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Physics > 1st Semster Test > Flashcards

1st Semster Test Flashcards

0
Q

The prefix kilo means

A

1000

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1
Q

What involves the study of matter and it’s motion through space ad time

A

Physics

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2
Q

The correct symbol for the SI unit of temperature is

A

K

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3
Q

The SI unit that is used to measure time is the

A

Second

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4
Q

The variable plotted in the horizontal or x- axis is called the

A

Independent variable

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5
Q

How many meters are there in 1,865 cm

A

18.65

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6
Q

The best type if graph to use to show how some fixed quantity is broken down into parts is

A

Circle graph

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7
Q

A beaker contains 0.32 L of water. What is the volume of this water in milliliters

A

600

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8
Q

Another term for technology is

A

Applied science

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9
Q

The process of gathering information through the senses is called

A

Observation

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10
Q

When designing and experiment, the first step is to

A

State the problem

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11
Q

A factor that is manipulated in an experiment to change the dependent variable is the

A

Independent variable

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12
Q

A rule or principle that describes what happens in nature is a

A

Scientific law

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13
Q

What is a system of knowledge and the Mathias used to find that knowledge

A

Science

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14
Q

An explanation if an event that is based on repeated observations and experiments is a

A

Theory

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15
Q

What are the building blocks of all matter

A

Atoms

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16
Q

An idea, event, or object can be represented by. To help people better understand it

A

Model

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17
Q

A standard for comparison that helps to ensure that the experimental result is caused by the condition being

A

Control

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18
Q

A factor in an experiment that changes from the manipulation of the independent variable is the

A

Dependent variable

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19
Q

A factor that does NOT change in an experiment is the

A

Constant

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20
Q

Studying the effect if one thing on another in order to yet a hypothesis is an

A

Experiment

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21
Q

Motion is a change in

A

Position

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22
Q

3m/s north is an example of

A

Velocity

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23
Q

A merry go round horse moves at a constant speed but at a changing

A

Velocity

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24
Q

Acceleration is rate of change of

A

Velocity

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25
Q

A horizontal line on a velocity/ time graph shows

A

Same speed

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26
Q

Inertia varies depending on

A

Mass

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27
Q

Newton’s first law of motion is also called the law of

A

Inertia

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28
Q

What is the speed of a bobsled whose distance time graph indicators that it traveled 100 m in 25 s

A

4 m/s

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29
Q

Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1s. What is your acceleration?

A

2 m/s

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30
Q

The upward force on an other falling through the air is

A

Air resistance

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31
Q

The relationship among mass, force, and acceleration is explained by

A

Newton’s second law of motion

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32
Q

A feather will fall through that air more slowly than a brick because of

A

Air resistance

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33
Q

The acceleration due to gravity is

A

9.8 m/s

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34
Q

According to Newton’s second law of motion

A

F=mxa

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35
Q

When an object moves in a circular path, it accelerates toward the center of the circle as a result of

A

Centripetal force

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36
Q

The path of a projectile is

A

Curved

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37
Q

For an object, the greater the force that’s applied to it, the grater its ___ will be

A

Acceleration

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38
Q

The size of the gravitational force between two objects depends on their

A

Masses and distance between them

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39
Q

When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called _____ forces

A

Action-reaction

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40
Q

The statement “to every action there is an equal and opposite reaction” is

A

Newton’s third law of motion

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41
Q

A 300 N force acts on a 25 kg object. The acceleration of the object is

A

12 m/s 2

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42
Q

The SI unit of force is the

A

Newton

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43
Q

When an unbalanced force acts on an object

A

The objects accelerates

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44
Q

What is the momentum of a 50 kilogram ice skater gliding across the ice at a speed of 5m/s

A

250 kg•m/s

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45
Q

The rate at which work is done is called

A

Power

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46
Q

The unit of power is the

A

Watt

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47
Q

If you exert a force of 10.0 N to lift a box a distance of .09 m, how much do you do

A

9.0 J

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48
Q

The kinetic energy of an object increase as its ____ increases

A

Velocity

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49
Q

The SI unit for energy is the

A

Joule

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50
Q

A bus engine transfers chemical potential energy into _____ so that the bus moves

A

Kinetic energy

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51
Q

In a nuclear fusion reaction mass is transformed into

A

Energy

52
Q

According to the law of conservation of energy the total amount of energy in the universe

A

Is never created or destroyed but changes forms

53
Q

A material that reduces the flow of heat by conduction convection and radiation

A

An insulated

54
Q

The transfers of energy that does not require matter is

A

Radiation

55
Q

Energy from the sun travels to earth as

A

Radiant energy

56
Q

The process by which engine fuels burn is called

A

Combustion

57
Q

A device that converts thermal energy into mechanical energy is a

A

Heat engine

58
Q

The energy of motion is called

A

Kinetic energy

59
Q

A small 20 kilogram canoe is floating downriver at a speed of 2 m/s what is the canoes kinetic energy

A

It’s speed

60
Q

A 4 kilogram cat is resting on top of a bookshelf that is 3 meters high. What is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8 m/s 2

A

118 J

61
Q

Which of the following increases when an object becomes warmer

A

Thermal energy

62
Q

The energy stored in gasoline is

A

Chemical energy

63
Q

The mechanical energy of an object equals it’s

A

Kinetic energy plus it’s potential energy

64
Q

Fossil fuels currently account for the majority of the worlds energy use because they are

A

Relatively inexpensive and readily available

65
Q

Heat is the transfer of thermal energy from one object to another because of a difference in

A

Temperature

66
Q

What property of an object is related to the average kinetic energy of the particles in that object

A

Temperature

67
Q

In the formula Q=mxcxtriangleT which quantity represents the specific heat

A

C

68
Q

Matter that has a definite volume and a definite shape is a

A

Solid

69
Q

Matter that has a definite volume but no definite shape is a

A

Liquid

70
Q

Most matter ____ when heated

A

Expands

71
Q

The theoretical point at which all molecular motion stops is called

A

Absolute zero

72
Q

What is the SI unit of pressure

A

The pascal

73
Q

Which of the following states bernoulli’s principle

A

As the speed if a fluid increases the pressure within the fluid decreases

74
Q

According to _____ the buoyant force on an object in a fluid is equal to the weight if the fluid displaces by the object

A

Archimedes principle

75
Q

According to ____ as the velocity of a fluid increases the pressure exerted by the fluid decreases

A

Bernoulli’s principle

76
Q

According to ______ pressure applies to a fluid is transmitted unchanged throughout that fluid

A

Pascal principle

77
Q

The upward force acting on an object submerged in a fluid is called

A

Buoyant force

78
Q

The most common state of matter in the universe is

A

Plasma

79
Q

A fluid’s resistance to flow is called

A

Viscosity

80
Q

When you squeeze together the coils of a spring and then release them you are creating a ___ wave

A

Compressional

81
Q

You are creating a wave on a spring if you start shaking the spring more slowly the wave length of the resulting wave will

A

Increases

82
Q

The energy a wave carries is measured by its

A

Amplitude

83
Q

You can see this paper your desk and the person in front of you because light is being

A

Reflected

84
Q

When a wave passes from a less dense medium to a more dense medium the _____ may change

A

Speed

85
Q

When the crest of one wave passes through the trough of another wave _____ take place

A

Destructive interference

86
Q

Sound travels in a ____ waver

A

Compressional

87
Q

The speed of sound in _____ is greater than the speed of sound in water

A

Loudness

88
Q

The unit uses to measure frequency is the

A

Hertz

89
Q

For the Doppler effect to occur ____

A

Either source or listener must be moving

90
Q

Reverberation in concert halls is caused by ____ of sound

A

Reflections

91
Q

A system of using the reflection of underwear sound waves is

A

Sonar

92
Q

Electromagnetic waves

A

Are transverse waves

93
Q

The _____ is the particle that carries radiant energy

A

Photon

94
Q

Electromagnetic radiation with the shortest wavelengths is

A

Gamma rays

95
Q

The frequency of purple light is _____ that if yellow light

A

Higher than

96
Q

_____ are used for medical imaging

A

X rays

97
Q

Gamma rays are dangerous because they

A

Break down molecules and cells

98
Q

AM wave frequencies are _____ FM frequencies

A

Lower than

99
Q

FM. Frequencies are in the range of

A

Radio waves

100
Q

Television uses _____ to transmit signals

A

Radio waves

101
Q

What wavelength of light is reflected from a red shirt

A

Red

102
Q

The primary pigment colors are

A

Magenta cyan and yellow

103
Q

The color _____ is produced by blending the three primary pigments

A

Black

104
Q

If light waves change speed when they pass from one medium into another the light will be

A

Refracted

105
Q

The primary light colors are

A

Red blue green

106
Q

The color _____ is produced by blending the three primary colors of ligh

A

White

107
Q

Any smooth surface that reflects light to form an image is a

A

Mirror

108
Q

The bowl of a shiny spoon forms an enlarged upright image similar to that of a _____ mirror

A

Concave

109
Q

_____ are thick in the middle and thin at the edges

A

Convex lenses

110
Q

The image formed by a plane mirror is

A

Upright and reverses

111
Q

Light is refracted and spread out by a

A

Concave lens

112
Q

Resistance is measured in a unit called

A

Ohm

113
Q

The statement that current is equal to the voltage difference divided by the resistance is known as

A

Ohm’s law

114
Q

A path that allows only one route for an electric current is called

A

Series circuit

115
Q

Electric charge that had accumulated on an object is referred to as

A

Static electricity

116
Q

A material through which electrons do not easily flow is an

A

Insulator

117
Q

Lightning is

A

A large discharge of static electricity

118
Q

One source of constant electric current is a

A

Dry cell battery

119
Q

Which of the following is a designed to open an overload circuit and prevent overheating

A

Circuit breaker

120
Q

A device that increases or decreased voltage in a power line is a

A

Transformer

121
Q

Current that does not reverse direction is called

A

Direct current

122
Q

Current that reverses direction Ina regular pattern is called

A

Alternating current

123
Q

What creates magnetic field

A

Moving electric charges

124
Q

Which if the following particles is smaller than rest

A

Electron

125
Q

I what star must matter exist for fusion reactions to take place

A

Electron

126
Q

In what state must matter exist for fusion reaction to take place

A

Plasma

127
Q

What is the resistance of a circuit that has a voltage of 90 and a current of 9 amps

A

10 ohms

128
Q

What is the current of a circuit is the voltage is 120 volts and the resistance is 4 ohms

A

30 amps

Physics (8 decks)

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