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Q 1/334
Score 0
Friction between two moving surfaces
30
Kinetic Friction
Q 2/334
Score 0
When a force is applied to an object but does not cause the object to move
30
Static Friction
334 questions
Q.
Friction between two moving surfaces
1
30 sec
Q.
When a force is applied to an object but does not cause the object to move
2
30 sec
Q.
A testable question that includes an independent and dependent variable
3
30 sec
Q.
The thing that is being tested in your experiment. The thing that you change from trial to trial.
4
30 sec
Q.
The thing that tells you if the independent variable makes a difference. It changes as a response to the change you make in the experiment.
5
30 sec
Q.
The things in an experiment that must be kept the same.
6
30 sec
Q.
The surface of every object is rough
7
30 sec
Q.
the hills and valleys of one surface stick to the hills and valleys of the other surface
8
30 sec
Q.
Force pushing surfaces together and roughness of the surfaces
9
30 sec
Q.
friction increases
10
30 sec
Q.
exert less downward force than objects that weigh more
11
30 sec
Q.
does not change the amount of friction
12
30 sec
Q.
the greater the friction is
13
30 sec
Q.
Sliding books across a table
14
30 sec
Q.
push furniture --> doesn't move
15
30 sec
Q.
moving energy
16
30 sec
Q.
how the surfaces move
17
30 sec
Q.
easier than sliding friction
18
30 sec
Q.
not moving
19
30 sec
Q.
balances force applied
20
30 sec
Q.
applying a large enough force
21
30 sec
Q.
harmful and helpful
22
30 sec
Q.
Substances applied to surfaces to reduce friction between surfaces
23
30 sec
Q.
motor oil, wax, grease, usually liquids
24
30 sec
Q.
use fine grain sandpaper
25
30 sec
Q.
lubricants, make surfaces smoother, switch to rolling kinetic
26
30 sec
Q.
make surfaces rougher, increase force, increas mass
27
30 sec
Q.
more friction
28
30 sec
Q.
A force of attraction between objects that is due to their masses.
29
30 sec
Q.
A measure of the amount of matter in an object.
30
30 sec
Q.
A measure of the force of gravity on an object.
31
30 sec
Q.
A force that opposes motion between two surfaces that are in contact with each other.
32
30 sec
Q.
Friction that occurs when one solid surface slides over another.
33
30 sec
Q.
A friction force that acts on objects that are not moving.
34
30 sec
Q.
Friction that occurs as an object moves through a fluid (gas or liquid).
35
30 sec
Q.
Friction that occurs when an object rolls over a surface.
36
30 sec
Q.
A push or a pull.
37
30 sec
Q.
A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second.
38
30 sec
Q.
The combination of all forces acting on an object.
39
30 sec
Q.
The motion of a falling object when forces are unbalanced, causing acceleration.
40
30 sec
Q.
When an object that is in free fall no longer accelerates. The upward force of air resistance, balances the downward force of gravity, therefore forces become balanced.
41
30 sec
Q.
A force between two objects rubbing together that resists motion and produces heat.
42
30 sec
Q.
A process for experimentation that usually includes an observation, hypothesis, experiment, and theory.
43
30 sec
Q.
Anything that is observed that is consistent (happens the same each time.)
44
30 sec
Q.
A scientist's "best guess" of why something is happening.
45
30 sec
Q.
A scientist's conclusion of why something happens the way it does.
46
30 sec
Q.
A returning force.
47
30 sec
Q.
A substance that reduces friction between two moving forces.
48
30 sec
Q.
A substance that flows with relative ease. Examples: water (liquids) and air (gas)
49
30 sec
Q.
A force that pulls all things toward each other.
50
30 sec
Q.
The amount of matter in an object.
51
30 sec
Q.
Italian scientist who discovered that all things fall at the same speed (among other things).
52
30 sec
Q.
The inward force on an object following a curved path.
53
30 sec
Q.
The amount of force on a given surface area.
54
30 sec
Q.
The upward pushing force of a fluid against an object that is pushing down.
55
30 sec
Q.
The tendency of objects to resist a change in motion.
56
30 sec
Q.
The distance traveled divided by the amount of time it took.
57
30 sec
Q.
The rate of change in velocity over time.
58
30 sec
Q.
The speed of an object in a certain direction.
59
30 sec
Q.
Straight line change in position of an object.
60
30 sec
Q.
The amount of gravitational force acting on an object.
61
30 sec
Q.
A quantity described by magnitude and direction.
62
30 sec
Q.
A non-moving object used to describe a moving object.
63
30 sec
Q.
Pressure in a fluid decreases as the speed of the fluid increases.
64
30 sec
Q.
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.
65
30 sec
Q.
Force is equal to mass times acceleration [F = MA].
66
30 sec
Q.
For every action there is an equal and opposite reaction.
67
30 sec
Q.
The amount of mass of a substance per unit volume.
68
30 sec
Q.
Anything that has mass and has volume (takes up space)
69
30 sec
Q.
A measure of how much matter is in an object
70
30 sec
Q.
Characteristics of matter that helps identify or classify matter
71
30 sec
Q.
The ability or tendency to float in water, air or some other fluid
72
30 sec
Q.
The ability to bend or be molded into a different shape
The branch of science that studies the nature and properties of matter and energy
76
30 sec
Q.
The amount of space that matter occupies
77
30 sec
Q.
To replace matter with another kind of matter or to move matter
78
30 sec
Q.
The measurement of how much mass is in a certain in a given volume
79
30 sec
Q.
A gentle sheen of soft glow
80
30 sec
Q.
The ability of a material to be hammered thin or stretched into wire without breaking
81
30 sec
Q.
The process scientist use to conduct an investigation/experiment
82
30 sec
Q.
An act of noting and recording what you hear, touch, taste, smell and see
83
30 sec
Q.
A statement of what will cause an effect
84
30 sec
Q.
A general statement about what happened during the experiment
85
30 sec
Q.
The tiny particles that make up matter and the smallest unit of an element
86
30 sec
Q.
A measure of how much matter is in an object
87
30 sec
Q.
Occurs when matter has changed in size, shape, or state of matter but not identity
88
30 sec
Q.
When matter has changed from one substance to another (changing the identity)
89
30 sec
Q.
a force that holds back the movement of an object.
90
30 sec
Q.
the friction between two objects that keeps them from sliding across each other.
91
30 sec
Q.
the sticking together of two different materials.
92
30 sec
Q.
the material sticking to itself.
93
30 sec
Q.
that adhesion happens on the molecular level.
94
30 sec
Q.
a substance that reduces friction.
95
30 sec
Q.
the friction that slows an object as it moves forward through air or water.
96
30 sec
Q.
when an object is shaped in a way that enables it to travel through the air much more easily.
97
30 sec
Q.
the force that pulls something toward the center of the earth.
98
30 sec
Q.
objects that are closer pull with more strength than objects that are farther away.
99
30 sec
Q.
when an object will continue to move at the same velocity; it will not speed up or slow down.
100
30 sec
Q.
a force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.
101
30 sec
Q.
In this state of matter the particles are tightly linked together. This state of matter holds its own shape.
102
30 sec
Q.
In this state of matter the molecules are loosely linked. This state of matter takes the shape of its container.
103
30 sec
Q.
Matter that does not have a definite shape or volume; has particles that move at high speeds in all directions.
104
30 sec
Q.
The thickness, or resistance to flow, of a liquid
105
30 sec
Q.
The temperature at which a liquid turns into a solid.
106
30 sec
Q.
The temperature at which a liquid turns into a gas.
107
30 sec
Q.
The temperature at which a solid turns into a liquid.
108
30 sec
Q.
The temperature that makes a gas turn into a liquid.
109
30 sec
Q.
Like and invisible "skin" that is formed because water molecules have special bonds that hold them together.
110
30 sec
Q.
Changing from a liquid to a gaseous vapor. When water is heated it forms a white mist of minute water droplets in the air (steam).
111
30 sec
Q.
compressed gas
112
30 sec
Q.
0 degrees celsius or 32 degrees fahrenheit
113
30 sec
Q.
100 degrees celsius or 212 degrees fahrenheit
114
30 sec
Q.
The studies of matter and energy
115
30 sec
Q.
A molecule of 2 hydrogen, 1 oxygen
116
30 sec
Q.
Those special features, traits, or attributes of materials found in the universe
117
30 sec
Q.
The amount of space something takes up
118
30 sec
Q.
To replace matter with another kind of matter or to move matter
119
30 sec
Q.
How much mass is in a certain volume of matter
120
30 sec
Q.
The ability of something to float and spread out with high slides
121
30 sec
Q.
The amount of shine something has
122
30 sec
Q.
Bendable materials
123
30 sec
Q.
When material can be changed into a different shape without breaking, unbreakable
124
30 sec
Q.
Whether or not an object can be made into a wire
125
30 sec
Q.
Greek scientist, philosopher, 4th century
126
30 sec
Q.
Unable to prove observations due to lack of experiments, accurate measuring tools (clocks, rulers), and ability to be precise
127
30 sec
Q.
Italian & Christian astronomer and mathematician (1564-1642); first to use a telescope to study the stars; performed experiments and math to prove observations
128
30 sec
Q.
1) Time for complete swing for small and large arcs is same
129
30 sec
Q.
See image
130
30 sec
Q.
Principles of pendulum used to make
131
30 sec
Q.
distance/time; constant without outside force
132
30 sec
Q.
Meters per second (m/s) or miles per hour (mph)
133
30 sec
Q.
total distance divided by total time - because falling object is constantly accelerating
134
30 sec
Q.
Same, regardless of size or mass
135
30 sec
Q.
9.8 m/s^2 or 32 ft/s/s
136
30 sec
Q.
Moves in direction of greater force
137
30 sec
Q.
the science of matter and energy and their interactions
138
30 sec
Q.
Pursuit and application of knowledge and understanding of the natural world following a systematic methodology based on evidence
139
30 sec
Q.
Proving things through experimentation using the scientific method
140
30 sec
Q.
An object moving through the air, subject only to the force of gravity
141
30 sec
Q.
The parabolic path of a projectile
142
30 sec
Q.
A device, when released, will launch a sphere horizontally and at the exact same moment, it will drop a ball with a hole in the middle. Which of these will strike the ground first? At what rate will they fall?
143
30 sec
Q.
What are some examples of horizontally launched projectiles?
144
30 sec
Q.
Horizontal and vertical motions are completely __________ of each other
145
30 sec
Q.
If the horizontal and vertical motions are independent of each other, what can the velocity vector of the projectile be separated into?
146
30 sec
Q.
Projectiles *always* maintain a constant ____________ velocity (neglecting air resistance)
147
30 sec
Q.
What is the *only* variable shared by *both* types of motion (horizontal and vertical)
148
30 sec
Q.
What is the vertical velocity at the highest point of a projectile's flight?
149
30 sec
Q.
For a projectile beginning and ending at the same height, the time it takes to rise to its highest point is equal to what?
150
30 sec
Q.
When an object is dropped from a moving vehicle, what is its velocity?
151
30 sec
Q.
When you are working projectile exercises, what must you consider?
152
30 sec
Q.
The slope of a velocity vs. time graph yields the ___________ of a moving object.
153
30 sec
Q.
Only the _____________ component of a projectile accelerates due to gravity.
154
30 sec
Q.
The slope of the line on a distance vs. time graph shows the ____________ of a moving object.
155
30 sec
Q.
Magnitude
156
30 sec
Q.
Accelerate
157
30 sec
Q.
See image
158
30 sec
Q.
Vector
159
30 sec
Q.
See image
160
30 sec
Q.
Scalar
161
30 sec
Q.
What is Displacement?
162
30 sec
Q.
What is Distance?
163
30 sec
Q.
What is Mass?
164
30 sec
Q.
What is Weight?
165
30 sec
Q.
What is Average Speed?
166
30 sec
Q.
The place occupied by an object is its _____________ .
167
30 sec
Q.
Origin
168
30 sec
Q.
Position
169
30 sec
Q.
See image
170
30 sec
Q.
See image
171
30 sec
Q.
vector
172
30 sec
Q.
magnitude
173
30 sec
Q.
Pythagorean Theorem
174
30 sec
Q.
Head to Tail Method
175
30 sec
Q.
Resultant
176
30 sec
Q.
cosine function
177
30 sec
Q.
sine function
178
30 sec
Q.
tangent function
179
30 sec
Q.
vector resolution
180
30 sec
Q.
component addition
181
30 sec
Q.
Resultant of 2 vectors is smallest when the angle between them is_ _ _ degrees
182
30 sec
Q.
What is a frame of reference?
183
30 sec
Q.
What is a coordinate system?
184
30 sec
Q.
What are coordinates?
185
30 sec
Q.
What is a point of origin?
186
30 sec
Q.
What is a position?
187
30 sec
Q.
What is a distance?
188
30 sec
Q.
SI Base Unit of measure: seconds. What is it?
189
30 sec
Q.
A change in the value of a variable is determined by?
190
30 sec
Q.
What describes the speed of a change of position over an interval of time. Has the SI units m/s?
191
30 sec
Q.
The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.
192
30 sec
Q.
Speed that does not change. Moving at a steady rate over time. The speed of an object that travels the same distance each second.
193
30 sec
Q.
The speed at which an object is moving at a given moment in time.
194
30 sec
Q.
The speed of an object at the beginning of a timed interval, an initial condition.
195
30 sec
Q.
The speed of an object at the end of a timed interval, a final condition.
an estimate of how much a measured or calculated value differs from a true value
204
30 sec
Q.
standard quantities used to specify measurements
205
30 sec
Q.
a system of measurement based on the number 10; accepted system for science
206
30 sec
Q.
Meters (m)
207
30 sec
Q.
Grams (g)
208
30 sec
Q.
Degrees Celcius (degree C)
209
30 sec
Q.
Liters (L)
210
30 sec
Q.
Seconds (s)
211
30 sec
Q.
k; thousand; 10^3
212
30 sec
Q.
d; tenth; 10^-1
213
30 sec
Q.
c; hundreth; 10^-2
214
30 sec
Q.
m; thousandth; 10^-3
215
30 sec
Q.
millionth; 10^-6
216
30 sec
Q.
n; billionth; 10^-9
217
30 sec
Q.
A system of scientific measurement used worldwide and based on metric system standards of measurement
218
30 sec
Q.
a metric system standard of measure for mass
219
30 sec
Q.
base standard measure of volume in the SI system
220
30 sec
Q.
system of measurement based on multiples of ten
221
30 sec
Q.
g/ml ; kg/L ; mg/ml etc. (mass per unit volume)
222
30 sec
Q.
all of the numbers in a measurement which are known plus one which is estimated
223
30 sec
Q.
a method of writing very large or very small numbers using exponents with base 10
224
30 sec
Q.
how close a measured value is to the TRUE or ACCEPTED value of the quantity being measured
225
30 sec
Q.
how close a set of measurements are to each other
226
30 sec
Q.
A measure of the amount of matter in an object
227
30 sec
Q.
Anything that takes up space and has mass
228
30 sec
Q.
The effect of gravity on mass; differs from earth to space to moon, etc.
229
30 sec
Q.
The amount of space an object occupies; l x w x h
230
30 sec
Q.
The size of a 2-dimensional surface; l x w
231
30 sec
Q.
A value obtained when performing an experiment; (it's the value YOU obtain or calculate)
232
30 sec
Q.
The value determined by many measurements made by reliable sources; would most likely be a published value. (Also called the theoretical value)
233
30 sec
Q.
A calculation comparing a value obtained by you to a scientifically accepted, established value
234
30 sec
Q.
A measure of the average kinetic energy (motion) of the particles in a sample of matter
235
30 sec
Q.
the branch of science dealing with the study of matter and changes in matter
236
30 sec
Q.
a series of steps followed by scientific investigators to answer specific questions about the natural world
237
30 sec
Q.
the lowest temperature theoretically possible; all molecular motion ceases
238
30 sec
Q.
a temperature scale devised so there are no negative temperatures; the lowest temperature is absolute zero
239
30 sec
Q.
measurements which involve determining a numerical value
240
30 sec
Q.
a basic unit of length in the metric system; length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second
241
30 sec
Q.
Momentum of an object moving through a circle
242
30 sec
Q.
The study of an objects moving through the air
243
30 sec
Q.
The study of how things move
244
30 sec
Q.
Point where the mass of an object appears to be concentrated
245
30 sec
Q.
Force applied to an object that causes it to move in a circle
246
30 sec
Q.
Rate at which an object's velocity is decreasing
247
30 sec
Q.
In order to use less force you must apply the force over a longer distance
248
30 sec
Q.
Study of why things move the way they do
249
30 sec
Q.
Point of view from which movement is being observed
250
30 sec
Q.
Force applied to move the resistance
251
30 sec
Q.
The ability to perform work
252
30 sec
Q.
Matter cannot be created or destroyed, it can only change forms
253
30 sec
Q.
Energy cannot be created or destroyed, it can only change forms.
254
30 sec
Q.
Substance that reduces friction
255
30 sec
Q.
The study of motion
256
30 sec
Q.
Movement due to mass and velocity in a particular direction
257
30 sec
Q.
Movement between two extremes
258
30 sec
Q.
Movement that repeats at a regular interval
259
30 sec
Q.
Energy that is being stored
260
30 sec
Q.
Rate at which work is done
261
30 sec
Q.
Weight that is moved by the lever
262
30 sec
Q.
The amount of tension a material can withstand
263
30 sec
Q.
The continuous pull on an object
264
30 sec
Q.
Speed and direction that an object is moving
265
30 sec
Q.
Change in position due to an applied force
266
30 sec
Q.
Unpowered, heavier-than air flying device held to the earth by a line
267
30 sec
Q.
Keeps the kite at the proper angle to the wind, string that attaches line to the kite
268
30 sec
Q.
Stick to stick fitting and to stick to fabric such as: glue, tape, string
269
30 sec
Q.
Prevents the kite from flying away, you hold onto this
270
30 sec
Q.
Directs the air to give lift
271
30 sec
Q.
Give your kite structure, can be called either spine, or spreader
272
30 sec
Q.
Adds grad to your kite to keep it pointing in the wind
273
30 sec
Q.
Connecting point from the line and the bridle
274
30 sec
Q.
Lightweight and strong
275
30 sec
Q.
The upwards lift force has to be able to overcome the downward force of gravity
276
30 sec
Q.
Made up of moving particles, (atoms) which move from one direction to another
277
30 sec
Q.
low , due to faster moving air
278
30 sec
Q.
high, due to slower moving air
279
30 sec
Q.
Bernoulli's Principal
280
30 sec
Q.
symmetrical
281
30 sec
Q.
To think about designing, building and testing something
282
30 sec
Q.
Putting the various materials together
283
30 sec
Q.
plastic, paper, nylon
284
30 sec
Q.
Things you use to link materials together
285
30 sec
Q.
They help decide which type of materials you should use
286
30 sec
Q.
Air molecules in motion
287
30 sec
Q.
Increase Stability
288
30 sec
Q.
The difference in air pressure
289
30 sec
Q.
The branch of mechanics concerned with the motion of bodies under the action of forces
290
30 sec
Q.
When two forces are acting on an object are equal in size and do not cause a change in motion
291
30 sec
Q.
When two forces acting on an object are not equal in size
292
30 sec
Q.
Resistence to change in motion
293
30 sec
Q.
Is a condition where in the only force actng upon an object is the gravity
294
30 sec
Q.
Pushes and pulls that result from direct touching of objects
295
30 sec
Q.
a force that is applied to an object by a person or another object
296
30 sec
Q.
A pulling force exerted by a string, cable, chain, or similar solid object on another object
297
30 sec
Q.
The total amount of force acting on an object, from the sum of forces.
298
30 sec
Q.
The weight force pulling down on a mass in Newtons
299
30 sec
Q.
The friction on an object when it's moving.
300
30 sec
Q.
The force that is perpendicular to the surface the object is resting on
301
30 sec
Q.
A number that is proportional to the friction between two objects / surfaces
302
30 sec
Q.
A simple sketch of the forces relative to a given object.
303
30 sec
Q.
A force that does not change the mechanical energy of a system and is independent of the path taken, such as gravity, spring force.
304
30 sec
Q.
The equation for friction force
305
30 sec
Q.
Any center seeking force that causes an object to move in a circle
306
30 sec
Q.
An unbalanced force causes mass to accelerate
307
30 sec
Q.
The acceleration that accelerates an object towards the center as it moves in a circle.
308
30 sec
Q.
Distance around a circle
309
30 sec
Q.
The distance from the center of a circle to edge of circle
310
30 sec
Q.
Forces that want to accelerate an object in a straight line, Tangent to the curve.
311
30 sec
Q.
is the linear speed of something moving along a circular path
312
30 sec
Q.
a movement of an object along the circumference of a circle.
313
30 sec
Q.
Newton's Law that dictates that an object will move at a linear (straight) direction when the centripetal force is absent
314
30 sec
Q.
The relationship between the tangential velocity and the centripetal acceleration.
315
30 sec
Q.
The relationship between centripetal acceleration and the radius
316
30 sec
Q.
Moving in a linear (straight) direction
317
30 sec
Q.
As the distance between two objects increases, the force of gravity _________.
318
30 sec
Q.
As the mass of the objects increases, does the gravitational attraction between them increase or decrease?
319
30 sec
Q.
The closer a planet is to the sun, the ________ it travels.
320
30 sec
Q.
Planets travel around the sun in the shape of a(n) _________.
321
30 sec
Q.
The amount of time it takes for a planet to complete one trip along an orbit is called a(n) ________.
322
30 sec
Q.
The path a planetary body takes around another in space is called a(n) ________.
323
30 sec
Q.
Polish scientist who is the first to be credited with the idea of a sun-centered solar system
324
30 sec
Q.
Italian scientist who wrote a book endorsing the sun-centered view, resulting in his house arrest during Roman Inquisition
325
30 sec
Q.
scientist with earth-centered view who made accurate measurements of planetary movements
326
30 sec
Q.
Brahe's assistant who supported a sun-centered view and developed three laws of planetary motion
327
30 sec
Q.
credited with Universal Gravitation; sun-centered view
328
30 sec
Q.
measured G; sun-centered view
329
30 sec
Q.
Universal Gravitation constant
330
30 sec
Q.
An attractive field force that acts between any two object, affected by the size of the masses and the distance between the masses.
331
30 sec
Q.
F = Gmāmā/rĀ², where F is the gravitational force, mā and mā are the masses and r is the distance between their centers of mass.
332
30 sec
Q.
G = 6.67 x10ā»Ā¹Ā¹ N kgā»Ā² mĀ²
333
30 sec
Q.
The curved path of a celestial object or spacecraft around a star, planet, or moon; ; occurs when a projectile is moving fast enough so it falls at the same rate that the Earth's surface curves away beneath it.
