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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
What two factors stayed the same when Proteus was tested?
When Proteus was paddled across the river the testers needed to learn if the boat settings affected the efficiency at all. To make sure any change was comparable the test conditions need to be the same in all runs. Aka the WEATHER and the DISTANCE had to stay the same.
Neem (Azadirachta indica) is widely recommended for use in agriculture as an alternative to synthetic insecticides. It leads the list of plants with the highest potential to control pests largely because it contains a variety of biologically active compounds. These compounds together called limonoids, are present in various parts of the plant including the leaf, bark and seeds. However the seeds contain the highest quantities.
Neem has two closely related species: A. indica A. Juss and M. azedarac, the former is popularly known as Indian neem (margosa tree) or Indian lilac, and the other as the Persian lilac. Neem has been extensively used in ayurveda, unani and homoeopathic medicine.The Sanskrit name of neem tree is Arishtha meaning 'reliever of sickness' and hence is considered as Sarbaroganibarini. The tree is still regarded as 'village dispensary' in India. Various parts of the neem tree have been used as traditional Ayurvedic medicine in India. Neem oil and the bark and leaf extracts have been therapeutically used as folk medicine to control leprosy, intestinal helminthiasis, respiratory disorders, constipation and also as a general health promoter. Its use for the treatment of rheumatism, chronic syphilitic sores and indolent ulcer has also been evident. Neem oil finds use to control various skin infections. Bark, leaf, root, flower and fruit together cure blood morbidity, biliary afflictions, itching, skin ulcers, burning sensations and pthysis. Neem oil is used on humans, on animals, and on plants, for a huge range of different problems and diseases.
Will car battery acid etch glass?
No battery acid is too thin and will not stay in place plus there's not enough sulfuric acid in the liquid to do the etching.
Hypothesis: Video games provide a useful form of mental exercise.
Hypothesis: Teens who play video games have increased critical thinking skills.
What is a catchy title for a science project about aerodynamics of a car?
Aerodynamics in the Fast Lane
Can a glass jar break if dropped from height in a swimming pool?
It depends on how high you dropped the glass jar into the swimming pool. If you drop the glass jar from a few feet above the swimming pool, it will not break. If you drop it from several stories above the swimming pool, the immense pressure on the glass jar that the water is exerting will cause the jar to break.
13.9 km hr
If a question is an ethical one about which decision is right or wrong, or what a person should do, scientists can contribute to the discussion, but it is not ultimately a scientific question. So a question about the study that a scientist would not be able to answer is, "Which one should be used more often" or something like that. -Apex
What is the difference between glass and plastic?
Glass is made of sand, when sand is heated it will melt to glass. Plastic can be made of oil or synthetic materials.
Different things. For example, the Titanic sank because it hit an iceberg. Other ships sink because the weight on it is too heavy. It also depends on how sturdy the ship or boat is. If it is a handmade small boat, jump on it- and it will sink. if it is medium or big, someting like a rock or an iceberg can sink it.
Can a 50 mW laser pop a balloon or light a firework on fire?
i rekon if like a elephant fell from the sky at 100 mph it could crack the ground enough to create a diversion so then i can sneak around and take the gurd tower out then you run to the gate and let our allies in !
Why do you paint the outer side of the container of a solar cooker with black paint?
The scientific answer is:
There are only three ways for heat to move from one place to another:
conduction, convection, radiation.
Conduction is molecules crashing into each other. If one side of a material
is hotter than the other, heat can be conductedthrough.
Convection is molecules carrying energy through a liquid or gas. Hot air
rising is an example of convection.
Radiation is light waves passing from one material to another. Incandescent
light bulbs emit radiation because the wire within is heated.
Color has no effect on conduction or convection. It does, however, affect
radiation. Material looks dark if it absorbs most of the light that hits
it. A material that cannot absorb radiation will reflect it to your eyes,
making the material look like the color of the light. If a surface absorbs
most of the light hitting it, the surface heats up quickly.
What is a standardizing variable?
a standardizing variable is a variable that has a mean of zero and a standard deviation of one .
What is the minimum height the scientist expect the ocean will rise within the next 100 years?
i think 7 inches
The independent variable is the factor adjusted by the experimenter?
It can be but not always. The experimenter may just have to take the independent variable as it happens.
How could you use a bar magnet to find your way out the forest?
I would think the usual reason of getting lost is not following a straight path (going in circles). Human tends to favorite one side (because of inner ear imbalance), so the walking path is curved, and eventually you are back to the starting point. A compass will have set a more-or-less straight course. How to construct a compass with a bar magnet? I can think of two ways. You can tie the magnet to a string and let it settle with the magnet at the bottom of the string. The alternative is to find a puddle every so often, drop the bar magnet in the water, and let it show the way (if the magnet floats; it will be better if you can find a container to put water in and bring it with you).
What happens when you change the variables?
If you change the variables in a science experiment, you will probably get different results.
What is an independant varible?
An independent variable is one which does not rely on another variable for its value.
For example, in the slope intercept form:
y = 2x + 3
The x is the independent variable and the y is the dependent variable. The x can be set to anything, therefore it is independent. The value of y is dependent on x for its value.
The difference between independent and dependent variable?
i think depednant variable is what youre gonna keep the same and independent variable is what youre changing , hope that helped!.....
Is temperature usually the independent variable?
No. It depends on the context. If you are studying solar gain in a building then the room temperature is a dependent variable. If you are studying the effects of diseases, the body temp is a dependent variable.
What is the independent variable in Pasteur's experiment?
The answer was that the independent variable was the broth that wasn't heated
Can independent variables be changed?
Yes. In fact, in multiple regression, that is often part of the analysis. You can add or remove independent variables to the model so as to get the best fit between what values are observed for the dependent variable and what the model predicts for the given set of independent variables.
Can the equation of kinetic energy of a gas be applied to a flame?
Yes, because kinetic energy is apart of the laws of physics, and can be applied anything that is in motion. Each molecule in the combustion process (that are in motion) are bound the laws of physics just as anything else in this world is. Therefore a flame must have kinetic energy, but in minuscule amounts.
