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An investigation was done with an electromagnetic system made from a battery and wire wrapped around a nail. Different sizes of nails were used. The number of paper clips the electromagnet could pick up was measured. What is the IV?
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
A student wants to conduct an experiment to find out how pulse rates changes as the length of time spent exercising increases. The dependent variable will be
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
The variable the scientist is manipulating during and experiment is the _________ variable in an experiment.
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
The temperature of water was measured at different depths of a pond. What is the DV in this experiment?
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
The dependent variable is the variable that is being _____________ in an experiment.
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
In an experiment studying how increasing amounts of acid rain affect pond w a ter, which of the following would be the dependent variable?
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
A well controlled experiment should be __________. Meaning that other scientists should get the same results.
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
Variables that are kept constand during an experimental trial are called ___________ variables.
measured
independent
number of organisms in the pond water
pulse rate
temperature
replicated
size of nail
control
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