x a Third Law: For every motion, there is an equal and opposite reaction.

Electricy and Magnetism

Magnetic Fields

Connection: Going off of the circuit connection, magnetic fields are also present. As the light were on, it creates a magnetic field around the circuit wires. Magnetic fields are produced through the movement of an electric charge. This shows that during the Flash’s adventure, there was also the presents of magnetic fields going on.

Resources: Notebook (Pg. 55, 56)

Evidence: Magnetic fields are produced through the movement of an electric charge.

Evidence: Current, magnetism, and force are perpendicular to each other.

Evidence: When using a compass, there are north and south poles. These poles guide us to locations in this world, and help us when we are lost. These poles move the compass to where north, and south are.

Circuits

Connection: During the event of Barry Allen getting hit by lightning, the lights of the room also went out. The lights in the room are examples of circuits. The lights are connected through a series and parallel circuit. This is shown because when you switch on one light, one section of the lights turn on. This shows that circuits were present during the story of the Flash.

Resources: Notebook (Pg, 52, 56)

Evidence: One time, our christmas tree was not working because of the lights. The lights were in a series. This means if one light bulb is out on the circuit than all of them will go out.

Evidence: One requirement of a circuit is that there must be an energy supply capable doing work on charge to move it from low energy to high energy and to establish an electric potential difference. The second requirement is that it must be a closed conducting loop in the external circuit that stretches from the high potential, positive terminal to low potential, negative terminal.

Evidence: A circuit is a circle of wires, which electrons can flow through, it starts and finishes at the same spot. This can also be defined as a closed loop through charges can move through.

Static

Connection: During a dark stormy night, Barry Allen was near an open window, when a lighting bolt hit the building. This allowed electrical current to pass through his body. Such voltages would inevitably had killed Barry, but all it did was knock him off his feet. This event also lead to how Barry Allen became the Flash. This goes back to static electricity because during a storm, people on the ground are in a positive state and the clouds are in a negative state, which resulted in a blast of lighting.

Resources: Notebook (Pg. 50, 51)

Evidence: When you rub a balloon on your head, electrons from your head go to the balloon. This makes your hair have a positive charge, and the balloon have a negative charge. As we learned in class, opposites attract. Making the balloon and hair attracted to each other.

Evidence: Static electricity is the movement of electrons from one material to the next. When electrons move from one material to the next. It makes both the material negatively charged or positively charged. This is due to some material being more grabby with electrons. An example of this, can be a balloon, which will take electrons from a material. On the other hand, other materials are more givers. They like to give electrons to other materials such as a sweater.

Light

How we see

Connection: When Barry Allen saw the lightning, the light from the bolt, went through Barry Allen’s eyes, which then went through the pupil. The pupil allows how much light can enter the eye. The lens of the eye then pivots the light and then projects the light onto the retina of the eye. Then the retina converts the light into electrical signals, which the brain uses to detect light.

Resources: Notebook (Pg. 44, 39)

Evidence: Light can happen when someone flashed a flashlight at you. As you look at the light, the light goes through the different parts of your eyes, making you see a really bright light.

Evidence: The cornea in our eyes let’s the light into the eye. The opening in the pupil allows that light into the eye. The lens then focuses the light and projects it onto the retina. The retina converts light energy into electrical signals. The retina also has rods and cones that detect color. Rods detect black, white, and the brightness, while cones detect red, blue, and green, which allows us to see.

Carries Information and energy

Connection: When the Flash was hit with the lighting, you could see the flash of the lightning, which lightning is when there is a discharge between electrically charged regions. This also supports the fact that light can carry energy, as lighting is energy. The lighting happened because the lower part of a cloud was negatively charged and the space around Barry Allen was positively charged. Making Barry Allen get hit with a bolt of lightning.

Resources: Notebook (Pg. 44, 37)

Evidence: A real life example of light carrying energy is when you feel light hit the skin. This is when radiation energy is given to your skin, which excites random motions, making thermal energy. This is explains for the heat you feel from the sun’s rays, and when you get burnt from the sun.

Evidence: Light allows us to identify elements, and which is why light carries information. On the other hand, light carries energy because of the fact that the sun’s light carries such things as ultraviolet radiation.

Can be Emitted and Absorbed

Connection: The Flash has a costume of orange and red. You see these colors because the material the Flash used to create this costume, absorbs all the other colors, but orange and red. This makes a person viewing his costume see the colors of red and orange as it reflects and emits off of the material of the costume. This goes forth every object that is seen from your viewing , as you see different colors.

Resources: Notebook (Pg. 44, 40)

Evidence: When you look at a banana, you see the color yellow. This is because the light from the sun is emitted by the sun and is absorbed by the banana. When the light hits the banana, the banana takes in all the other colors, but yellow from the EM spectrum. That’s when it emits yellow because it can’t absorb it, which explains for bananas being yellow.

Evidence: Emission of light depends on the state of the atom. When an atom is excited, and electron moves from a higher energy to ground level, which is when light is emitted. Light also gets absorbed when light travels from one medium to another. Like when light, having a frequency, hits a material, with the same frequency, it will absorb the energy of light.

Evidence: Emission is light coming from a source and happens when a atom, molecule, or solid decay goes to lower levels by emitting radiations. Absorption, on the other hand, is light blocked by a material.

Is a Wave and Particle

Connection: When the Flash runs at high speeds on a hot summer day, he will get a little burnt. This is because the sun emits ultraviolet radiation that penetrates his skin. This supports that fact that light is a wave and particle. Light as a wave can be shown as color we seen from objects. On the other hand, when the Flash is walking through the forest, the photons from the sun are absorbed by the trees and plants all around the Flash.

Resources: Notebook (Pg. 36, 44)

Evidence:Light travels at 186,000 miles per second, which shows at 400-700 nanometers

Evidence: When you put plant in a dark room, the plant will die. This is because light turns into a particle, when it hits the plant through photosynthesis. This helps the plant, for it converts solar energy into energy. So the elements on the plant can move around.

Evidence: Light is an electromagnetic wave that can interfere, diffract, be polarized, and has other behaviors typical of any wave. Light is also a particle because of individual packets of light, called photons, which can eject a electrons.