A scientist gathers information on a daily basis regarding the growth of a plant over three weeks, these measurements are called

You suggest that the presence of water could speed up the growth of bread mold. This is a(an)

A hypothesis

Hypotheses May come from

Which of the following is NOT a part of how scientist work?

A controlled experiment allows the scientist to test

Which of the following is a valid (reasonable) hypothesis for why a plant appears to be dying?

In science, a hypothesis is useful only if

The amount of light and temperature are examples of

“The plant in Container A has five leaves” is an example of a ___________ observation.

The variable manipulated by the researcher in an experiment is called the

A researcher conducted an experiment to see if increasing water consumption lessens the visible effects of rosacea, a common skin condition. The dependent variable in this experiment was

Which of the following would NOT be an appropriate synonym for the dependent variable?

If a researcher studies fourth-grade students to determine the effects of rewarding good behavior on subsequent behavior, which of the following is the independent variable?

Which variables are those that a researcher chooses to study in order to assess their possible effects on one or more other variables?

This variable depends upon what is done to it by the independent variable.

These variables are those that are created by the researcher. These are typically found in experimental studies.

A hypothesis can be described as

A researcher is studying the effect of sleep on aggression, thinking that less sleep will lead to more aggression. She has some people sleep 6 hours per night, some people sleep 3 hours per night and some people sleep as much as they want. She then monitors aggressive behavior during basketball games among participants. What is the INDEPENDENT variable?

A researcher is studying the effect of sleep on aggression, thinking that less sleep will lead to more aggression. She has some people sleep 6 hours per night, some people sleep 3 hours per night and some people sleep as much as they want. She then monitors aggressive behavior during basketball games among participants. What is the DEPENDENT variable?

A researcher is studying the effect of sleep on aggression, thinking that less sleep will lead to more aggression. She has some people sleep 6 hours per night, some people sleep 3 hours per night and some people sleep as much as they want. She then monitors aggressive behavior during basketball games among participants. What is the CONSTANT/CONTROL?

A researcher is curious to find out what effect classical music has on people’s level of relaxation (as measured by heart rate). He suspects that listening to classical music will make people feel more calm and relaxed. He lets one group listen to classical music for one hour. He lets another group sit in a quiet room for one hour (i.e they hear no music). After one hour, he monitors the heart rate of each participant to measure their level of relaxation. What is the INDEPENDENT variable?

A researcher is curious to find out what effect classical music has on people’s level of relaxation (as measured by heart rate). He suspects that listening to classical music will make people feel more calm and relaxed. He lets one group listen to classical music for one hour. He lets another group sit in a quiet room for one hour (i.e they hear no music). After one hour, he monitors the heart rate of each participant to measure their level of relaxation. What is the DEPENDENT variable?

A researcher is curious to find out what effect classical music has on people’s level of relaxation (as measured by heart rate). He suspects that listening to classical music will make people feel more calm and relaxed. He lets one group listen to classical music for one hour. He lets another group sit in a quiet room for one hour (i.e they hear no music). After one hour, he monitors the heart rate of each participant to measure their level of relaxation. What is the Control Group?

A researcher is curious to find out what effect classical music has on people’s level of relaxation (as measured by heart rate). He suspects that listening to classical music will make people feel more calm and relaxed. He lets one group listen to classical music for one hour. He lets another group sit in a quiet room for one hour (i.e they hear no music). After one hour, he monitors the heart rate of each participant to measure their level of relaxation. What is the Constant/Control?

A researcher conducts an experiment to assess the effects of alcohol on people's sense of balance. He divides his subjects into three groups: in one group the participants drink one ounce of alcohol, in another they drink two ounces of alcohol and in a third group the participants drink soda. He then watches as each participant tries to walk on a straight line from one corner of the room to the next and notes how many times they stumble outside the line. What is the DEPENDENT variable?

A researcher conducts an experiment to assess the effects of alcohol on people's sense of balance. He divides his subjects into three groups: in one group the participants drink one ounce of alcohol, in another they drink two ounces of alcohol and in a third group the participants drink soda. He then watches as each participant tries to walk on a straight line from one corner of the room to the next and notes how many times they stumble outside the line. What is the INDEPENDENT variable?

A researcher conducts an experiment to assess the effects of alcohol on people's sense of balance. He divides his subjects into three groups: in one group the participants drink one ounce of alcohol, in another they drink two ounces of alcohol and in a third group the participants drink soda. He then watches as each participant tries to walk on a straight line from one corner of the room to the next and notes how many times they stumble outside the line. What is the Control Group?

A researcher conducts an experiment to assess the effects of alcohol on people's sense of balance. He divides his subjects into three groups: in one group the participants drink one ounce of alcohol, in another they drink two ounces of alcohol and in a third group the participants drink soda. He then watches as each participant tries to walk on a straight line from one corner of the room to the next and notes how many times they stumble outside the line. What is the constant/control?