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The observation, identification, description, experimental investigation, and theoretical explanation of phenomena is all part of science. Nothing is immune to the scientific process: from charm quarks that haven't existed naturally since the beginning of time to Pluto, recently demoted from planet to dwarf planet. Questions on knowledge about the material and physical aspects of our world are asked and answered here.

Asked in Science, Units of Measure, Weight and Mass, Atomic Mass

What instrument measures mass?

Traditionally a balance was used to measure mass. Objects of known or accepted mass was balanced against another object of unknown mass. When the balance was level the two pans had the same mass. The term balance or scales is still used even though there is no balance used. The scales were the pans that the objects sat on. Now electronic balances are used that gauge the mass of the objects. While you can measure mass with a spring loaded scale, it is...

Asked in Science, Scientists

What is the scientific attitude and what attitudes and characteristics define a good scientist?

A good scientist should possess the following qualities: 1. A scientist must be curious about the world Example: Galileo Galileo's curiosity about the heavenly bodies made him the first person to use a telescope to study the moon, the sun, the planets and the stars. 2. A scientist is logical and systematic Example: Among the reasons why Gregor Mendel discovered the principles of heredity when others have failed was his logical experimental methods and his careful and accurate record keeping. 3. A scientist is open-minded...

Asked in Science, Earth Sciences

What is the rock cycle song?

SEDIMENTARY rock Has been formed in layers Often found near water sources With fossils from decayers Then there's IGNEOUS rock Here since Earth was born Molten Lava, cooled and hardened That's how it is formed These two types of rocks Can also be transformed With pressure, heat and chemicals METAMORPHIC they'll become (sung to the tune of row row row your boat) (=**=) (<cat lol) ...

Asked in Science, Atomic Mass

What is gold's mass number?

The only stable, and only naturally-occurring isotope of gold has mass number of 197. This is the number of protons and neutrons in each nucleus. Gold's atomic number is 79. This is the number of protons found in each gold atom. This determines its place in the periodic table, and its chemical properties: it is the defining property of gold. A nucleus with a different number of neutrons and the same 79 protons would be a different isotope with a different mass number; a...

Asked in Science

Is the independent variable the thing you change?

Yes The independent variable is also known as the manipulated variable. In an experiment where you need to test different objects, the independent variable would be the different objects. ...

Asked in History of Science, Science, Superstitions

What superstitious beliefs have a scientific basis?

Superstitious belief, by definition, have no scientific basis. Science requires that ideas are tested in a way that is repeatable and falsifiable. Falsifiable means that there must be a way that the test shows that a stated belief is not true, while most superstitions rely on metaphysical entities or powers that are so vague they can not be dis-proven. Here are some examples of superstitions, and where they may have come from. Breaking a mirror is seen as seven years of bad luck from...

Asked in Science, Chemistry, Periodic Table

What is the fourth element of the periodic table of elements?

Beryllium (Be) See the Web Links and the Related Questions for more information. ...

Asked in Science, Urinary System

What are the tubes called that carry urine away from the kidneys to the urinary bladder?

The ureters are what carry urine from the kidneys to the bladder. There is one ureter from each kidney, so two ureters in the body. These are the mucous membrane-lined, muscular ducts that propel urine from the renal pelvis of each kidney to the bladder. They originate in the pelvis of the kidney, exit the hilum, and terminate in the base of the bladder in an area called the trigone. ...


Asked in Science, Earthquakes, Plate Tectonics

What is the process that powers plate tectonics?

Convection, as heat from the mantle is transferred to the lower crust, which can move very slowly in response to the increased upward pressure. The heat makes the rock liquid (magma) in some areas, allowing it to flow upward to the surface, thus creating spongebob squarepants! ...

Asked in Science, Cooking Equipment

Why is the pan handle made of plastic?

The first and last friendus simply are not correct, nor do they answer your question. The second, middle question is much better, but it does not fully answer your question either. If a metal pan with a plastic handle is put in the oven at, let's say, 350 deg., then the temperature of the entire pan, metal and plastic, will eventually reach 350 deg. It is not true that the plastic won't get hot, actually it should heat up faster than...


Asked in Science, Growth Rates, Carbonated Beverages, Coca-Cola

Does Coke stop your growth?

Too much sugar instead of vital nutrients certainly can. Thus, limited amounts are best for the human body, depending upon caloric intake, body mass, and exercise. ...

Asked in Science, Ingredient Substitutions, Baking Soda (sodium bicarbonate)

What is an alternative to bicarbonate soda?

Depends on what reciepe you are using and what the purpose is: I often use yeast but in some recipes depending on the fluffiness of the cake I will sometimes use baking soda. A friend of mine uses "fizzy water" (carbonated water) as an alternative. Yeast is only used in bread related recipes, whereas bicarb can be used n cakes ~ Baking Soda in a recipe is to help with 'spreadability of the cookie or cake. You don't use it in pancakes so...


Asked in Science, Physics, Chemistry, Chemical Bonding

Why does water have a high and specific heat capacity?

First, we need to know a little bit about water. Water is a polar molecule because oxygen bears partial negative charge and hydrogen bears partial positive charge. This results in extensive hydrogen bonding in water molecules between slightly negative oxygens and slightly positive hydrogens. Second, we need to remember that temperature is another way of saying the average kinetic energy of particles - the higher the temperature, the faster they move, in the case of gases and liquids, or vibrate, in the case of...

Asked in Science, Biology, Genetics, Biotechnology

What is the GC content of a human genome?

40% This also lets us know that the AT ratio is 60%


Asked in Science, Biochemistry, Reference Books

Could somebody suggest some good books on biochemistry to read to put on personal statement?

Lehninger's principles of Biochemistry.. Voet and Voet, Biochemistry Elliot and Elliot, Biochemistry and Molecular Biology ...

Asked in Science

What is a glass slab?

it is a substance made of glass having 3 dimensions and is cuboid shaped. It does not deviate the light. This means that the incident and the emergent ray are parallel. The slab only produces lateral (sideways) shift or displacement. ...

Asked in Science, Time

What instrument measures time?

Clocks and chronometers? watch, water watch and if non techincal then sun and shadow The instrument used to measure time is called a clock. Time is measured by clocks. watch, water watch and if non techincal then sun and shadow a clock? clock or watch A clock. PW Einstein recommended a clock. An atomic clock. See the related link for more information. As a class, all such instruments are collectively referred to as "clocks". A chronometer. A clock or a watch. A sundial. An hourglass. STOP-WATCH we cannot measure time...

Asked in Science, Essays

What is a conclusion supposed to be about?

A conclusion is what you get after a series of test in laborotory. Or you just put an end to what you are writing and your opinion Conclusion should always restate the thesis statement of the essay, draw some conclusions on the issue and include a clincher that closes your discussion. ...

Asked in Science, Zoos, Biggest, Strongest, Fastest and Other Extremes

What are the loudest animals in a zoo?

Howler Monkeys are aptly named because they are probably the loudest of the monkey species. ...

Asked in Science, Philosophy and Philosophers

Can you explain Science without philosophy is blind and philosophy without science is empty?

Science without philosophy has no guide (is blind). It researches pointless things rather than what we want to know, like the origin of the universe and how to stop global warming. Philosophy without science has no substance (is empty): As an example, more than 2000 years ago, the Grecian philosopher Democritus came up with the idea of atoms, but it was just an idea without meaning until science developed to support his theory. We are just in a position to understand what...

Asked in Science, Visible Light Spectrum

Does a UV wavelength of 395-410 nm work as an black light?

Yes, a "black light" is an ultraviolet light with wavelength of about 395-410 nm. ...