Test
Physics Study for Final
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Preguntas del test (144)
1Nearly all matter expands when its temperature [blank_start]increases[blank_end] and contracts when its temperature [blank_start]decreases[blank_end]
- Adecreases
- Bincreases
2[blank_start]Heat[blank_end] is what you call the type of energy that is transferred from one object to another because of a temperature difference between them?
- AHeat
3What is the measure of the amount of disorder?
- AEntropy
- BAdiabatic
- CTemperature
4Light colored objects [blank_start]reflect[blank_end] more light, so light colored clothing keeps people [blank_start]cooler[blank_end] during the summer
- Acooler
- Breflect
5The phase of matter depends upon its [blank_start]temperature[blank_end] and [blank_start]pressure[blank_end] that is exerted upon it
- Apressure
- Btemperature
6The most common unit to measure heat is [blank_start]calorie[blank_end]
- Acalorie
7[blank_start]Water[blank_end] has a much higher capacity for storing energy than most common materials
- AWater
82nd law of thermodynamics states that the flow of heat is always from [blank_start]hot to cold[blank_end]
- Ahot to cold
9The direction of spontaneous energy transfer is always from a [blank_start]warmer[blank_end] substance to a [blank_start]cooler[blank_end] substance
- Awarmer
- Bcooler
10When the atoms or molecules in matter move faster and increase its kinetic energy, it becomes [blank_start]warmer[blank_end]
- Awarmer
11Newton's law of cooling: the rate of cooling of an object is approximately [blank_start]proportional[blank_end] to the temperature difference between the object and its surroundings.
- Aproportional
12Good insulators [blank_start]delay[blank_end] the transfer of heat
- Adelay
13Which law is generally stated as: whenever heat is added to a system, it transforms to an equal amount of some other form of energy.
- AFirst Law Of Thermodynamics
- BNewton's 2nd law
- CSecond Law of Thermodynamics
14A good absorber of radiant energy reflects very little radiant energy, so a good absorber appears [blank_start]dark[blank_end]
- Adark
15When there is no movement of the atoms in a substance, the substance is at [blank_start]absolute zero[blank_end]
- Aabsolute zero
16What is the quantity that tells how hot or cold something is?
- Acalorie
- Bthermometer
- Cheat
- Dtemperature
17The period depends only on the length of the pendulum and the acceleration due to [blank_start]gravity[blank_end]
- Agravity
18Vibration of a pendulum has a back and forth swing that takes time and is called the [blank_start]period[blank_end]
- Aperiod
19A [blank_start]sine[blank_end] curve is the pictorial representation of a wave
- Asine
20The [blank_start]amplitude[blank_end] refers to the distance from the midpoint to the crest (or trough) of the wave
- Aamplitude
21The [blank_start]wavelength[blank_end] of a wave is the distance from the top of one crest to the top of the next one
- Awavelength
22[blank_start]Frequency[blank_end] of a vibrating pendulum or object on a spring the number of back and forth vibrations it makes in a given time (referred to as cycle per second).
- AFrequency
23Formula for frequency & units?
- Af=1/T, sec
- Bf=T/1, sec
- Cf= 1/T, Hz
- Dv=fT, m/s
24The energy transferred from a vibrating source to a receiver is carried by a disturbance in a [blank_start]medium[blank_end]
- Amedium
25Soundwaves move at 330 m/s to 350 m/s in air (depends on [blank_start]temperature[blank_end])
- Atemperature
26In the formula v=fλ, what do the variables mean?
- Av = velocity, f = frequency, λ = wavelength
- Bv = velocity, f = frequency, λ = period
- Cv = velocity, f = period, λ = frequency
27Radio waves and light waves are [blank_start]transverse[blank_end] waves
- Atransverse
28Sound waves are [blank_start]longitudinal[blank_end] waves
- Alongitudinal
29When the crest of one wave overlaps the crest of another, their individual effects add together, and is called [blank_start]constructive[blank_end] interference
- Aconstructive
30When the crest of one wave overlaps the trough of another their individual effects are reduced/cancelled, and it is called [blank_start]destructive[blank_end].
- Adestructive
31A wave has an incident and reflected waves, a node which remains stationary, and fixed at one side is a [blank_start]standing[blank_end] wave.
- Astanding
32The [blank_start]Doppler[blank_end] effect is the change in frequency of a wave due to the motion of the source or of the reciever.
- ADoppler
33When the source is approaching the receiver, there is a shorter distance between wave crest, so the waves are at a [blank_start]higher[blank_end] frequency.
- Ahigher
34When the source is moving away from the receiver, there is a longer distance between wave crest, so the waves are a [blank_start]lower[blank_end] frequency.
- Alower
35All sounds are produced by the [blank_start]vibrations[blank_end] of material objects which then sends a disturbance through surrounding [blank_start]medium[blank_end], usually air, in the form of [blank_start]longitudinal[blank_end] waves.
- Amedium
- Bvibrations
- Clongitudinal
36Our subjective impression about the frequency of the sound is [blank_start]pitch[blank_end]
- Apitch
37Sound waves with frequencies below 20 Hz are called [blank_start]infrasonic[blank_end], and frequencies above 20,000 Hz are called [blank_start]ultrasonic[blank_end].
- Ainfrasonic
- Bultrasonic
38What produces maximum loudness and occurs when the pulse of compressed air molecules pushed together?
- ACompression
- BRarefraction
- CForced Vibration
39What produces minimum loudness where the air molecules are pushed out of a normally closed space which created a low pressure where the air is being pushed out?
- ACompression
- BRarefraction
- CForced Vibration
40Sound travels fastest through a [blank_start]solid[blank_end], and not at all in a [blank_start]vacuum[blank_end]
- Asolid
- Bvacuum
41The speed of sound in dry air at 20 degrees C is about [blank_start]340[blank_end] m/s
- A340
42In elastic material like [blank_start]steel[blank_end], the atoms are relatively close so they transmit better.
- Asteel
43The intensity of sound is measured in [blank_start]decibel[blank_end]
- Adecibel
44When the frequency of a forced vibration matches the object's natural frequency, a dramatic increase in amplitude occurs and is called [blank_start]resonance[blank_end].
- Aresonance
45The periodic variation in loudness of sound is a [blank_start]beat[blank_end]
- Abeat
46The frequency of a pendulum that has a period of 2 seconds is [blank_start]0.5 Hz[blank_end]
- A0.5 Hz
47The speed of waves in a puddle that are 0.5 meters apart is created by tapping the surface 5 times each second is [blank_start]2.5 m/s[blank_end]
- A2.5 m/s
48This light is a combination of all colors. and it reflects all light frequencies
- Ared
- Bblack
- Cblue
- Dwhite
49This is the absence of light because they absorb light of all frequencies
- Ared
- Bblack
- Cblue
- Dwhite
50The colors of most objects around you are due to the way the objects [blank_start]reflect[blank_end] light
- Areflect
51Most materials absorb light that is the same resonant [blank_start]frequencies[blank_end] and reflect the rest
- Afrequencies
52The material that selectively absorbs colored light is known as a [blank_start]pigment[blank_end].
- Apigment
53What type of light appears when a combination of red, green, and blue light overlap?
- Acyan
- Bwhite
- Cblack
- Dyellow
54Red, Green, and blue are called the [blank_start]additive primary[blank_end] colors
- Aadditive primary
55Yellow, magenta, and cyan are called the [blank_start]subtractive primary[blank_end] colors
- Asubtractive primary
56When two colors are added together to produce white, these colors are called [blank_start]complementary[blank_end]
- Acomplementary
57What is meant by the word subtraction in the process called color mixing by subtraction?
- Areflection
- Btaking paint out of the paint can
- Cabsorption
58The sky is blue because when light is scattered in the atmosphere by tiny particles the scattered light is at a [blank_start]higher[blank_end] frequency so we see blue.
- Ahigher
59Each element has [blank_start]its own unique[blank_end] glow of color and produce its own characteristic patterns of line spectrum.
- Aits own unique
- Ba familiar looking
- Ca similar looking
- Da couple similar
60Light consists of [blank_start]particles[blank_end] - massless bundles of concentrated electromagnetic energy - later called [blank_start]photons[blank_end]
- Aphotons
- Bparticles
61Light has a dual nature, part [blank_start]particle[blank_end] and part wave
- Aparticle
- Bsound
- Cenergy
- Dwork
62The speed of light is ___
CHOOSE ONE CORRECT ANSWER- A3 x 10⁸ m/s
- B3 x 10³ m/s
- C1,000,000 s
- D1,000 m/s
63A [blank_start]light year[blank_end] is the distance that light travels in one year
- Alight year
64What type of energy is emitted by vibrating electrons in atoms?
- Apotential
- Blight
- Csound
- Dchemicals
65The energy emitted by electrons travels in a wave that is partly electric and partly magnetic, and is called a(n) [blank_start]electromagnetic[blank_end] wave
- Aelectromagnetic
66What electromagnetic waves has a frequency lower than red of visible light
- Ainfrared
- Bultrared
- Cultraviolet
- Dinfraviolet
67What electromagnetic waves has frequency higher than violet of visible light, and are responsible for sunburns?
- Aultrared
- Binfrared
- Cultraviolet
- Dinfraviolet
68Ultraviolet and infrared rays do not travel through [blank_start]glass[blank_end]
- Aglass
69What type of materials absorb light without re emission and thus allow no light through them?
- Aopaque
- Btransparent
- Cglass
- Dwater
70What type of materials allow light to pass through it?
- Aopaque
- Btransparent
- Chumans
- Dwood
71After the collapse of a high mass star, the density becomes infinite and light cannot even escape a ____ pull.
- Alunar
- Bneutrons
- Cblackhole's
- Dsolar
72If the elevator cable broke and the elevator was free falling, your weight would ________
- Astay the same
- Bbe zero
- Cincrease
- Ddecrease
73The point located at the center of an object's mass distribution is called the object's _____
- Acenter of mass
- Bcenter of gravity
- Ccenter of life
- DGeometric center(always)
74Atoms are
- Asmall but can be seen with two microscopes hooked together
- Bsmaller than the wavelength of visible light.
- Csmall but can be seen with a microscope
75A solar eclipse happens when _______
- Athe earth is between the moon and the sun
- Bthe moon is between the earth and the sun
- Cthe sun is between the moon and the earth
76Suppose the gravitational force between two masses is 10 N. If the distance between them the masses is cut into half, what would be the force between them.
- A40 N
- B20 N
- C80 N
- D90 N
77Any force that causes an object to follow a circular path and is "center-seeking" is called ______.
- Acentrifugal
- Bcentriputal
- Cperpendicular
78Even though a baseball bat spins and wobbles when thrown in the air, its center of gravity follows a _____
- Asmooth parabolic path
- Bwobbly path
- Cuneven path
- Dsmooth line
79If the elevator was accelerating down, your weight would
- Adecrease
- Bincrease
- Cstay the same
- Dbe zero
80Which has more rotational inertia? Both have the same mass & diameter.
- Athe endloaded bat
- Bthe solid bat
- Cthey both have the same rotational inertia
81The tangential speed depends on rotational speed and the distance from the axis, so the father out something is out from the axis, the ____ it will go.
- Asame speed
- Bslower
- Cfaster
82Which has a higher density?
- Athey would be the same
- Bpure silver bar
- Cpure silver ring
83Elements heavier than hydrogen have been formed
- Ain the center of the earth
- Bdeep within stars
- Cwhen the universe was created
- Dby collisions in space
84Any outward force that causes an object to follow a circular path and is "center fleeing" is called
- Acentripetal
- Bcentrifugal
- Cperpendicular
85When an object turns about an internal axis like Earth, the motion is called
- Arevolution
- Brotation
- Clinear
- Drevolt
86When an object turns about an external axis like the bug on the record player, the motion is called
- Arevolution
- Brotation
- Clinear
- Drotating
87When there is a half-moon, the tides are lower than average high tides or higher than average low tides. These are called neap tides.
- Asummer
- Bspring
- Cneap
- Dwinter
88Atoms of the same kind make up _____, and there are more than 115.
- Aan element
- Ba compound
- Ca molecule
- Da nucleon
89Pre dominant phase of matter in the universe is _____
- Asolid
- Bliquid
- Cgas
- Dplasma
90Which has a higher density, loaf out of the oven or loaf that has been squeezed to a smaller volume?
- Athey are both the same
- Bthe loaf out of the oven
- Cthe squeezed loaf
91Almost all of the mass of an atom is found in the
- Anucleus
- Bnucleon
- Cproton
- Dneutron
92The density of air ______ with altitude
- Adecreases
- Bincreases
- Cstays the same
93This classifies the element, and is the same as the number of protons in the nucleus.
- AAtomic number
- BAtomic unit
- CAtomic mass
- DAtomic weight
94Suppose the gravitational force between two masses is 5N. If each of the masses are doubled, what would the force between them?
- A10 N
- B14 N
- C28 N
- D20 N
95If a object moves father from Earth's surface, the gravity will become _____.
- Amore
- Bstays the same
- Cless
96What is the density of a toy that has amass of 150 grams and a volume of 50 cubic centimeters?
- A5000 g*cubic cm
- B3 g/cubic cm
- C0.5 cubic cm/g
97The distance from the turning point of contact is called the
- Alever arm
- Bforce applied
- Crotational speed
98If an object topples over, its center of gravity ________ the support base.
- Ais over the middle of
- Bis at the edge of
- Cextends beyond
99Which law states that the product of the pressure and volume for a given mass of gas is constant as long the temperature does not change?
- ANewton's
- BBoyle's
- CPasal's
- DArchimedes'
100 Barometer is an instrument used for measuring the
- Apressure of the atmosphere
- Bthe weight of water
- Cthe mass of water
- Dthe mass of air
101The lightest element, which makes up 90% of all atoms in the universe is ____
- Aoxygen
- Bhydrogen
- Cnitrogen
- Dhelium
102Rotational speed with direction is ______
- Arotational velocity
- Blinear speed
- Clinear velocity
103When the number of electrons is more or less than the number of protons in an atom, the atom becomes charged and is called
- Aan isotope
- Ba proton
- Ca neutron
- Dan ion
104Atoms that combine to form larger particles are called
- Aelements
- Bisotopes
- Cmolecules
- Dnucleons
105When angular momentum is conserved and a figure skater pulls their arms in, what will increase?
- Atime
- Brotational inertia
- Crotational velocity
- Dlife
106What is the constant used to make the gravitational force equal instead of proportional
- Agravity constant
- Buniversal gravitational constant
- Cproportional constant
107The barometer "balances" when the weight of liquid in the tube exerts __ pressure as the atmosphere outside.
- Amore
- Bless
- Cthe same
108An altimeter is calibrated to read
- Aaltitude
- Bamplitude
- Cdirection
- Drange
109An object surrounded by fluid is buoyed up a force equal to the weight of the fluid displaced. What principle is this?
- AArchimedes'
- BBernoulli's
- CBoyle's
- DPascals
110To increase torque, you can increase
- Aeither perpendicular force or lever arm distance
- Bneither perpendicular force or lever arm distance
- Cperpendicular force
- Dlever arm distance
111If a object raises its center of gravity and requires work to topple over, the object is said to be in ________ equilibrium.
- Aunstable
- Bstable
- Cneutral
112The Earth's ____ keeps the gases from escaping into space.
- Acrust
- Bvolcanoes
- Cgravity
- Dsunlight
113When angular momentum is conserved and a figure skater pulls their arms in, what will decrease
- Alife
- Brotational velocity
- Crotational inertia
- Dtime
114In what phase of matter is where the atoms and molecules vibrate about fixed postions.
- Aplasma
- Bliquid
- Cgas
- Dsolid
115The point located at the center of an object's weight distrubtution is called the object's
- Acenter of gravity
- Bcenter of mass
- Ccenter of life
- Dgeometric center (always)
116Steel is a strong metal that is very
- Ainelastic
- Belastic
117Ocean tides are caused by
- Adifferences in forces between opposite parts of the Earth and the moon
- Bgravity stuff
- Cdifferences in force between Mars and Venus
118A lunar eclipse happens when
- Athe sun is between the moon and the earth
- Bthe earth is between the moon and the sun
- Cthe moon is between the earth and the sun
119The moon will not fall into the Earth. It actually falls _____ the Earth.
- Aaround
- Bby
- Cinto
120Atmospheric pressure is caused by
- Athe mass of the air
- Bthe mass of water
- Cthe weight of the air
- Dthe weight of water
121If a object lowers its center of gravity and can easily topple over, the object is said to be in _____ equilibrium.
- Aunstable
- Bstable
- Cneutral
122If a balloon continuously flies up into the atmosphere, what will happend to its volume
- Astays the same
- Bincrease
- Cdecrease
123The moon will not fall into the Earth because of its
- Atangential velocity
- Bsize
- Cdistance
- Dgravity
124The resistance of an object to change its rotational motion is called rotational ____
- Amomentum
- Btorque
- Cacceleration
- Dinertia
125The molecules of the gases in the atmosphere are energized by _______ and kept in continual motion
- Athe moon
- Bgravity
- Csunlight
- Dearth's crust
126What causes a birds wings oto lift when they are fully extended
- AThe high pressure from the top and the low pressure from the bottom of the wings
- BThe strength of their flapping of their wings only
- CThe low pressure from the top and the high pressure from the bottom of the wings
127If the weight at the end of a spring is quadrupled, then the distance is
- Atripled
- Bquadrupled
- Cstays the same
- Ddoubled
128If a perpendicular force of 5N is applied 2 meters away, what is the torque applied?
- A20 N
- B20 N m
- C10 N m
- D10 N
129The "inertia of rotation" of a rotating objects is called __________ momentum
- Aangular
- Blinear
- Ccircular
- Drotation
130Bernoulli's Principle states that when the speed of a fluid increases, the pressure
- Araises
- Bdrops
- Cstays the same
131A balanced torque is when the torque clockwise _______ the torque counterclockwise
- Aequals
- Bis twice as much as
- Cis different than
- Dis half as much as
132When there is a new moon and the moon is in between the Earth and the Sun, the tides are higher or lower than average. These are called ______ tides.
- ASpring
- BSummer
- CNeap
- DWinter
133The chrage is represented by
- AR
- BI
- Cq
- DV
134What type of material has electrons that easily move in the material?
- Aconductors
- Binsulators
- Cplastic
- Dglass
135Electrial potential is measured in
- AVolts
- Bamperes
- COhms
- Dresistance
136What flows when there is a potential difference (V)?
- Aresistance
- Blight
- Clove
- Dcharge
137Electric _______ is simply the flow of electric charge, and is measured in ________
- Acurrent, amprees
- Bamprees, current
- Ccurrent , volts
138Electric __________ is the resistance of the charge to flow, and its units are ___________.
- Aohms, resistance
- Bvoltage, amps
- Ccurrent, volts
- Dresistance, ohms
139Ohm's law can be written as
- AV=IR
- BF=ma
- CK=1/2mv
- DP.E=mgh
140What is the voltage of a electrical circuit that has a resistance of 2 ohms and a current of 3 amps?
- A2/3 V
- B3/2 V
- C6 V
- D9 V
141Water is a good _________ of electricity.
- Ainsulator
- Bconductor
- Cstorage
- Dlight
142A _________ is any path along which electrons can flow
- Aresistor
- Bcapacitor
- Ccircuit
143What is the resistance in a circuit that has two 20 ohm resistors in series?
- A50 ohms
- B20 ohms
- C40 ohms
- D10 ohms
144What is the resistance in a circuit that has two 20 ohm resistors in parallel?
- A50 ohms
- B20 ohms
- C10 ohms
- D40 ohms
Información
- Descripción
- 10th grade Physics Test sobre Physics Study for Final, creado por ch1lly spirit el 01/12/2021.
- Autor
- ch1lly spirit
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- English
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