Section 1
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What do step up Transformers do?
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Last updated
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Date created
Mar 14, 2020
Cards (112)
Section 1
(50 cards)
What do step up Transformers do?
They increase voltage
What is direct current?
Electrons flow in one direction
What is work Output?
Work used to overcome the force and the machine works against
How are you charged for electricity?
Sold in KWH=one 100w light for 10 hours or 100w bulbs for an hour
What is kinetic energy?
It is the energy an object has due to it's motion if its not moving
The thinner the wire?
There is more resistance
What is thermal energy?
Internal motion of atoms. They faster they move the more energy they have.
What charge does a Neutron have and where is it located?
Neutral, Nucleus
What is electric Power?
Rate at which eletric energy is converted into other from if energy
Electron
Negative, cloud/shell
What is Ohm's law?
Describes the relationship between Current(I), Voltage(V), and resistance(R)
What is a Parallel circuit?
Parts of a circuit are on a separate branches
What is potential energy?
Energy stored in any object because of its position
What is voltage?
Electric potential difference between 2 points
What is current direction?
Direction of the current depends on which way the magnetic or wire moves
What is machine efficiency?
Compares work output to work input
What is a frequency?
The number of waves that pass a point per second
What is Alternating Current?
Electrons flow one way, then the opposite way then back the other way ect
What is resistance a measure of?
It is a measurement of how difficult it is for electrons to flow through material
What is electromagnet?
Consists of an iron wrapped by a wire...wire carries a current, it makes the core of a magnet
What is a wavelength?
The distance between a point on the wave on the identical point on the next wave
What is a conductor?
A charged object touches a neutral object
What is a series Circuit?
Parts of a circuit are connected one after the other
What is radiant energy
This energy is carried in the light
What is nuclear energy
Energy in the center of the atom
What does resistance depend on?
length and thickness
What is an Ion?
An atom that gains or loses one or more electrons
What is chemical energy
Bonds that hold atoms together
What is an electric motor?
Converts electrical energy into mechanical energy
What is Kinetic energy?
Energy in motion
What happens when the atoms collide in resistance?
The collision converts electrical energy into heat or light
What is current?
Rate at which electrons pass a given point
What is energy?
The ability to do work (physical)
What is a circuit?
A closed path that allows electrons to flow
What is the conservation of energy?
Energy is never created or destroyed
What is a nonrenewable resource?
An energy source that is used up much faster than it can be replaced is a nuclear energy
What do step down Transformers do?
Decrease voltage
What is work input?
Work applied to a machine
What types of mechanical waves are there?
Transverse and Compressional
What is a machine?
Devise that makes work easier
What is a generator?
Converts mechanical energy into electrical energy
Why is copper used for wire?
It is a good conductor and has lost of resistance
What charge does a Proton have and where is it located?
Positive, Nucleus
What is an induced Current?
The magnetic field must change the produce an eletrical current
Who do machines make work easier?
Changing the size of the force, changing the direction of the force and change the distance of force
What is mechanical Advantage?
The number of times a machine multiplies the effort force
What is a Induction
a charged object caused opposite charge on neutral objects w/o touching
What is an incline plane?
A straight slanted surface like a ramp
When the wire is longer that means?
there is more resistance
What is mechanical energy?
Matter in motion ex: Wind, Waterfalls, and sound
Section 2
(50 cards)
What is diffraction?
Bending around the barrier
What does the speed of sound depend on?
Depends on the medium
What is resistance?
It is a measure of how difficult it is for electrons to flow through a material
What charge does a proton have and where is it located
Positive, nucleus
What does a mechanical wave require?
Requires a medium to pass through
What is an electric force?
Attractive of repulse force exerted by charged objects on each other
What is the Doppler effect?
Change in pitch of a sound caused by movement of sound
What is the scale from lowest energy to highest energy electromagnetic spectrum?
Radio and microwave, Infrared, Visible, Ultraviolet, X-rays, Gamma rays
What is a virtual image?
It can be projected onto a screen
What is forced vibration?
When an object is forced to vibrate by another object either by direct contact or by being close
What charge does a electron have and where is it located
It is negative and in the cloud/shell
What is a trough?
The lowest point on a transverse wave or rarefaction on a longitudinal wave
What is the speed of light?
300,000 km/s
What is an ion?
An atom that gains or looses one or more electrons
What is amplitude?
The maximum movement from rest
What is Refraction?
The bending of a wave as it changes speed
What is a Generator?
It converts mechanical energy into electrical energy
What does the image look like on a plane mirror?
Upright but reverse (right is left and left is right)
What is Voltage?
Electrical potential difference between 2 points
What is a convex Mirror?
Reflective surface is on the outside of a curved mirror
What type of image does a concave mirror produce?
Real (so it can not be projected)
What do electromagnetic waves not need?
A medium to pass through
What does loss of electrons cause?
A positive charge
What does the image look like(concave mirror)?
Upside down and smaller
What is a parallel circuit?
Parts of a circuit on seprate branches
What is an electromagnetic?
Consists of an iron core wrapped by a wire
What is Alternation current?
Electrons flow one way then switch directions then back the other way
Do plane mirrors have a virtual image?
Yes
What is Induced Current?
The magnetic field must change to produce an electric current
What is the definition of electronics
Study of how electronics are used by helpful devices
What charge does a newton have and where is it located
Neutral, nucleus
What is a concave mirror?
Reflective surface is on the inside of a curved mirror
What is interference?
When 2 or more waves meet at the same place at the same time, A new wave is formed based on how the waves meet
What is electric power?
rate at which electricity is converted into other form of energy
What is a wave reflection?
A wave strikes an object or surface a bounces off
What is intensity?
Rate of energy that flows through a given area
What type of image is formed(convex mirror)?
Virtual
What is Timbre?
When an object vibrates at its natural or resonant frequency it produces a standing wave
How is sound made?
An object vibrates and gives energy to the partials around it then created compression's and refraction
What is pitch?
How high or low a sound is
What is the lowest resonate frequency called?
Fundamental tone
What is frequency?
The number of waves that pass a point per second
What is a plane mirror?
Are flat, reflective surfaces
What is Ohm's Law?
Describes the relationship between Current Voltage and Resistance
what is Series circuit?
All parts of the circuit are connected one after the other
What is a crest?
The highest point on transverse wave or compression on a longitudinal wave
What is a transformer?
Increases or decreases voltage
What is Natural frequency?
The frequency at which an object is disturbed
What does gain of electrons cause?
A negative charge
What is an overtone?
While the whole object is vibrating at it's resonant frequency sections are vibrating faster
Section 3
(12 cards)