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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
What is the dependent variable of what effect does high temperature have on the growth of apples?
if the temperature increased, then the radish germination will increase
Your question is not clear. The only help that I can offer is this: When all else remains the same, and only the variable changes, this is called "ceteris paribus", which is Latin for "all else remains the same", approximately. So in an experiment you might say, "If we change the variable, ceteris paribus, I anticipate this outcome will occur." Hope this helps.
Is a oven electromagnet energy?
Most ovens do involve electromagnetic energy. Microwave ovens are the best example because they work by deliberate creation of radio-type
radiation similar to the radiation from a radar antenna or dish. It is in the VHF (very high frequency) wavelength ( about 50cm). Microwave radiation excites the water molecules in the food in the oven. Ony food which contains water will be heated.
An electric oven has red-hot
elements which heat things in two ways. The air near the hot elements is heated by conduction and the the hot air then moves to the items to be cooked and passes the heat on to them also by conduction. The other way is by electromagnetic radiation, but not by VHF radio-like
waves. The heat radiation from hot elements is electromagnetic, but the wavelength is much shorter. It is just a little longer than visible red light's wavelength which less than one millionth of a millimetre. It is called infra-red
radiation. This heat heats the food in the oven in just the same way as the sun warms your skin when you stand in direct sunlight.
Who made the first fireproof suit?
DuPont made the first fireproof suit in 1960 and it was available on the market in 1967.
Why hot lime soda process you better than cold lime soda process?
because
☻ In Hot Lime Soda process reaction proceeds faster due 2 temp.
☻ It requires no coagulants because sludge is formed rapidly
☻ Viscosity of softened water is lower, so filtration becomes much easier
☻ Its produces water of hardness with 15-30 ppm
How many parent and daughter cells are present for a cell that divides through meiosis?
2 parent cells and 3 daughter cells
What is a good science experiment using toothpaste for seventh grade?
i would use various pastes and record how well the different brands clean the teeth
Why is it important to degas a coke before doing an experiment with it?
it is important to degas soda because the CO2 would interfere with results especially density.
How do you make door bell working model using battery for science project?
Put a battery in a holder then press a button
What is a good title for catapult project?
a good name or title for an essay about catapults could be ''catapult'' LMAOO
What describes the thin flat layering found in most metamorphic rocks?
The thin flat layering found in most metamorphic rocks is called foliation, and it is formed due to the alignment of mineral grains or the presence of alternating layers of different mineral compositions. Foliation is a common feature in rocks that have undergone high pressure and temperature conditions, leading to the development of a layered structure.
How did Rutherfords findings change Thomsons plum pudding model?
Rutherford supposed that the atom had a central positive nucleus surrounded by negative electrons.
Where are you likely to find dark-rich soil in a soil profile?
you are likely to find dark, humus-rich soil in an A-horizon profile because that's where dark soil is found & the composition is the particles of weathered rock materials mixed with humus.
What is an example of a practical application for a science fair project?
water expansion is an example
What is the manipulated variable in the egg in a bottle experiment?
Egg Sucked into Bottle (Heating Variation)
The variable is the temperature of the air inside the bottle, which determines its pressure and volume. When air is heated, it has higher pressure or takes up more volume. When cooled, it becomes more dense and takes up less space. With less volume in the bottle, the only way for the pressure to equalize is by pushing the egg in.
Part 1: We were heating an open system "the flask." Temperature and moles were changing. Pressure and volume are being held constant. As the open system is being heated the particles speed up, have limited space to move and moles leave the flask.
Part 2: We took the flask off the heater, set it on the counter and put the egg on top. Pressure and temperature are changing. Volume and moles are being held constant. When the egg was put on the flask the temperature decreased causing the molecules to slow down. This decreased the inside pressure of the flask causing the atmospheric pressure to suck the egg into the flask because it was trying to balance with the inside pressure.
Egg Sucked into Bottle (Combustion Variation)
There is a finite amount of gas in the bottle, nitrogen and oxygen. When combustion occurs (a burning piece of paper), the oxygen in the air combines to form solid oxides and carbon dioxide, both of which occupy less space than the initial free oxygen. Less oxygen in the bottle means lower pressure, and again the outside pressure can force the egg into the bottle.
Can radiation treatment for breast cancer cause leukaemia?
Yes, unfortunately it is true because the way in which some cancers are treated is with radiotherapy. Radiotherapy is a form of ionising radiation like x-rays, and as a result, when that ionising radiation goes through your body, it does damage cancer cells, and it tends to damage cancer cells more than healthy tissue because cancer cells are more vulnerable to damage because they don't have such good DNA repair mechanisms. But the point is, it can still damage healthy tissue.
And so, in the course of dealing with one tumour, it can increase the risk - it doesn't necessarily give you cancer - but it can increase the risk of developing another type of cancer. Very often, bone can be targeted or bone marrow cells, and therefore, you can get secondary tumours developing later in life as a consequence of having been treated.
But if you take certain chemotherapy drugs, they don't necessarily have that same risk. They're not ionising radiation, so it depends on the kind of treatment that you get.
Where can you buy purple 7 percent tincture of iodine?
I am doing a science project that calls for purple iodine. I have looked everywhere and I can not find it. Pleae help. Where can I purchase purple iodine?
