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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
Which environmental condition in your experiment served as the control?
the plants were the control group
How does electricity reduce the use of fossil fuels?
Electricity does not inherently reduce the use of fossil fuels -- in fact, the production of electric energy is one of the biggest uses of fossil fuels.
There are two ways that electric power can reduce the use of fossil fuels:
Efficiency improvements, and alternate power sources.
Efficiency improvements:
* By replacing thousands of relatively inefficient fossil-fuel-burning engines with thousands of electric motors and a couple of highly efficient centralized fossil-fuel-burning electric power plants, the same amount of mechanical work requires less fossil fuel.
* By using a microwave oven to cook food rather than a gas or electric conventional oven, only enough energy is used to heat the food itself, rather than heating up the internal structure of the oven and the air it contains, and maintaining that temperature for a longer time.
Alternate power sources:
Power can be produced in several ways that require no fossil fuels -- see the "What can you use instead of fossil fuels?" question below.
Converting those forms of energy to electric power makes it easier to reduce or -- in principle -- eliminate the fossil fuel that otherwise would have been used to produce that electric power.
Do you eat the rubber egg after the experiment?
No don't eat the egg unless you like heaps and heaps of vinegar
How many times should experiments be repeated?
once. as Einstien once said; "insanity is doing something over and over again and expecting different results".
What is data in a science fair?
data is where you have facts and knowledge of your prodject. Like if you knew that pluto is cold then that is a fact.
How do you identify a variable in an experiment?
In an experiment, usually one item will cause something else to vary in an observable manner and sometimes predictable way.
A variable will be recognized as any factor, trait, or condition of the experiment that exists in varying amounts or types. There are independent variables, dependent variables, and controlled variables.
An independent variable is one that is changed in an experiment. In order to perform a fair and subjective test one should consider only one independent variable during their experiment. As changes are made in the quantities of our independent variable, changes should be apparent that make observations different from other quantities of the independent variable.
The focus of these observations is on the depenedent variable to see how it responds to the change made to the independent variable quantities. The new value of the dependent variable is caused by and depends on the value of the independent variable and is what we know as cause and effect.
Not to be forgotten, we have the controlled variable which is a quantity that is maintained at a constant in the experiment so as to eliminate any confusion with cause and effect observations.
What do you do if your experiments prediction was wrong?
The same thing you do when a bomb is dropped over you. Duck and Cover.
Can you gold plate ancient bronze coins and how clean must the coins be?
Gold plating essentially destroys the coin. While it might be technically possible, it would be destroying the details of your coin, especially if unprofessionally done. Cleaning coins also destroys the coin too.
When is angle of incidence equal to angle of reflection?
The angle of incidence is ALWAYS equal to the angle of reflection! This is one of the laws of reflection.
What does purpose mean in science fair project?
pupose means like you predict what is going to happen what do you think is happening
Why should expieriments have a control group?
The control group in an experiment is the group that nothing is done to. The reason why there is a control group in experiments is to compare it with the group that has been tested.
What are the science project steps that you put on the poster board?
On a typical science fair posterboard, you should have the following headings:
Introduction- introduce your topic, how this topic affects the world, etc.
Problem - the aim of the experiment
Hypothesis - educated guess on the outcome
Materials - materials used in the experiment
Procedure - list each step in your experiment in chronological order
(Pictures) - you really don't have to have a heading for this
Graphs - you should probably head this one
Results - results of the experiment
Conclusion - your conclusions. include applications of your results here.
Also, it would be a good idea to have a small note on the corner of your board stating that all pictures were taken by the experimenter.
How many people are needed for an science experiment?
Depending on the size of your experiment, you can do it your self. If the project is small, like testing the strength of an egg, you can do it yourself, but if it's a survey or a bigger project that could take you a long time, you might want to bring on an extra person or two.......or three.
What is a good science fair experiment for 7th grade?
You could plant some seeds (peas, beans) in a beaker, but so that they can be seen through the beaker wall. Plant some each different way up. Use the results to show whether gravity affects the way plants grow.
[You might wish to shield the seeds from the daylight for most of the time, exposing them to direct light only when showing them.]
How is a control group treated?
Under normal conditions- without the thing you are testing for so that you can compare.
What do scientists make to help them make an hypothesis or collect data durinf an experiment?
the method of a science project of earthquakes
Who ran the Stanford Prison Experiment?
The Stanford Prison Experiment was conducted by psychologist Philip Zimbardo in 1971 at Stanford University.
The prisoners in the Zimbardo experiment may have used fundamental attribution error by attributing their negative behaviors or emotions to external factors, such as the oppressive prison environment or the actions of the guards, rather than taking personal responsibility for their actions. This could have led them to believe that their behavior was a result of the situation they were in, rather than reflecting their own internal traits.
What is a disadvantage of an in vitro experiment?
One disadvantage of an in vitro experiment is that it may not fully represent the complexity of biological systems in a living organism. It may not account for the interactions between different tissues, organs, or cells that occur in vivo.
