Scientific Variables: Question Preview (ID: 15581)


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An experiment for a new asthm a med was set up. Group one was given the new drug for asthma, while group 2 was given a sugar pill. The sugar pill serves as the _____.
a) independent variable b) dependent variable c) control d) constant variable
What happens to the dependent variable in a controlled experiment?
a) It changes as the independent variable changes. b) It changes as the responding variable changes. c) It does not change d) It is supported or disproved.
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
a) breathing rate b) pulse rate c) time exercising d) type of exercise
In an experiment studying how increasing amounts of acid rain affect pond w a ter, which of the following would be the dependent variable?
a) organisms in rainwater b) amount of acid in the rain c) mixture of pond and acid d) number of organisms in the pond water
A well controlled experiment should be __________. Meaning that other scientists should get the same results.
a) replicated b) rejected c) rewarded d) reconstructed
The dependent variable is the variable that is being _____________ in an experiment.
a) measured b) changed by the scientist c) controlled d) none of the above
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 theDV?
a) # of paperclips b) type of magnet c) size of nail d) strength of magnet
The temperature of water was measured at different depths of a pond. What is the IV in this experiment?
a) temperature b) depth c) thermometer d) I really like ponds
A student wanted to test what milk kittens like. She sat out skim milk in the same place on the same day for 5 kittens and measured how much they drank. What did she do wrong?
a) She had no independent variable. b) She should have only tested 1 cat at a time. c) She had no dependent variable. d) There was nothing wrong with her experiment.
The higher the temperature of water, the faster an egg will boil. What would be the controlled variable(s) in this experiment?
a) size of pot used to boil water b) size of eggs used c) heat source used to boil water d) all of the above
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?
a) # of paperclips b) type of magnet c) size of nail d) strength of magnet
The temperature of water was measured at different depths of a pond. What is the DV in this experiment?
a) temperature b) depth c) thermometer d) I like water
A good experiment has ____ independent variable(s).
a) 1 b) 2 c) 10 d) None of the above
The variable the scientist is manipulating during and experiment is the _________ variable in an experiment.
a) dependent b) independent c) controlled d) most awesome
Variables that are kept constand during an experimental trial are called ___________ variables.
a) independent b) dependent c) control d) none of the above
Students of different ages were given the same jigsaw puzzle to put together. They were timed to see how long it took to finish the puzzle. What is the IV?
a) time to finish puzzle b) number of students c) different ages of students d) there is no IV in this experiment
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