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A statement as to why an event occurred that is the basis of an experiment is
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
What two things MUST be present in an experiment for the experiment to be valid?
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
Data is another essential part of an experiment. Which of the following is an acceptable form of data communication?
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
A class is learning about acceleration due to gravity. Their plan is to climb a ladder and drop different kinds of balls from the same height at the same time. They will repeat this for ten trials and recording data. What is the independent variable?
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
Experiments should always be
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
A group of students wanted to investigate a method to clean the polluted water in a nearby swamp. In their investigation, they tested various environmentally safe cleaning agents. They wanted to compare the different agents. What is the control?
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
Rebecca conducted a study on the effects of sleep deprivation for twelfth-graders during midterm exams. She followed two groups of five students each. After two grading periods, she turned in the data she collected. Which steps were left out?
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
A qualitative observation would be
a hypothesis
Little Ann's eyes are brown.
the size and type of the balls
polluted water
Control and variable
All are correct
All are acceptable
research and analysis
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