Transcript Chapters 1

Chapters 1-4 Review
By April Senger
FOS
What do we call an educated
guess?
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Fact
Law
Theory
Hypothesis
What do we call an educated
guess?
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Fact
Law
Theory
Hypothesis
What are the variables called that
you try to make sure stay constant
throughout an experiment?
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Alphabetic letters
Dependent
Independent
Controlled or constant
What are the variables called that
you try to make sure stay constant
throughout an experiment?
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Alphabetic letters
Dependent
Independent
Controlled or constant
What is a large collection of
information that is well tested and
verified? It is an explanation of an
event.
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Hypothesis
Fact
Theory
Law
What is a large collection of
information that is well tested and
verified? It is an explanation of an
event.
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Hypothesis
Fact
Theory
Law
When writing up a lab report, your
errors should be listed in or after
what part?
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Question
Conclusion
Experiment
Hypothesis
When writing up a lab report, your
errors should be listed in or after
what part?
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Question
Conclusion
Experiment
Hypothesis
What portion of the lab write up is
the following an example of?
The string is cotton and cotton
stretches. The bar is 40 cm tall.
The mass can be changed by 2.73
grams.
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Errors
Observations
Conclusion
Question
What portion of the lab write up is
the following an example of?
The string is cotton and cotton
stretches. The bar is 40 cm tall.
The mass can be changed by 2.73
grams.
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Errors
Observations
Conclusion
Question
What is an orderly method for
gaining, organizing, and applying
new knowledge?
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Theory
Scientific method
Law
Fact
What is an orderly method for
gaining, organizing, and applying
new knowledge?
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Theory
Scientific method
Law
Fact
What is a general hypothesis or
statement that has been tested
repeatedly and not contradicted?
Sometimes it is called a principle.
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Law
Technology
Theory
Fact
What is a general hypothesis or
statement that has been tested
repeatedly and not contradicted?
Sometimes it is called a principle.
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Law
Technology
Theory
Fact
The study of forces and their
motion called?
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Chemistry
Astronomy
Biology
Physics
The study of forces and their
motion called?
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Chemistry
Astronomy
Biology
Physics
What is a measure of space?
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Mass
Weight
Volume
None of these
What is a measure of space?
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Mass
Weight
Volume
None of these
A sheet of paper can be withdrawn
from under a carton of milk without
it falling over. What does this
demonstrate?
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The paper isn’t touching the milk
The milk has inertia
Gravity holds the milk secure
The milk has no acceleration
A sheet of paper can be withdrawn
from under a carton of milk without
it falling over. What does this
demonstrate?
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The paper isn’t touching the milk
The milk has inertia
Gravity holds the milk secure
The milk has no acceleration
A truck is moving at a constant
velocity. Inside the storage
compartment, a rock is dropped
from the midpoint of the ceiling and
strikes the floor below. Where does
the rock it the floor?
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Ahead of the dropping point
Behind the dropping point
Exactly below the dropping point
More info is needed to solve
A truck is moving at a constant
velocity. Inside the storage
compartment, a rock is dropped
from the midpoint of the ceiling and
strikes the floor below. Where does
the rock it the floor?
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Ahead of the dropping point
Behind the dropping point
Exactly below the dropping point
More info is needed to solve
A 10 Newton falling object
encounters 4 Newtons of air
resistance. What is the magnitude
of the net force on the object?
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10
6
4
0
A 10 Newton falling object
encounters 4 Newtons of air
resistance. What is the magnitude
of the net force on the object?
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10
6
4
0
A 10 Newton falling object
encounters 10 Newtons of air
resistance. What is the next force
on the object?
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0
4
6
10
A 10 Newton falling object
encounters 10 Newtons of air
resistance. What is the next force
on the object?
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0
4
6
10
A man weighing 800 N stands at
rest on 2 bathroom scales so that
his weight is distributed evenly over
both scales. What is the reading on
each scale?
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200
400
800
1600
A man weighing 800 N stands at
rest on 2 bathroom scales so that
his weight is distributed evenly over
both scales. What is the reading on
each scale?
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200
400
800
1600
Galileo’s interpretation of motion
differed from Aristole’s because
what did Galileo have that Aristole
didn’t?
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Hypothesis
Speculation
Classification
Experiments
Galileo’s interpretation of motion
differed from Aristole’s because
what did Galileo have that Aristole
didn’t?
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Hypothesis
Speculation
Classification
Experiments
What are 2 measurements
necessary for calculating average
speed?
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Distance and acceleration
Distance and time
Velocity and time
Acceleration and time
What are 2 measurements
necessary for calculating average
speed?
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Distance and acceleration
Distance and time
Velocity and time
Acceleration and time
An object is in free-fall. At one
instant, it is traveling at a speed of
50 m/s. What is its speed exactly 1
second later?
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60 m/s
50 m/s
40 m/s
25 m/s
An object is in free-fall. At one
instant, it is traveling at a speed of
50 m/s. What is its speed exactly 1
second later?
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60 m/s
50 m/s
40 m/s
25 m/s
What is the force that always work
in the opposite direction of motion?
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Friction
Velocity
Mass
Gravity
What is the force that always work
in the opposite direction of motion?
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Friction
Velocity
Mass
Gravity
What is the gain in speed each
second for a freely falling object
approximately?
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0
5 m/s
10 m/s
20 m/s
What is the gain in speed each
second for a freely falling object
approximately?
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0
5 m/s
10 m/s
20 m/s
A car accelerates from rest at 2
m/s/s. What is the speed 3 seconds
after the car starts moving?
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6 m/s
4 m/s
3 m/s
2 m/s
A car accelerates from rest at 2
m/s/s. What is the speed 3 seconds
after the car starts moving?
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6 m/s
4 m/s
3 m/s
2 m/s
Which has a greater mass?
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Marshmallow
Automobile battery
King-sized pillow
They are all the same
Which has a greater mass?
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Marshmallow
Automobile battery
King-sized pillow
They are all the same
What is the force due to gravity that
acts on an object’s mass?
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Volume
A property of equilibrium
Weight
Mass
What is the force due to gravity that
acts on an object’s mass?
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Volume
A property of equilibrium
Weight
Mass
In which case would you have the
largest mass of gold? When your
chunk of gold weighed 1 N on the
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Jupiter
Moon
Earth
Sun
In which case would you have the
largest mass of gold? When your
chunk of gold weighed 1 N on the
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Jupiter
Moon
Earth
Sun
Careful: On the surface of Jupiter,
where the acceleration due to
gravity is about 3 times that of
Earth, what would the MASS be of
a 100 kg rock be?
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900 kg
600 kg
300 kg
100 kg
Careful: On the surface of Jupiter,
where the acceleration due to
gravity is about 3 times that of
Earth, what would the MASS be of
a 100 kg rock be?
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900 kg
600 kg
300 kg
100 kg
A car has a mass of 1000 kg and
accelerates 2 m/s/s. What is the
magnitude of the force exerted on
the car?
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2000 N
1000 N
500 N
1500 N
A car has a mass of 1000 kg and
accelerates 2 m/s/s. What is the
magnitude of the force exerted on
the car?
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2000 N
1000 N
500 N
1500 N
A bag of groceries has a mass of
10 kg and a weight of about
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100 N
10 N
1N
1000 N
A bag of groceries has a mass of
10 kg and a weight of about
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100 N
10 N
1N
1000 N
A Mack truck and Volkswagen
travelling at the same speed collide
head-on. The impact force is
greatest on the
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Mack truck
Volkswagen
Is the same
Depends on weather
A Mack truck and Volkswagen
travelling at the same speed collide
head-on. The impact force is
greatest on the
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Mack truck
Volkswagen
Is the same
Depends on weather
Your friend says that the heavy
weight champion of the world
cannot exert a force of 50 N on a
tissue with his best punch. The
tissue is held in midair, no walls, no
tricks. You…
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Disagree-good punches have this force
Suggest the force is zero
Agree-it can’t be done
Suggest the force is 10 N
Your friend says that the heavy
weight champion of the world
cannot exert a force of 50 N on a
tissue with his best punch. The
tissue is held in midair, no walls, no
tricks. You…
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Disagree-good punches have this force
Suggest the force is zero
Agree-it can’t be done
Suggest the force is 10 N
Which of Newton’s says that for
every action force there is an equal
and opposite reaction force?
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1
2
3
4
Which of Newton’s says that for
every action force there is an equal
and opposite reaction force?
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1
2
3
4
Who developed the natural and
unnatural motion theories?
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Galileo
Hubble
Ptolemy
Aristole
Who developed the natural and
unnatural motion theories?
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Galileo
Hubble
Ptolemy
Aristole
What is the acceleration of an
object when it reaches terminal
velocity?
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10
Infinity
Constant
zero
What is the acceleration of an
object when it reaches terminal
velocity?
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10
Infinity
Constant
zero
To make life more simple, we round
Earth’s gravity to about
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10
15
20
30
To make life more simple, we round
Earth’s gravity to about
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10
15
20
30
What is the change in velocity
divided by the time?
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Delta v
Acceleration
Speed
Force
What is the change in velocity
divided by the time?
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Delta v
Acceleration
Speed
Force
When an object is falling and only
the force of gravity is acting on it,
what do we call it?
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Free fall
Terminal velocity
Acceleration
Friction
When an object is falling and only
the force of gravity is acting on it,
what do we call it?
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Free fall
Terminal velocity
Acceleration
Friction
Facts are
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More important than theories
Meaningless
Able to change
Always correct
Facts are
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More important than theories
Meaningless
Able to change
Always correct
Which of the following is a scientific
statement?
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There are things we will never know
Matter is filled with undetectable particles
The moon is made of green cheese
Parts of the Universe will never be found
Which of the following is a scientific
statement?
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There are things we will never know
Matter is filled with undetectable particles
The moon is made of green cheese
Parts of the Universe will never be found
What part of a lab is the following
describing? Describes how to
conduct the steps so that it can be
reproduced. Includes materials,
tools and processes in a logical
sequential manner
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Conclusion
Question
Observation
Experiment
What part of a lab is the following
describing? Describes how to
conduct the steps so that it can be
reproduced. Includes materials,
tools and processes in a logical
sequential manner
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Conclusion
Question
Observation
Experiment
What part of the lab should you use
to write your hypothesis?
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Data table
Conclusion
Experiment
Question
What part of the lab should you use
to write your hypothesis?
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Data table
Conclusion
Experiment
Question
What portion of a lab write up is
described below? Correctly
constructed with title, labels and
units?
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Question
Observation
Data Table
Hypothesis
What portion of a lab write up is
described below? Correctly
constructed with title, labels and
units?
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Question
Observation
Data Table
Hypothesis
What is a fake science that has no
tests for validity?
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Theory
Law
Fact
Pseudoscience
What is a fake science that has no
tests for validity?
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Theory
Law
Fact
Pseudoscience
What is the study of life called?
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Chemistry
Biology
Physics
Astronomy
What is the study of life called?
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Chemistry
Biology
Physics
Astronomy
What is the study of matter and
how it changes called?
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Chemistry
Biology
Physics
Astronomy
What is the study of matter and
how it changes called?
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Chemistry
Biology
Physics
Astronomy
What is the study of space and the
Universe called?
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Physics
Chemistry
Astronomy
Biology
What is the study of space and the
Universe called?
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Physics
Chemistry
Astronomy
Biology
Which of Newton’s laws is Inertia?
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4
2
1
3
Which of Newton’s laws is Inertia?
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4
2
1
3
Whirl a rock at the end of a string
and it follows a circular path. If the
string breaks, what is the tendency
of the rock?
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Drop straight down
Continue in a circular path
Follow a straight line path
Go towards outer space
Whirl a rock at the end of a string
and it follows a circular path. If the
string breaks, what is the tendency
of the rock?
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Drop straight down
Continue in a circular path
Follow a straight line path
Go towards outer space
A hockey puck is set in motion
across a frozen pond. If the ice
friction and air resistance are
neglected, what is the force
required to keep the puck sliding at
a constant velocity?
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The weight of the object
The mass of the object
Zero Newtons
The force required to stop it
A hockey puck is set in motion
across a frozen pond. If the ice
friction and air resistance are
neglected, what is the force
required to keep the puck sliding at
a constant velocity?
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The weight of the object
The mass of the object
Zero Newtons
The force required to stop it
An object is pulled northward with a
force of 10 N and southward with a
force of 15 N. What is the
magnitude of the net force on the
object?
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15 N
10 N
5N
0N
An object is pulled northward with a
force of 10 N and southward with a
force of 15 N. What is the
magnitude of the net force on the
object?
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15 N
10 N
5N
0N
Which has no change in its state of
motion? An object…
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At rest
In mechanical equilibrium
Moving at a constant velocity
All of these
Which has no change in its state of
motion? An object…
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At rest
In mechanical equilibrium
Moving at a constant velocity
All of these
When a woman stands at rest with
2 feet on a scale, the scale reads
500 N. What will the scale read if
she lifts one foot?
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500 N
Less than 500 N
More than 500 N
Not enough information
When a woman stands at rest with
2 feet on a scale, the scale reads
500 N. What will the scale read if
she lifts one foot?
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500 N
Less than 500 N
More than 500 N
Not enough information
You are loosely hanging from a pair
of gym rings. What is the upward
support force on the rings?
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Add both rings to get your weight
Each ring equals your weight
Each ring is ¾ your weight
Zero
You are loosely hanging from a pair
of gym rings. What is the upward
support force on the rings?
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Add both rings to get your weight
Each ring equals your weight
Each ring is ¾ your weight
Zero
What is the average speed of a
horse that gallops a distance of 10
km in a time of 30 minutes?
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10 km/h
20 km/h
30 km/h
More than 30 km/h
What is the average speed of a
horse that gallops a distance of 10
km in a time of 30 minutes?
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10 km/h
20 km/h
30 km/h
More than 30 km/h
A heavy object and a light object
are dropped at the same time from
rest in a vacuum. When does the
heavier object reach the ground?
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At the same time
Sooner than the lighter object
Later than the lighter object
Depends on their shape
A heavy object and a light object
are dropped at the same time from
rest in a vacuum. When does the
heavier object reach the ground?
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At the same time
Sooner than the lighter object
Later than the lighter object
Depends on their shape
Which of Newton’s laws states that
an object in motion will stay in
motion?
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1
2
3
4
Which of Newton’s laws states that
an object in motion will stay in
motion?
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1
2
3
4
What is the attraction of a person’s
body towards the Earth called?
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Volume
Weight
Speed
Mass
What is the attraction of a person’s
body towards the Earth called?
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Volume
Weight
Speed
Mass
What is the acceleration of a car
that maintains a CONSTANT
VELOCITY of 100 km/h for 10
seconds?
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0
10 km/h/s
10 m/s/s
1000 km/h/s
What is the acceleration of a car
that maintains a CONSTANT
VELOCITY of 100 km/h for 10
seconds?
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0
10 km/h/s
10 m/s/s
1000 km/h/s
An object travels 8 m in the first
second of travel, 8 m in the second,
and 8 m again in the third second.
What is the acceleration in meters
per second?
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5
8
0
10
An object travels 8 m in the first
second of travel, 8 m in the second,
and 8 m again in the third second.
What is the acceleration in meters
per second?
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5
8
0
10
If a car increases its velocity from
zero to 60 km/h in 10 s, what is its
acceleration?
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3 km/h/s
6 km/h/s
10 km/h/s
60 km/h/s
If a car increases its velocity from
zero to 60 km/h in 10 s, what is its
acceleration?
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3 km/h/s
6 km/h/s
10 km/h/s
60 km/h/s
What is a kilogram a measure of?
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Gravity
Mass
Force
Weight
What is a kilogram a measure of?
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Gravity
Mass
Force
Weight
One object has twice as much
mass as another object. What does
it also have twice as much of?
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Inertia
Volume
Gravitational acceleration
velocity
One object has twice as much
mass as another object. What does
it also have twice as much of?
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Inertia
Volume
Gravitational acceleration
velocity
Compared with the mass of an
object on Earth, what would the
MASS of the same object on the
moon be?
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More
Less
The same
More info is needed
Compared with the mass of an
object on Earth, what would the
MASS of the same object on the
moon be?
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More
Less
The same
More info is needed
A girl pulls on a 10 kg wagon with a
constant force of 30 N. What is the
wagon’s acceleration in m/s/s?
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30
10
3.0
0.3
A girl pulls on a 10 kg wagon with a
constant force of 30 N. What is the
wagon’s acceleration in m/s/s?
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30
10
3.0
0.3
If your body is pulling the Earth,
what is the reaction force?
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The moon pulling Earth
The moon pulling you
The Earth pulling you
The Earth pushing you
If your body is pulling the Earth,
what is the reaction force?
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The moon pulling Earth
The moon pulling you
The Earth pulling you
The Earth pushing you
A baseball player bats with a force
of 1000 N. What is the reaction
force exerted by the ball?
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1000 N
Less than 1000 N
More than 1000 N
Zero
A baseball player bats with a force
of 1000 N. What is the reaction
force exerted by the ball?
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1000 N
Less than 1000 N
More than 1000 N
Zero
Arnold Strongman and Suzie Small
each pull hard on opposite ends of
a rope in a tug-a-war. Who exerts
the greatest force on the rope?
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Suzie
Arnold
Both are the same
Depends on the kind of rope
Arnold Strongman and Suzie Small
each pull hard on opposite ends of
a rope in a tug-a-war. Who exerts
the greatest force on the rope?
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Suzie
Arnold
Both are the same
Depends on the kind of rope
Arnold Strongman and Suzie Small
have a tug-a-war on a polished
floor. Arnold wears socks and Suzie
wears gym shoes. Who will most
likely win?
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Arnold
Suzie
Neither, it is a tie
No basis for predicting
Arnold Strongman and Suzie Small
have a tug-a-war on a polished
floor. Arnold wears socks and Suzie
wears gym shoes. Who will most
likely win?
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Arnold
Suzie
Neither, it is a tie
No basis for predicting
Who is the most famous for their
three laws of motion?
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Galileo
Aristotle
Newton
Copernicus
Who is the most famous for their
three laws of motion?
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Galileo
Aristotle
Newton
Copernicus
An elephant and a coin fall from a
tree through the air to the ground
below. Which object is the amount
of air resistance force greater?
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Elephant
Depends on the size of the elephant
Coin
They are the same
An elephant and a coin fall from a
tree through the air to the ground
below. Which object is the amount
of air resistance force greater?
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Elephant
Depends on the size of the elephant
Coin
They are the same
What is the formula for force?
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F=m+a
F=mxa
F=m/a
F=m-a
What is the formula for force?
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F=m+a
F=mxa
F=m/a
F=m-a
To convert kilograms to Newtons,
you should
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Divide the kg by 10
Subtract them
Add them
Multiply the kg by 10
To convert kilograms to Newtons,
you should
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Divide the kg by 10
Subtract them
Add them
Multiply the kg by 10
Force is equal to mass time
acceleration is also known as
Newton’s ___ Law
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2
3
1
4
Force is equal to mass time
acceleration is also known as
Newton’s ___ Law
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•
•
2
3
1
4
You have completed the study…Good Luck!