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84 Cards in this Set

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  • Back
The pitch of a sound is most closely related to the
frequency of vibrations
A boy pushes on a parked car with the force of 200 N. The car does not move. How much work does the boy do on the car?
zero
The law that states that every object maintains constant velocity unless acted on by an unbalanced force is
Newton's first law of motion
Power is measured in
watts
A cold-blooded reptile basks on a warm rock in the sun. Its body is warmed by
conduction and radiation
Whenever an object is standing still, the value(s) tha is/are always zero is/are
momentum
speed
velocity
Which type if electromagnetic waves has the highest frequency?
gamma rays
Gravitational potential energy depends on the
1. acceleration due to gravity
2. the mass of the object
3. the height of the object
Absolute zero means
all atoms stop moving
An orange looks orange because it
reflects orange light and absorbs other colors
According to current regulations, nuclear power plants in the US can be operated for
40 years
The transfer of energy as heat caused by the collision of molecules is called
conduction
Temperature is
1. Proportional to the average kinetic energy of molecules
2. asociated with the sensation of hot and cold
3. measured with thermometers
A lens that can focus light is called a
convex lens
Alpha particles are nuclei of
helium
What method of energy transfer does not involve movement of matter
radiation
A tug-of-war that results in one team pulling the other across the line is an example of
unbalanced forces
Which type of electromagnetic radiation is used to kill cancer cells?
gamma rays
The law that states that for every action force there is an equal and opposite reaction force is
Newton's third law of motion
The transfer of energy by the movement of fluids or gases with different temperatures is called
convection
When the velocity of an object changes, it is acted upon by a
force
Acceleration is defined as the change in velocity divided by
time
If you divide momentum by velocity, the result is the value of the object's
mass
Resonance refers to an effect in which the
vibration of one object causes another object to vibrate at natural frequencies
fusion occurs when nuclei
combine
The SI unit for acceleration is
2
m/s
The primary source of the sun's energy is
nuclear fusion
The distance traveled by an object divided by the time it takes to travel that distance is called
average speed
What substance is a very good conductor of transferring energy as heat?
iron
If he net force on an object is zero then the object has
balanced forces
What kind of waves are used for cooking and communication
microwaves
Gravity depends of both
mass and distance
Weight is best described as
the downward force exerted on objects due to gravity.
What is a factor in calculating momentum?
speed
direction
mass
Luring final Spring 2007
cut apart and study
The difference between speed and velocity is that velocity included
direction
The type of nuclear radiation that can penetrate farthest through matter is called
neutron emission
On the Kelvin Temperature scale water freezes at
273 K
The very top of a wave is called a
crest
Convection currents rise in air because
cool air descends and hot air rises
The opposite reaction to fusion is called
fission
The law that states that the unbalanced force acting on an object equals the object's mass times its acceleration is
Newton's second law of motion
The Fahrenheit temperature scale is defined by which of the following temperatures?
Water boils at 212 degrees and freezes at 32 degrees.
Which of the following is not a type of nuclear radiation?
X-rays
When objects are moved further apart from each other, the force of gravity
decreases
Kinetic energy dependds on
mass and velocity
As the kinetic energy of the molecules in a substance increases, the
temperature of the substance increases
The effect in which white light separates into different colors is called
dispersion
Momentum has both
velocity and mass
Radioactive materials have unstable
nuclei
On a velocity-time graph, a line with a negative slope indicates that the object is
slowing down
What is the speed of an object at rest/
0 km/h
Sound travels fastest in
sea water
Friction is defined as
force that opposes motion between two surfaces that are touching
The SI unit of force, named for the scientist who described the relationship between motion and force, is called the
newton
In order to determine speed, you must know
both time and distance
Alpha particles
are positively charged
A light wave bending through a lens
refraction
The units for velocity
m/s
This lens can focus light
convex lens
the units for Power
joule
This wave has the lowest frequency
radio wave
This lens cannot focus light and is for nearsightedness
concave lens
The units for momentum
kg x m/s
ROY G BIV are the colors for this wave
visible light
The units for force
newton
This wave has the highest frequency
gamma ray
A light wave bouncing off a mirror
reflection
The units for loudness and softness of a sound
decibel
The units for energy and work
watt
The temperature of a volume of a gas will change if the pressure of the gas or volume of the gas changes-T/F
T
Energy is transferred as heat between two objects at the same temperature. T/F
F
It takes more energy as heat to raise the temperature of water by one degree than to raise the temperature of steam by the same amount. T/F
T
What is the only method of energy transfer that can take place in a VACUUM?
RADIATION
Do machines decrease the amount of energy that is needed to do work?
NO
An object weighing 45 N is dropped from the top of a high rise building and falls a distance of 31m to the ground. How much work does gravity do on the object from the time it is dropped to the time it hits the ground.
Formula for Work = W = fd

f= 45N W = 45(31)
d= 31 m W = 1,395
What is 115 F on the Celsius Scale?

F= (C;1.8) 32 C= F-32 ; 0.55
46 C
A 5 kg cat chasing a mouse east at
2.5 m/s has a momentum of ?
m = vm

m = 5 kg
v = 2.5 m/s m = 12.5 m/s east
A weightlifter presses a 325 N weight .35 m over his head in 4 seconds. What is the power of the weight lifter?
Power = p = w/t so you must first find work (w) for this problem
w= fd
f= 325 N
d = .35
W= ? fd or 325 (.35)
w = 113.75

Now find Power p = w/t or work divided by time
113.75 / 4 = 45.5 Watts
What is the gravitational potential energy of a 48 kg box that is 9.0 m above the ground?
P.E. = mgh PE = (48)(9.8)(9) =
m= 48
g = 9.8
h = 9 4233.6 or 4234 J
What is -220 on the Kelvin Scale?
K = C + 273

-220 + 273 =

53 K
What is 78 C o the Kelvin Scale?
K = C + 273

78 + 273 = 351 K
A medicine ball has a mass of 4 kg and is thrown with a speed of 1.5 m/s. What is its kinetic energy?
KE =

m= 4
v = 1.5 K= 1/2 (4) (1.5) (1.5) = 4.5 J
Mr. Luring
Integrated Science
2nd Quarter Final December 2008
Cut Apart and Study!