Electricity
An electrical charge is usually produced by the removal or addition of ___________________.
electrons
What is the name of the quantity that is equal to V/I?
R - Resistance (V=IR)
The distance that a wave rises or falls from its normal rest position is called its _________________.
Amplitude
True or False: Sound travels fastest through a vacuum
False. Sound can not travel in a vacuum.
If you stand 5 meters from a flat mirror, how far behind the mirror will your image appear to be?
5 meters
Which of the following is a conductor: Plastic, Copper, or Wood?
Copper
What part of a circuit is designed to turn electricity into another form of energy? Is it the Switch, Resistor, Voltage or Wires?
Resistor
The number of wavelengths that pass a given point in one second is called ___________________.
frequency
How high or low a tone sounds is called its __________.
pitch
State the law of reflection
The angle of reflection equals the angle of incidence
State the Law of Charges
Like charges repel, opposite charges attract
Two light bulbs are connected into a circuit. One bulb burns out, but the other keeps burning. What kind of circuit is this?
Parallel
The distance between one wave crest and the next is called a(n) ________________________.
wavelength
True or False: The speed at which sound travels through a medium is affected by the temperature of that medium.
True.
Name the 7 types of waves discussed in your textbook that make up the electromagnetic spectrum.
***Daily Double***
Place the waves in order from highest to lowest frequency (decreasing energy)
Infrared Rays,
Gamma rays, Infrared light, Radio Waves, Microwaves, Ultraviolet light, Visible Light, X-rays
(above is not in order)
True or False: Static Cling is worse in summer than in winter because summer air is moister and contains more ions.
False. Static Cling is worse in winter when the air is less humid.
A complete path for electrical current is called a(n)
Follow up: What are the three basic parts of any circuit?
Is sound a longitudinal or transverse wave?
Longitudinal.
We hear sound as having different pitch and volume. What wave characteristic is responsible for the volume of the sound and which wave characteristic is responsible for the pitch?
(possible answers: wavelength, frequency, crest, trough, amplitude)
volume - Amplitude
pitch - frequency/wavelength
When light passes from glass to a second medium, it bends toward the normal. You can conclude that the second medium is (more/less) dense than glass?
more dense
True or False: Induction produces only a temporary store of charges.
True
True or False: A circuit with a current of 1A and a resistance of 6 ohms has a potential difference of 1/6 volts.
False. V=IR, so the voltage would be 6 Volts
A disturbance that propagates in a medium.
In which medium does sound travel faster: Air, Gasoline, Iron, or Water
the most dense - Iron
What is the difference between a real and virtual image?
A real image is an image through which the light rays actually pass, while a virtual image is created by the extrapolated light rays. A virtual image appears to be behind (inside) a mirror.