Independent variable is the type of potato. (Possible values are Russet also known as Idaho Potato, Red Bliss Potato, Desiree, Makoikoi, Urenika, …) Dependent variable is the electrical power. (Measured as voltage, in a closed circuit, while you have a low current lamp in the circuit.)
What is the dependent variable of battery?
Voltage
Independent Variable: Time (how long each battery operates in a given device) Dependent Variable: Voltage.
What is the hypothesis of the potato battery?
My hypothesis is that: If the electrolyte source is changed (potato, apple, lime, lemon), then the production of energy (measured in volts) using a lemon will produce the highest voltage because the acid content in the fruit or vegetable will produce electricity when in contact with the electrodes (both zinc and copper
What are the variables in a lemon battery experiment?
lemons), then your independent variable would be the type of fruit. The dependent variable is what changes in response to variations in the independent variable. In fruit battery experiments, the dependent variable is usually a voltage.
What is an independent variable in the experiment?
Independent variables (IV): These are the factors or conditions that you manipulate in an experiment. Your hypothesis is that this variable causes a direct effect on the dependent variable. Dependent variables (DV): These are the factor that you observe or measure.
What is the dependent variable in this experiment?
The dependent variable is the variable that is being measured or tested in an experiment. 1 For example, in a study looking at how tutoring impacts test scores, the dependent variable would be the participants’ test scores, since that is what is being measured.
What is the conclusion for potato battery experiment?
Without circuits, we would not have a lot of things we have today. Finally, we learned how even vegetables such as a potato can become a battery thanks to a process called chemical reaction. When the zinc and copper were mixed together in the potato, it was the perfect place for a current to flow.
How does the potato lightbulb experiment work?
The potato acts as an electrolyte which means it enables the electrons to flow through it. When the nail and pennies are connected to a potato in a circuit, the chemical energy is converted to electrical energy which gives enough power to turn on a small light.
How does a potato produce energy?
The acid inside the potato forms a chemical reaction with the zinc and copper, and when the electrons flow from one material to another, energy is released.
What is the independent dependent and controlled variable in science?
Identify the variables
Independent variable – the variable that is altered during a scientific experiment. Dependent variable – the variable being tested or measured during a scientific experiment. Controlled variable – a variable that is kept the same during a scientific experiment.
What is the independent variable in a series circuit?
Independent variable: length of the wire. Dependent variable: resistance. Control variables: type of metal, diameter of the wire. Conclusion: As the length of the wire increases, the resistance of the wire also increases.
What are variables for science?
A variable is any factor, trait, or condition that can exist in differing amounts or types. An experiment usually has three kinds of variables: independent, dependent, and controlled. The independent variable is the one that is changed by the scientist.
What is the voltage of a potato battery?
A potato battery is not a long-term energy source. The potato creates approximately 1.5 volts and a very weak current. It will not power full-sized light bulbs.
Can a potato battery charge a phone?
You can make a surprisingly strong battery by using a quarter of your sliced potato, sandwich it between a copper cathode and a zinc anode, and connect with a wire. This design allows you to easily replace the potato with a new slice when it no longer powers the battery.
What is the independent variable in?
The independent variable (IV) is the characteristic of a psychology experiment that is manipulated or changed by researchers, not by other variables in the experiment. For example, in an experiment looking at the effects of studying on test scores, studying would be the independent variable.
What is independent variable and dependent variable examples?
Independent variable causes an effect on the dependent variable. Example: How long you sleep (independent variable) affects your test score (dependent variable). This makes sense, but: Example: Your test score affects how long you sleep.
Which of the following is the independent variable?
The independent variable is the variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable.
Is the experimental variable The independent variable?
an independent variable that is manipulated by the researcher to determine its relationship to or influence upon some outcome or dependent variable.
Is time an independent variable?
Time is a common independent variable, as it will not be affeced by any dependent environemental inputs. Time can be treated as a controllable constant against which changes in a system can be measured.
What is a dependent variable for dummies?
The dependent variable is the possible outcome of the experiment; the effect. It depends on what happens to other variables in the experiment. The dependent variable is basically the part that you are changing. For example, if you want to know how much light a plant needs to grow, the amount of growth is the dependent.
Why does potato turn green on passing current?
This process release electrons in potato and increase the negative particles. When these negative species reach the other end of copper it reacts with part of copper wire inside potato and make a complex of copper which is green in color. This is the reason of greenish spots in potato on passing current through it.
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