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Purple Lab Book Assessment : (Energy is Everywhere (MRCENT: Mechanical,…
Purple Lab Book Assessment :
Energy is Everywhere
MRCENT: Mechanical, Radiant, Chemical, Electrical, Nuclear, and Thermal
Energy Flow Diagrams allow for us to see the transfer of energy within a system
Nuclear energy is stored in the nucleus of an atom
Nuclear Fission is the splitting of an atom's nucleus
Nuclear Fusion is the combination of two atom's nucleii
Where's the Juice?
Electrolyte and 2 Electrodes
Batteries are chemical energy
The difference in the charge between electrodes is potential difference
Voltage is the force that causes the current to flow
If the electrodes are the same, then there is no potential difference
The Big Switch
Electrical energy alone does not produce mechanical
Electrical motor- electric current flowing though a wire, creating a magnetic field
When magnetic fields interact they either attract fo repel each other, turning a motor
Moving electrons produce electrical energy
Opposites attract, same repel
Go with the Flow
IF a bulb is part of a circuit, electrons will be transferred to the electrons in the filament of the bulb
When the voltage increases so does the current
Series: resistors are arranged so the current has only one path to take.
Parallel:has two or more paths for the electricity to flow
When the resistance increases the current decreases
What's in Wave?
Wave is a disturbance that transfers energy though matter or space
Transverse move perpendicular to the rest point and do not require a medium
Compression move parallel to the rest point and require a medium
Transverse have crests and troughs
Compression have compressions and rearefactions
The Spectacular Spectrum
The EMS is a model which scientists use to illustrate the relationship between the different wavelengths and their properties
Visible Light is the only part of the EMS which we can see
Radio are the longest wavelength and Gamma are the shortest
Speed of light in a Vacuum: 300,000,000 m/s
Visible light is caused by diffraction of white light
The Optic Files
Waves are either reflected, transmitted, or absorbed
Transmittion through mediums causes refraction, or bending
Concave: Upright, Smaller, l-r
Convex: Magnified upright, l-r OR blurs, inverted, smaller
Mirrors reflect light rays
Sound's Cool
Sound can be used to destroy cancerous cells
Sound is mechanical energy
Constructive interference: when the waves match up and the amplitude of the result is increased
Destructive interference; When the waves match up, and they cancel each other
Sonar, Ultrasounds, Echolocation, and Noise Cancellation
Energy on the [Move]
The best conductors are metals and the best insulators are plastic and wood
Conduction: Direct Contact
Convection: fluids
Radiation: EMS molecular movement
Black absorbs light and White Reflects it
It's Just a Phase
Kelvin=273.2+C
Solid: particles are organized and vibrate in fixed positions
Liquids: particles are less organized and more fluid
Gas:molecules ove freely and fast
Adding and Subtracting thermal energy changes the phase of the matter.