Phys 165 Module Exam Newest COMPLETE
QUESTIONS AND VERIFIED GRADED A+!!
A ball is tossed vertically upward with a speed of 10.0 m/s. At the peak of its path, the ball has
________.
A) Zero speed
B) Maximum gravitational attraction
C) Maximum acceleration
D) No force acting on it
Accurate Answer: A
Which statement best describes The Scientific Method?
Accurate Answer: A systematic process used to find a solution to a problem.
_________ can be thought of collectively as objects in nature.
Accurate Answer: Matter
A physical quantity that remains constant during an experiment is known as an______.
Accurate Answer: Control
When a decrease in the independent variable causes the dependent variable to increase this is
called an _________.
Accurate Answer: Inverse proportion
,Which of the following best describes a scientific law?
Accurate Answer: A generalized rule used to explain observations of the natural world, this
focuses on smaller details.
Which of the following is a measurement of force?
Accurate Answer: The kilogram
Which of the following is a measurement of temperature?
Accurate Answer: The Kelvin.
Which of the following refers to the closeness of a measurement to the correct value of that
measurement?
Accurate
How many significant figures are in 4,020 kg?
3
How many significant figures are in 0.004301 m?
4
Accurate Answer: 4
Classical physics is an excellent approximation as long as three things are true. Which of the
following statements are NOT one of these three things?
Friction acting on the object must be so small that it can be ignored
Besides factors that are unique to the situation, the factors contributing to uncertainty in a
measurement include:
Limitations of the measuring device. and The skill of the person making the measurement.
,The mass of a block of wood is reported as 458 ± 21 g. What is the percent uncertainty? Show
your work (2 points for correct setup, 2 points for correct calculation, 1 point for correct number
of significant figures)
21/458X100=4.5852=4.6%
The time for a drag race is 14.5 s ± 8.1%. What is the absolute uncertainty? Show your work (2
points for correct setup, 2 points for correct calculation, 1 point for correct number of
significant figures and label)
Accurate Answer: 14.5 s X 8.1% = 1.1745 → 1.2 s
Covert 50 km to meters.
Accurate Answer: 50 km * 1000 m/1 km= 50000 m
Covert 53 mg to grams.
Accurate Answer: 53 mg * 1 g/1000mg= 53/1000= 0.053 g
A person runs a race in 6709 s. How many minutes is this time?
Accurate Answer: 6706 s* 1 minute/60 sec= 6706/60=111.767 minutes= 111.8 minutes
What do you get when you divide 932.0 m by 42.00 s?
Accurate Answer: 932.0 m/42.00 s= 22.1905 m/s= 22.19 m/s.
In an experiment, the factors that affect the time it takes a ball to fall are being tested. During
one set of trials, the height from which the ball is dropped is systematically increased, and the
resulting time it takes the ball to fall is measured. The entire time the same ball is used. Identify
the independent variable, the dependent variable, and the controlled variable.
Independent- height of ball Dependent- time of fall of ball control- mass of ball
In a meaningful paragraph or two, describe the role of experimentation in science. Be sure to
describe how experimental data can affect our knowledge of the universe and how the
reliability of information is affected by the presence or lack of experimental data. 4 points for
, describing the role of experimentation in science, 4 points for discussing reliability of
information and 2 points for grammar - total 10 points
Accurate Answer: Experimentation is extremely important to the field of science and follwing
the scienttific method. When something wants within the world of science wants to be
explained, scientist can produce experiments in an effort to gather data, draw conclusions and
publish laws and theories. The set up and design of these experiments are extremely important
as they must be set up in a way that mimics real world applications and reproducable
conditions. Without these aspects, the data drawn may not be correct of fit what is actually
trying to be studied. If the set up to an experiment were not to be precise or use the correct
materials, data may be skewed (or biased) based on any number of factors. In an effort to have
strong, reproduceable date, these experiments and their setups must be reliable. Down the line,
should an experiment want to be reproduced by the same team or others, the design should be
such that not only can it be reproduced, but also acheive similar results.
Extended Response: You walk into your bedroom and discover your favorite electronic gadget
broken into pieces on the floor. Despite being enraged, you decide to calm down and to use the
6 steps of the scientific method by Karl Pearson to find out what happened to your gadget.
Describe the steps of the scientific method and what specific actions would you take during
each step of the scientific method. Listing the 6 steps correctly is worth 6 points, explaining your
actions during each step is worth 6 points, and using proper grammar is worth 3 points
• identify problem
• gather info
• hypothesis
• expand hypothesis
• test hypothesis
• accept reject or modify
QUESTIONS AND VERIFIED GRADED A+!!
A ball is tossed vertically upward with a speed of 10.0 m/s. At the peak of its path, the ball has
________.
A) Zero speed
B) Maximum gravitational attraction
C) Maximum acceleration
D) No force acting on it
Accurate Answer: A
Which statement best describes The Scientific Method?
Accurate Answer: A systematic process used to find a solution to a problem.
_________ can be thought of collectively as objects in nature.
Accurate Answer: Matter
A physical quantity that remains constant during an experiment is known as an______.
Accurate Answer: Control
When a decrease in the independent variable causes the dependent variable to increase this is
called an _________.
Accurate Answer: Inverse proportion
,Which of the following best describes a scientific law?
Accurate Answer: A generalized rule used to explain observations of the natural world, this
focuses on smaller details.
Which of the following is a measurement of force?
Accurate Answer: The kilogram
Which of the following is a measurement of temperature?
Accurate Answer: The Kelvin.
Which of the following refers to the closeness of a measurement to the correct value of that
measurement?
Accurate
How many significant figures are in 4,020 kg?
3
How many significant figures are in 0.004301 m?
4
Accurate Answer: 4
Classical physics is an excellent approximation as long as three things are true. Which of the
following statements are NOT one of these three things?
Friction acting on the object must be so small that it can be ignored
Besides factors that are unique to the situation, the factors contributing to uncertainty in a
measurement include:
Limitations of the measuring device. and The skill of the person making the measurement.
,The mass of a block of wood is reported as 458 ± 21 g. What is the percent uncertainty? Show
your work (2 points for correct setup, 2 points for correct calculation, 1 point for correct number
of significant figures)
21/458X100=4.5852=4.6%
The time for a drag race is 14.5 s ± 8.1%. What is the absolute uncertainty? Show your work (2
points for correct setup, 2 points for correct calculation, 1 point for correct number of
significant figures and label)
Accurate Answer: 14.5 s X 8.1% = 1.1745 → 1.2 s
Covert 50 km to meters.
Accurate Answer: 50 km * 1000 m/1 km= 50000 m
Covert 53 mg to grams.
Accurate Answer: 53 mg * 1 g/1000mg= 53/1000= 0.053 g
A person runs a race in 6709 s. How many minutes is this time?
Accurate Answer: 6706 s* 1 minute/60 sec= 6706/60=111.767 minutes= 111.8 minutes
What do you get when you divide 932.0 m by 42.00 s?
Accurate Answer: 932.0 m/42.00 s= 22.1905 m/s= 22.19 m/s.
In an experiment, the factors that affect the time it takes a ball to fall are being tested. During
one set of trials, the height from which the ball is dropped is systematically increased, and the
resulting time it takes the ball to fall is measured. The entire time the same ball is used. Identify
the independent variable, the dependent variable, and the controlled variable.
Independent- height of ball Dependent- time of fall of ball control- mass of ball
In a meaningful paragraph or two, describe the role of experimentation in science. Be sure to
describe how experimental data can affect our knowledge of the universe and how the
reliability of information is affected by the presence or lack of experimental data. 4 points for
, describing the role of experimentation in science, 4 points for discussing reliability of
information and 2 points for grammar - total 10 points
Accurate Answer: Experimentation is extremely important to the field of science and follwing
the scienttific method. When something wants within the world of science wants to be
explained, scientist can produce experiments in an effort to gather data, draw conclusions and
publish laws and theories. The set up and design of these experiments are extremely important
as they must be set up in a way that mimics real world applications and reproducable
conditions. Without these aspects, the data drawn may not be correct of fit what is actually
trying to be studied. If the set up to an experiment were not to be precise or use the correct
materials, data may be skewed (or biased) based on any number of factors. In an effort to have
strong, reproduceable date, these experiments and their setups must be reliable. Down the line,
should an experiment want to be reproduced by the same team or others, the design should be
such that not only can it be reproduced, but also acheive similar results.
Extended Response: You walk into your bedroom and discover your favorite electronic gadget
broken into pieces on the floor. Despite being enraged, you decide to calm down and to use the
6 steps of the scientific method by Karl Pearson to find out what happened to your gadget.
Describe the steps of the scientific method and what specific actions would you take during
each step of the scientific method. Listing the 6 steps correctly is worth 6 points, explaining your
actions during each step is worth 6 points, and using proper grammar is worth 3 points
• identify problem
• gather info
• hypothesis
• expand hypothesis
• test hypothesis
• accept reject or modify
