Which type of study would be best suited as a substitute for a risky controlled experiment?(1 point)
a simulation
systematic observations
the scientific method
a field study
a simulation
The scientific method is sometimes seen as more of a cycle than a linear process. Which statement gives a major reason for this? (1 point)
Analyzing data can sometimes lead to developing conclusions.
Sharing conclusions with others can sometimes lead to new questions.
Conducting an experiment can sometimes lead to collecting data.
Developing a hypothesis can sometimes lead to designing an experiment
Sharing conclusions with others can sometimes lead to new questions.
A student records the time it takes for her pet rabbit to make it through a maze to a carrot. In one test, she has the rabbit try to find the carrot at 8:00 AM after eating its first meal of the day. In the other test, the rabbit tries to find the carrot at 8:00 AM without having eaten its first meal of the day.
In this experiment, which variable is the outcome variable?
whether the rabbit is hungry or not
the time required to finish the maze
the time of day when the rabbit starts the maze
whether or not the rabbit finds the carrots
The outcome variable in this experiment is the time required to finish the maze.
Which statement is the best description of the scientific method? (1 point)
It involves continuing to collect data until you get the results you want.
It is a way of convincing people that certain facts are true..
It involves collecting data and observations to test ideas.
It is a way of explaining natural phenomena.
It involves collecting data and observations to test ideas.
In which situation would a scientific theory be rejected? (1 point)
It has not been published in as many journals as other theories.
It has many people who disagree with it.
It is contradicted by careful scientific investigations.
It is mostly based on logic and explains a small set of observations.
It is contradicted by careful scientific investigations.
How did new evidence found by Marie Tharp and Bruce Heezen add onto continental drift and create the theory of plate tectonics? (1 point)
They proposed that mountain ranges at the edge of continents helped explain how continents used to fit together.
They proposed that continents are pieces of the Earth's crust floating on top of the mantle.
They showed what the oceans’ floors looked like helped explain how continents move over time.
They showed fossils of the same organism on multiple continents helped explain how continents float on the mantle.
They showed what the oceans’ floors looked like helped explain how continents move over time.
Thinking Scientifically Quick Check
4 of 54 of 5 Items
Question
Which word best describes the statement that mass is neither made nor destroyed by chemical reactions or physical changes?(1 point)
theory
experiment
hypothesis
law
law
Thinking Scientifically Quick Check
5 of 55 of 5 Items
Question
Which part of Newton's second law of motion explains why it is easier to push an empty cart than a full one?(1 point)
Responses
An object with greater mass requires less force to move.
A greater force will cause a greater increase in acceleration.
An object with greater mass will react with a greater force.
A greater force is needed to move an object with a greater mass.
A greater force is needed to move an object with a greater mass.
What does the word polis refer to?
(1 point)
Responses
enlightenment philosophy
enlightenment philosophy
Egyptian mapmaker
Egyptian mapmaker
Greek city-state
Greek city-state
Roman lawmaker