Final Flashcards

1
Q

the study of nature

A

science

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2
Q

the study of matter and energy

A

physical science

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3
Q

anything that has mass and volume (takes up space)

A

matter

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4
Q

the ability to do work or cause change

A

energy

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5
Q

the amount of matter in an object

A

mass

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6
Q

the transfer of energy in which a force is put on an object and the object moves in the direction of the force

A

work

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7
Q

a set of steps used to solve a problem

A

scientific method

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8
Q

an educated guess made from previous observations and knowledge

A

hypothesis

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9
Q

the amount of space an object takes up

A

volume

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10
Q

any factor that can make a change in the results of an experiment

A

variable

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11
Q

the application of science to help people

A

technology

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12
Q

an explanation of an event based on observations and experiment

A

theory

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13
Q

a statement that tells what happens in an event

A

law

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14
Q

the measure of the average kinetic energy of the atoms in an object

A

temperature

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15
Q

the mass per unit volume of a material

A

density

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16
Q

something created to represent an idea

A

model

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17
Q

a visual display of information used to explain an idea or concept

A

graph

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18
Q

the distance an object travels over a period of time

A

speed

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19
Q

the distance an object travels over time and the object’s direction

A

velocity

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20
Q

the change of velocity of an object over time

A

acceleration

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21
Q

the acceleration of a falling object due to gravity in a vacuum

A

g

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22
Q

s property of an object based on the object’s mass and velocity

A

momentum

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23
Q

any object thrown/shot through the air

A

projectile

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24
Q

a force between any objects dependent on the mass of the objects

A

gravity

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25
a downward force on all objects
gravity
26
any push or pull on an object
force
27
equal forces but opposite in directions (net force will be 0)
balanced force
28
a force that is greater in once direction (net force will be greater than zero)
unbalanced force
29
the sum of all forces acting on an object
net force
30
the force that opposes the motion between 2 surfaces in contact
friction
31
an area without air
vacuum
32
the friction caused by the force of air acting on an object opposing the object's motion
air resistance
33
the highest velocity a falling object will reach due to the forces of gravity and air resistance becoming balanced
terminal velocity
34
the resistance of an object to any change in its motion
intertia
35
What is often talked about with Newton's 1st law of motion
intertia
36
when an object falls without air resistance
free-fall
37
the measurement of gravitational force on an object's mass
weight
38
a force from the center that makes an object move in a curved or circular path
centripetal force
39
a device used to make work easier
machine
40
the rate at which work is done
power
41
a measure of how much work put into a machine is changed into useful work output by the machine
efficiency
42
a theoretical machine in which the amount of work you put into the machine is equal to the amount of work you get out of the machine
ideal machine
43
a machine's ability to make work easier by making Fout greater than Fin
mechanical advantage
44
the energy of an object due to the object's motion
Kinetic energy
45
the energy of an object at rest, or energy stored by an object
potential energy
46
a unit that measures the energy in food
calorie
47
the total energy of an object, including both kinetic(temperature) and potential(mass)
thermal energy
48
the production of energy from the splitting of a uranium nuclei
nuclear fission
49
the production of energy from the collisions between the nuclei of atoms
nuclear fusion
50
energy sources found within the earth formed from the decay of plants and animals millions of years ago
Fossil fuels
51
energy resources that can be produced as quickly as they are used
renewable energy resources
52
resources that are used up quicker than they can be made
non-renewable energy resources
53
devices that convert light energy to electricity
photovoltaic cells
54
where do you see photovoltaic cells
solar calculators
55
What is Newton's 1st Law
an object at rest stays at rest and an object in motion stays in motion unless acted upon by an outside force
56
What is Newton's 2nd Law
the amount of acceleration an object has depends on the force put om an object and the object's mass
57
What is Newton's 3rd Law
for every action force there is an equal but opposite reaction
58
State the law of conservation of energy
the law of conservation of energy states that energy can not be created or destroyed, only converted from one form of energy to another
59
What is the SI unit for length
meter (m)
60
What is the SI unit for mass
Kg
61
What is the SI unit for volume
mL or cm^3
62
What is the SI unit for density
g/mL or g/cm^3
63
What is the SI unit for time
seconds (s)
64
What is the SI unit for temperature
kelvin (K)
65
What is the SI unit for speed
m/s
66
What is the SI unit for acceleration
m/s^2
67
What is the SI unit for force
Newtons (N)
68
What is the SI unit for weight
Newtons (N)
69
What is the SI unit for work
Joules (J)
70
What is the SI unit for energy
Joules (J)
71
What is the SI unit for power
Watt (W)
72
What is the speed formula
s=d/t
73
What is the acceleration formula
a=∆V/t or a=F/m
74
What is the momentum formula
p=mxv
75
What is the force formula
F=mxa
76
What is the weight formula
w=mxg
77
What is the power formula
P=w/t
78
What is the work formula
w=Fxd
79
What is the efficiency formula
Eff=Wout/Win
80
What is the mechanical advantage formula
Ma=Fout/Fin
81
What is the Volume formula
V=lxwxh
82
What is the density formula
D=m/v