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Q 1/230
Score 0
the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested
30
Science
Q 2/230
Score 0
the application of scientific knowledge for practical purposes; the use of tools, machines, materials, and process to help human needs.
30
Technology
230 questions
Q.
the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested
1
30 sec
Q.
the application of scientific knowledge for practical purposes; the use of tools, machines, materials, and process to help human needs.
2
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a descriptive statement or equation that reliably predicts events under certain conditions.
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a system of ideas that explains many related observations and is supported by a large body of evidence acquired through scientific investigation
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the ability and willingness to assess claims critically and to make judgments on the basis of objective and supported reasons
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A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
6
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a measure of the straight-line distance between two points
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A measure of the size of a body or region in three-dimensional space
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a measure of the amount of matter in an object; a fundamental property of an object that is not affected by the forces that act on the object, such as the gravitational force
9
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A measure of the force of the gravitation force exerted on an object, it value can change with its location in the universe
10
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A factor that can changes in an experiment in order to test an hypothesis
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A description of how close a measurement is to the true value of the quantity measured.
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the exactness of a measurement
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a method of expressing a quantity as a number multiplied by 10 to the appropriate power
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a prescribed decimal place that determines the amount of rounding off to be done based on the precision of the measurement
15
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a determination of the amount of something. A measurement has two parts: a value and a unit
16
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a fixed amount of something, like a centimeter (cm) of distance
17
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measurement system used for everyday measurements in the United States
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International System of Units, used by most countries for everyday measurement and used by the scientific community worldwide
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how close a measurement is to an accepted or true value
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describes how close together or reproducible repeated measurements are
21
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refers to the smallest interval that can be measured
22
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the amount of space between two points
23
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a measured distance
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a basic SI unit of length
25
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(ly) the distance light travels through space in one year. One light year is equal to 9.46 x 1012 km
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a ratio that has a value of one and is used when setting up a unit conversion problem
27
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a method of using conversion factors and unit canceling to solve a unit conversion problem
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meaningful digits in a measured quantity
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a visual representation of data
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a graph of two variables through to be related
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a variable that you believe might influence another variable
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the variable you believe is influenced by the independent variable
33
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a relationship in which one variable increases with an increase in another variable
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a relationship in which one variable decreases when another variable increases
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the amount of matter an object contains.
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the amount of space occupied by matter.
37
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A push or pull that acts on an object
38
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A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second
39
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The overall force acting on an object after all the forces are combined
40
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A force that opposes motion between two surfaces that are in contact
41
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Friction that acts on objects that are not moving
42
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friction that occurs when one solid surface slides over another
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friction that occurs when an object rolls over a surface
44
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a friction force that opposes the motion of an object through a fluid
45
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a type of fluid friction on which objects falling through air experience upward force
46
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A force that pulls objects toward each other
47
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the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity
48
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the motion of a falling object after it is given an initial forward velocity
49
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(physics) the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force
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A measure of the amount of matter in an object
51
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A measure of the force of gravity on an object
52
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an attractive force that acts between any two objects
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A force that causes an object to move in a circle
54
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An object in motion stays in motion and an object at rest stays at rest UNLESS acted upon by an UNBALANCED force!
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Net Force = Mass * Acceleration
56
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Forces always come in pairs. For every action force there is an equal and opposite reaction force.
57
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Mass in motion. Depends on an objects Mass as well as its velocity!
58
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When a material can stick to itself
59
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The friction that slows an object as it moves through air or water
60
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A substance that reduces friction
61
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The law that says the closer things are to one another, the more powerful the attraction
62
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A shape that allows an object to move through fluids and air without as much drag
63
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The maximum speed an object cal fall; the speed limit for falling objects
64
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A force that holds back the movement of an object.
65
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Sticking together of two different materials
66
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The friction between two objects that keeps them from sliding across each other
67
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A force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.
68
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A force that attracts everything toward the center of the earth.
69
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A tool that allows to use force in a convenient way.
70
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A simple machine consisting of a wheel with a groove in it which allows a rope (string, wire, etc.) to be pulled around it.
71
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A decimal-based measuring system used by much of the world and the entire scientific community.
72
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A special type of gear that has its ratio measured by the angle of its threads.
73
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A surface used for joining two different levels.
74
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When a force (push or pull) moves an object.
75
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See image
76
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The ratio of the speed of rotation of the powered gear to that of the final driven gear.
77
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A simple machine that uses a fulcrum point.
78
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The pivot point on a lever.
79
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The amount of work you can do during a certain length of time.
80
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The metric measurement most scientists use to measure work.
81
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A simple machine that has an inclined surface, like a ramp.
82
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A pulley that can freely move. Example is elevators.
83
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Visible energy.
84
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In science, the idea that energy can never be created or destroyed.
85
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Stored energy.
86
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The Energy of Motion.
87
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A machine that uses an axle and a lever to gether to lift objects.
88
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Energy stored as chemical potential, such as a battery.
89
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The ability to do work.
90
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The ratio of the density of a substance to the density of a standard, usually water for a liquid.
91
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An instrument that measures the specific gravity (relative density) of liquids.
92
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The ratio of the force produced by a machine to the effort (force) applied to it.
93
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A combination of two or more simple machines.
94
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A repeating path in space that takes one object around another.
95
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Fulcrum is in the middle. Example: scissors
96
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Resistance (load) is in the middle. Example: nutcracker
97
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Effort is in the middle. Example: tweezers
98
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Something that changes the motion and/or shape of an object.
99
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A force between two objects rubbing together that resists motion and produces heat.
100
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A process for experimentation that usually includes an observation, hypothesis, experiment, and theory.
101
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Anything that is observed that is consistent (happens the same each time.)
102
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A scientist's "best guess" of why something is happening.
103
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A scientist's conclusion of why something happens the way it does.
104
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A returning force.
105
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A substance that reduces friction between two moving forces.
106
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A substance that flows with relative ease. Examples: water (liquids) and air (gas)
107
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A force that pulls all things toward each other.
108
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The amount of matter in an object.
109
30 sec
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Italian scientist who discovered that all things fall at the same speed (among other things).
110
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The inward force on an object following a curved path.
111
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The amount of force on a given surface area.
112
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The upward pushing force of a fluid against an object that is pushing down.
113
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The tendency of objects to resist a change in motion.
114
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The distance traveled divided by the amount of time it took.
115
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The rate of change in velocity over time.
116
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The speed of an object in a certain direction.
117
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Straight line change in position of an object.
118
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The amount of gravitational force acting on an object.
119
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A quantity described by magnitude and direction.
120
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A non-moving object used to describe a moving object.
121
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Pressure in a fluid decreases as the speed of the fluid increases.
122
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An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
123
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Force is equal to mass times acceleration [F = MA].
124
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For every action there is an equal and opposite reaction.
125
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The amount of mass of a substance per unit volume.
126
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Something that changes the motion and/or shape of an object.
127
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A scientist's conclusion of why something happens the way it does.
128
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The amount of matter in an object.
129
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The tendency of objects to resist change in motion.
130
30 sec
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A directional force with direction and magnitude.
131
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Q.
An engine that uses heat energy to create mechanical energy.
132
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An object that is in orbit with another object.
133
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A force that resists motion and produces heat.
134
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A returning force.
135
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A scientist from the 16-17th centuries who conducted experiments dealing with the Earth's gravitational field.
136
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How fast an object travels; distance/time
137
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The system of planets around the Sun.
138
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The study of the mechanics of how fluids flow.
139
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A method of conducting science that includes an observation, hypothesis, experiment, theory, and fact.
140
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A material that reduces friction between two objects.
141
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Q.
A force that continually pulls a spinning object toward its center.
142
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When an object starts gaining speed.
143
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The decrease of the pressure in a fluid as the speed increases.
144
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A repeating path in space an object takes around another.
145
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Something that can be seen and observed consistently happen.
146
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A substance that flows with relative ease.
147
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The amount of force on a given amount of surface area.
148
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Q.
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction.
149
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The straight line change in the position of an object.
150
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Q.
A strong tide that happens when the Sun and the Moon are aligned with the Earth.
151
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Q.
An educated guess that comes after an observation.
152
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Q.
A force that pulls objects towards each other.
153
30 sec
Q.
The upward pushing force of a fluid against an object that is pushing down against the fluid.
154
30 sec
Q.
The speed of an object in a certain direction.
155
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Q.
An instrument that is used to compare the density of liquids to water.
156
30 sec
Q.
A weaker tide and happens when the Sun and the Moon are not aligned with the Earth.
157
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Q.
The studies of matter and energy
158
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Those special features, traits, or attributes of materials found in the universe
159
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The amount of space something takes up
160
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To replace matter with another kind of matter or to move matter
161
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How much mass is in a certain volume of matter
162
30 sec
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The ability of something to float and spread out with high slides
163
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The amount of shine something has
164
30 sec
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Bendable materials
165
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When material can be changed into a different shape without breaking, unbreakable
