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68 Cards in this Set

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  • Back
A DEVICE THAT INCREASES OR DECREASES VOLTAGE IN A POWER LINE IS A
transformer
IN PLATE TECTONICS, PLATES SCRAPE PAST EACH OTHER AT TRANFORM FAULT BOUNDARIES. PLATE TETONICS IS AN EXAMPLE OF WHAT KIND OF FRICTION?
sliding
A STATIC DISCHARGE DIFFERS FROM AN ELECTRIC CURRENT IN THAT STATIC DISCHARGE _____
lasts for only a fraction of a second.
HAS WAVES LONGER THAN MICROWAVES
radio waves
SOUND WAVES ARE EXAMPLES OF
longitudinal waves
IF THE LEAVES OF AN ELECTROSCOPE SPREAD APART, IT MEANS THAT
the leaves have received a charge
AS A ROLLER COASTER MOVES DOWN A HILL WHAT DESCRIBES ITS ENERGY
it is converted from peotential energy into kinetic energy
CAN SOUND WAVES TRAVEL THROUGH SOLIDS?
yes
LIGHT TRAVELS FASTER IN A GLASS OR A VACUUM?
vacuum
A WAVE TRANSPORTS ____________, BUT NOT ______
energy---matter
WHAT MAKES LIGHT CHANGE DIRECTION AS IT PASSES FROM AIR TO GLASS?
refraction
CAN 2 WAVES OCCUPY THE SAME SPACE AT THE SAME TIME?
yes
A WAVE X METERS LONG HAS A SPEED OF Y METERS PER SECOND. THE FREQUENCY OF THE WAVE IS
y/x
THE GREATER THE FREQUENCY OF A WAVE THE GREATER THE
speed of the wave
RESISTANCE IS MEASURED IN
ohms
RADIO WAVES ARE AN EXAMPLE OF ______ WAVES?
electromaginic waves.
VISIBLE LIGHT WAVES REQUIRE A _____________ TO TRAVEL
medium
CURRENT IS EQUAL TO THE POTENTIAL DIFFERENCE DIVIDED BY THE RESISTANCE, IS KNOWN AS
Ohm's Law
A PATH CREATED FOR A CURRENT THAT ALLOWS ONLY ONE ROUTE IS CALLED A
series current
THE ATOMS IN A MAGNET ARE LINED UP
according to their charges
A CIRCUIT THAT HAS 2 OR MORE SEPARATE PATHS FOR ELECTRONS TO FOLLOW IS A
parallel circuit
A MATERIAL THROUGH WHICH ELECTRONS DO NOT READILY FLOW IS
an insulator
THE FORCE OF A MAGNET IS STRONGEST AT
the poles
ONE SOURCE OF CONSTANT ELECTRIC CURRENT IS A
dry cell
THE REGION AROUND A MAGNET WHERE THE MAGNETIC FORCES ACT IS THE
magnetic field
ELECTRIC CHARGE THAT HAS BUILT UP IN ONE PLACE IS REFERRED TO AS
static electricity
A WAVE HAS A PERIOD OF 0.25 SECONDS. THE FREQUENCY OF THIS WAVE IS
4
THE DIFFERENCE BETWEEN VISIBLE LIGHT AND X RAYS IT
the frequency of X rays is greater
WHEN CURRENT FLOWS THROUGH A WIRE, WHAT IS CREATED AROUND THE WIRE?
magnetic field
AN INSTRUMENT THAT MEASURES THE POTENTIAL DIFFERENC IS
voltmeter
THE FUNCTION OF AN ELECTRIC MOTOR IS TO
change electrical energy to mechanical energy
A DEVICE DESIGNED TO PEN AN OVERLAODED CIRUCIT AND PREVENT OVERHEATING IS A
circuit breaker
A TV THAT NEEDS 0.40 AMPERE OF CURENT IS OPERATED ON A 120-VOLT SERVICE FOR 5.0 HOURS. HOW MUCH ENERGY IS USED?
0.24 kWh
THE AMOUNT OF ENERGY IN A PHOTON OF LIGHT IS PROPORTIONAL TO THE
frequency of the corresponding light wave.
LIGHT WAVES REQUIRE A
medium
WHICH SIMPLE MACHINES ARE FOUND IN A BICYCLE
lever; wheel and axle
THE FREQUENCY OF A SOUND WAVE DETERMINES
the pitch of the sound
WHAT HAPPENS TO THE VOLTAGE OF THE CIRCUIT WHEN THE CURRENT APPLIED TO THE CIRCUIT INCRESASES AND THE RESISTANCE IS HELD CONTSTANT
the voltage increases
LAW OF REFLECTION: WHEN LIGHT RAYS REFLECT OFF A SURFACE THE ANGLE OF INCIDENCE IS _____ TO THE ANGLE OF REFLECTION.
equal to
THE RELATIONASHIPBETWEEN MASS, FORCE, AND ACCELERATION IS EXPLAINED BY
Newton's 2nd law of motion
DESCRIBE THE DIRECTION OF THE ELECTRIC CURRENT IN AC
it changes regularly
WHEN AN OBJECT IS AT REST THE FORCES ACTING ON THE OBJECT
balance each other
WHICH TYPE OF ELECTOMAGNETIC WAVES HAS A SLIGHTLY LONGER WAVELENGTHS THAN RED LIGHT?
infared light
WHAT IS A STATEMENT REGARDING AN OBJECT FALLING TO EARTH?
earth pulls on the object, and the object pulls on the Earth
THE RATE OF CHANGE OF SPEED IN A DIRECTION IS CALLED
acceleration
GRAVITATIONAL ATTRACTION BETWEEN 2 OBJECTS IS AFFECTED BY
mass and distance
WHEN NASA LAUCHES A ROCKET INTO SPACE WHICH OF NEWTON'S LAW'S DESCRIBES THE FIRING OF THE ROCKET.
action/reaction
IF YOU ARE IN A CAR THAT SUDDENLY STOPS, HOW WILL YOUR BODY REACT?
it will continue to move foreward.
STYROFOAM IS A GOOD HEAT
insulator
THE POTENTIAL ENERGY OF AN ELECTRIC ____________ AS IT MOVES THROUGH A CIRCUIT
increases
THE MEASURE OF THE AVERAGE KINETIC ENERGY OF THE PARTICLES IN AN OBJECT CAN BE DESCRIBED BY
temperature
LIGHT WAVES ARE WHAT KIND OF WAVES?
transverse waves
WHAT IS THE DISADVANTAGE OF USING SOLAR CELLS (solar energy)
solar energy is not always available
WHICH TKYPE OF ELECTROMAGNETIC RADIATION IS USED TO KILL CANCER CELLS?
gamma rays
LIGHTNING IS
a very large discharge of static electricity
THE RATE AT WHICH AN ELECTRICAL DEVICE CONVERTS ENERGY FROM ONE FORM TO ANOTHER IS CALLED
electrical power
THE FORCE THAT OPPOSES GRAVITY WHEN A LEAF FALLS IS
air resistance
IF IVY WON A 300 METER RACE IN 40 SECONDS, WHAT WAS HER RATE OF SPEED?
7.5 m/s
THE COLOR OF VISIBLE LIGHT DEPENDS ON THE
wavelength of the light.
SOUND WAVES REQUIRE
a medium
A WAVE WITH A FREQUENCY OF 0.5 Hz AND A SPEED OF 10 m/s HAS A WAVELENGTH OF
20m.
WHICH TYPE OF ELECTROMAGNETIC WAVES HAS THE HIGHEST FREQUENCY?
gamma
WATER WAVES TRANSPORT
energy, but not water
WHICH TYPE OF ELECTROMAGNETIC WAVE HAS THE GREATEST WAVELENGTH?
radio
A TRAIN OF WAVES IS MOVING AT A SPEED OF 30 m/s. THE FREQUENCY OF THE WAVES IS 10 Hz. WHAT IS THE WAVELENGTH?
3m
WHEN LIGHT RAYS REFLECT OFF A ROUGH SURFACE, THEY
scatter in different directions
HOW WAS NEIL ARMSTRONG AFFECTED WHEN HE LANDED ON THE MOON? (WEIGHT & MASS)
his weight changed, his mass did not.
WHAT IS THE RELATIONSHIP AMONG POWER, CURRENT, AND VOLTAGE (FORMULA)
P = I x V