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To learn about scientific experimentation, Mrs. Newberry asks each student to perform an experiment. Which student’s activity is an experiment?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
Scientific investigations involve many steps and processes. Which characteristics define a laboratory experiment?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
Mr. Chan wants his students to understand the purpose of scientific inquiry: to acquire scientific knowledge. Which of the following strategies is NOT useful for a scientist?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
Scientists conduct many types of scientific investigations. Their efforts often include fieldwork, surveys, models, and experiments. Which statement about scientific investigations is true?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
Jim wants to test how thick the insulation should be in sleeping bags for people to sleep outdoors in cool temperatures. What would the tested variable be in Jim's experiment?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
Cathy designs an experiment to investigate how well cups made of different materials maintain the temperature of a cold drink. Which step will increase the accuracy and validity of Cathy’s results?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
Mia wants to determine how the temperature of water affects how fast bacteria will grow. She places 2 types of bacteria in a warm and cold bowl. What is the outcome variable in Mia's experiment?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
Michael wants to do an experiment involving the moon. Which of the following would be classified as an experiment?
amount of bacteria at the end of the experiment
They include multiple trials to increase the consistency of the data that are collected.
tested and outcome variables, data, and controlled conditions
assumption
Bill puts sugar in hot and cold water and monitors the rate of dissolution.
thickness of insulation material
He will determine whether children’s test scores improve during a full moon.
Conduct multiple trials and have another scientist repeat the experiment
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