C165 OA Review Questions with Verified
Correct Answers
What type of model is used by a person who creates a diagram to show how water
moves through the water cycle?
Conceptual model
A person set up a booth on a busy street to sell a small product. As part of an
experiment, the person changed the price of the product several times throughout the
day and recorded the number of customers for each price and the total number of
products sold. The person repeated this process on a similar day, having the booth set
up in the same location and open during the same hours.
What is a dependent variable in this experiment?
The total number of customers
A student wants to know whether certain types and colors of siding absorb more heat
from the sun. The student builds several models of the same size using different siding
materials and different colors. Each model is positioned to have the same angle with the
sun. The student then records the temperature of each model at various points
throughout the day.
What is an independent variable in this experiment?
The siding color
A chemist conducted an experiment in which they observed a chemical reaction under
various temperatures. The chemist used the same substances in the same amounts for
each reaction and only varied the heat applied for each reaction. The chemist recorded
the duration and primary color of each reaction.
, What is a dependent variable in this experiment?
The primary reaction color
What is an example of a question that can be answered using an observational study?
Do elephants maintain consistent social roles within herds?
Which graph shows a trend line that is directly proportional?
A graph where the line passes through the origin and has a constant slope.
A vehicle comes to a stop at a traffic light.
How are speed and velocity affected?
Both velocity and speed change
An airplane makes a turn without slowing down.
What is the change, if any, to the speed and velocity?
Velocity changes, but speed does not
An object is traveling at a velocity of 15 feet per second to the right. The object
accelerates at 5 feet per second per second to the right for two seconds. What is the
result?
The object is traveling to the right with a greater speed.
A gravitational force exists between two objects.Which change results in a decrease in
the gravitational force?
The mass of one of the objects is cut in half.
The net force acting on a shopping cart doubles. What happens to the acceleration?
The acceleration increases.
Correct Answers
What type of model is used by a person who creates a diagram to show how water
moves through the water cycle?
Conceptual model
A person set up a booth on a busy street to sell a small product. As part of an
experiment, the person changed the price of the product several times throughout the
day and recorded the number of customers for each price and the total number of
products sold. The person repeated this process on a similar day, having the booth set
up in the same location and open during the same hours.
What is a dependent variable in this experiment?
The total number of customers
A student wants to know whether certain types and colors of siding absorb more heat
from the sun. The student builds several models of the same size using different siding
materials and different colors. Each model is positioned to have the same angle with the
sun. The student then records the temperature of each model at various points
throughout the day.
What is an independent variable in this experiment?
The siding color
A chemist conducted an experiment in which they observed a chemical reaction under
various temperatures. The chemist used the same substances in the same amounts for
each reaction and only varied the heat applied for each reaction. The chemist recorded
the duration and primary color of each reaction.
, What is a dependent variable in this experiment?
The primary reaction color
What is an example of a question that can be answered using an observational study?
Do elephants maintain consistent social roles within herds?
Which graph shows a trend line that is directly proportional?
A graph where the line passes through the origin and has a constant slope.
A vehicle comes to a stop at a traffic light.
How are speed and velocity affected?
Both velocity and speed change
An airplane makes a turn without slowing down.
What is the change, if any, to the speed and velocity?
Velocity changes, but speed does not
An object is traveling at a velocity of 15 feet per second to the right. The object
accelerates at 5 feet per second per second to the right for two seconds. What is the
result?
The object is traveling to the right with a greater speed.
A gravitational force exists between two objects.Which change results in a decrease in
the gravitational force?
The mass of one of the objects is cut in half.
The net force acting on a shopping cart doubles. What happens to the acceleration?
The acceleration increases.
