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Midterm review physical science
What graphs could we use to find power?
How does a hypothesis become a law?
Midterm review physical science
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1
How does a hypothesis become a law?
It is approved by the president
It is tested thoroughly and highly accepted
A scientists says so
Wikipedia decides so
2
What graphs could we use to find power?
Force v Time
Velocity v Time
Work v Velocity
Work v Time
3
F=ma
Newtons fourth law
Newtons first law
Newtons third law
Newtons second law
4
Why do we use free body diagrams?
To make sure it can perform function and not fail.
Easy to use.
Only way to test functions.
5
what is scientific notation
A short way to wright big numbers
IDK XD M8
a big way to wright short numbers
Ken bone
6
Force = Mass x Acceleration is which one of Newtons Laws?
First Law
Second Law
None of Them
Third Law
7
All of the following are steps in the scientific method EXCEPT
discarding data that doesn't match the hypothesis
forming a hypothesis
developing a model
observing and recording data
8
How many of these free body diagrams depict a body at rest?
Two
Three
None
One
9
How many free body diagrams do we draw for
m
, the mass on the table?
1 - for all the forces
1 - the Normal and Weight cancel so we don't care
1 for centripetal force
2 - one for vertical forces, and one for horizontal
10
A Scientific MODEL
something a scientist does in his spare time
is a workable explanation of what is happening
always gives the right answer
has to be a physically constructed item
11
What is a scientific theory?
An advanced hypothesis
A trusted explanation of some aspect of the natural world
An educated guess
An accepted assumption
12
What is science?
Science is a system of knowledge and the methods you use to find that know
chemistry
environmental
biology
13
Who are Newtons laws made by?
Niel Degrasse Tyson
Albert Einstein
Jimmy Dean
Issac Newton
14
A rocket launch is an example of Newtons Laws?
True
False
15
Do the graphs below represent the same type of motion?
Yes
No
16
what is the formula for converting Celsius to Fahrenheit
both 3 and 4
C x 5/9 + 32
C x 9/5+32
C x 1.8 + 32
17
What is the formula of power?
Power = Work done/ Time ✖️ 100%
Power = Force ✖️ Distance
P=E/T
Power = Work done/ Time
18
Which two free-body diagrams are accelerating?
a & c
a & b
c & d
b & d
19
Which two free-body diagrams are accelerating?
c & d
a & c
b & d
a & b
20
Which of the following graphs show constant, negative acceleration?
Graph 4
Graph 2
Graph 3
Graph 1
21
Which of the graphs represent the velocity after 3 seconds?
E
C
B
A
22
Convert to scientific notation:
35 x 105
35 x 10-5
3.5 x 104
3.5 x 10-4
23
the formula for Potential Energy is
Ep=mgh
askdlasdkj
a=s/t
a+b=d
24
Please select the free body diagram that correctly represents the scenario below.
A
B
C
D
25
This free body diagram represents an object that is...
Accelerating downwards
Not accelerating
Accelerating upwards
Accelerating to the right
26
What was Newton's book on physics called?
Philosophiæ Naturalis Principia Mathematica
Philosophiæ Naturalis Principia Physicsis
Philosophy Natural Principle Mathematics
Philosophy of Natural Principles of Mathematics
27
Who discovered Physics
Galileo
Aristotle
Einstein
Newton
28
Which of newtons laws is this?
1st
all of the above
3rd
2nd
29
The formula for speed is
S=t/d
S=mass x acceleration
S= t/v
S=d/t
30
What is Newtons 1st Law?
If a object is at rest it stays at rest
None of these
For every action there is a equal and opposite reaction
An object will accelerate in the direction of a force
31
What is the formula of energy?
mass✖️specific heat capacity✖️change in temperature
mass✖️specific heat capacity✖️temperature
mass✖️latent heat of fusion
mass✖️specific heat capacity
32
What
is
scientific notation?
Multiplying a rational number by 10 to make it bigger
Simplifying an equation and getting 10 as a coefficient
Making a large number have a value of <10x10#
Making a small number have a value of >10x10#
33
The formula for Efficiency is...
Work input/ Work output x 75%
Work input/Efficiency x 50%
Work output/ Work input x 75%
Work output/ Work input x 100%
34
Who created Scientific Notation
Albert Einstein
Isaac Newton
Mr. Huggins
Archimedes
35
Thinking about graphs...
A
B
D
C
36
The formula for force is
F=mv
F=mg
V=ir
F=ma
37
Which of these v-t graphs show constant velocity?
C
D
B
A
38
Which row of the following table correctly relates the graphs to the materials?
D
B
C
A
39
Why is Scientific Notation Used?
Because it's fun
It was an early math invention
To make calculations with unusually large or small numbers less cumbersome.
Because it's easy
40
The density formula is
Mass/Volume
Weight/Volume
Volume/Mass
Mass/Weight
41
This free body diagram represents an object that is...
Accelerating to the right
Accelerating downwards
Accelerating upwards
Not accelerating
42
This free body diagram represents an object that is...
Accelerating to the right
Accelerating downwards
Accelerating upwards
Not accelerating
43
Which graphs show no relationship between variables?
A and B
C and D
G, H, and I
D, E and F
44
What do Free Body Diagrams Represent?
Density of an object
Weight of an object
Forces on an object
Temperature of an object
45
Is inertia one or part of newtons 3 laws of motion?
Yes it is stated in law number two
Yes that is stated in all of the laws
Yes as stated in his 1st law
Inertia is stated in none of the 3 laws of motion
46
What is a scientific law?
Explanation of some aspect of the natural world
Observations that describes some aspect of the universe
Explanation made on the basis of limited evidence
47
Free body diagrams show only the forces ______________________
the object applies to others
acting on the object
the objects applies to its mass
acting on its surroundings
48
SCIENTIFIC METHOD: 1.) Making Observations 2.) Form A Hypothesis 3.) Test The Hypothesis 4.) Conclusion
False
True
49
The dependant variable is
normally a time frame (Days/Weeks) and goes on the Y axis
The thing we want to find out and goes on the X axis
normally a time frame (Days/Weeks) and goes on the X axis
The thing we want to find out and goes on the Y axis
50
The formula for velocity is....
V=d/t
V= distance/ acceleration
V=t/d
V=Force x mass
51
Who described the theory about gravity?
Albert Einstein
Neil Armstrong
Donald Trump
Isaac Newton
52
If the data does not support your hypothesis the hypothesis can be revised and then retest.
dependent
variable
True
false
53
Convert to scientific notation:
35 x 10-5
35 x 105
3.5 x 104
3.5 x 10-4
54
express in scientific notation
7.35x103
73.5x103
7.35x10-3
735x103
55
What is Newtons 3rd Law?
An object at rest will stay at rest
An object will accelerat in the direction of the force
For every action there is an equal and opposite reaction
None of these
56
What is the formula for kinetic energy?
(m*v)
(m)(g)(h)
F=net
1/2(m*v)
57
What situation does this free body diagram describe?
a book at rest on a table
a book being lifted by a string
a book being pushed across a table
a book on a table pushed down by a hand
58
The formula for work is...
W=F x D
W= Work output/ Work input
W= S x D
W= F x M
59
Which of these graphs represent an object with no motion?
A, B, C, & D
A & B only
None
C & D only
60
which of newtons laws is this?
2nd
3rd
1st
61
What is the displacement formula?
d = 0.2 (a²) (t)
d = 0.2 (a) (t²)
d = 0.5 (a) (t²)
d = 1/5 (a) (t²)
62
What is the Average Velocity formula?
V=🔺v/🔺t
V=t🔺/d
v=d/🔺t
v=c/b
63
What is the scientific notation of 883
8.83x102
0.883x102
883x102
8.73x102
64
What is the scientific method
The scientific method does not exsist
a method of procedure that has characterized natural science
65
Explain the goal of the scientific method, AND list the steps in the scientific method.
The goal of the scientific method is to solve a problem or to better under
Observation
Hypothesis
Data collection
66
F=ma
Belief
Hypothesis
Law
Theory
67
Motion Graphs
2
4
1
3
68
In which of the free body diagrams below is the object in equilibrium?
B
D
C
A
69
True or false? The graphs shown correspond with each other.
True
False
70
The Scientific Revolution influenced exploration because
it scared people from leaving their homes
people became curious of the unknown world around them
the earliest successful planes were invented
of the invention of the steamboat
71
What is the acceleration formula?
a = Δv x Δt
a = Δt x Δv
a = Δt / Δv
a = Δv / Δt
72
What formula is this?
Torque
Pulse
Momentum
Push
73
Do the graphs below represent the same type of motion?
Yes
No
74
Which of these v-t graphs shows an object not moving?
B
C
D
none
75
All of these graphs are consistent with what type of motion?
zero acceleration
objects at rest
uniform acceleration
constant velocity
76
What is the relationship between science and technology?
Science and technology are interdependent.
they are boos
Data collection
Scientist use computers to help the world
77
Which law is this formula?
Newtons 2nd law
Newtons 3rd law
Newtons 1st law
Newtons 2nd law
78
Which free body diagram is drawn correctly?
B
C
A
79
What is the work formula?
w = tan-1(vy/vx)
w = Fd
w = Fapp + Ff
w = P/m
80
Newtons has more than 4 laws
True
False
