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Science

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.

203,801 Questions

This is the thinest layer of the earths crust?

The thinnest layer of the Earth's crust is known as the oceanic crust. It is typically around 5-10 kilometers thick and is composed mainly of basaltic rock. The oceanic crust is denser and younger than the continental crust, which is why it is thinner.

What is the function of stand and clamp?

A stand and clamp are typically used in laboratory settings to securely hold various equipment such as glassware, burettes, or test tubes in place during experiments. The stand provides a stable base, while the clamp allows for adjustable positioning and secure attachment of the equipment. This setup helps ensure accuracy and safety in conducting experiments by preventing equipment from tipping over or moving during procedures.

The process of arriving at a specific conclusion based on previously accepted general statements?

The process of reasoning that arrives at a conclusion based on previously accepted general statements is Deductive reasoning. Alternatively, Inductive reasoning is the process of reasoning that arrives at a conclusion via observation (think of hypothesis).

Why would it be necessary to attach a manometer to the hypsometer?

Why would it be necessary to attach a manometer to the hypsometer

Is titanium or obsidian stronger?

They have very different properties, so stronger isn't a good word. Obsidian is harder, but more brittle. Titanium is softer, more flexible and can take more bending and pulling.

Is 35 degrees hot or cold?

The formula to translate Celsius to Fahrenheit is to multiply the temperature in Celsius by 9/5ths or 1.8 and add 32. So in this case it would be roughly 95 degrees which in terms of weather is pretty warm, in terms of body temperature it's rather low, and in terms of liquid it's pretty cool.

Will a person fall out of an upside down airplane seat if not strapped in?

It depends on the aircraft, the speed and the maneuver that the plane is doing. If they are doing loops or rolls, no, centrifugal force will hold them in place. If the plane is 'flying' upside down, a maneuver that is possible in some aircraft, yes, gravity will cause them to fall.

What four criteria are often used when assessing a system?

Efficiency, safety, cost and environmental impact.

List three properties of metals?

Lustrous, (meaning shiny) Maleable, (meaning that it can be pounded into shape), and Conductive (meaning that it can conduct electricity or transfer electrons)

another property is Ductile (meaning that it can be stretched into a wire)

What happens when a base reacts with carbonates?

When a base reacts with carbonates, it forms water, carbon dioxide gas, and a salt. The base reacts with the carbonate ion to release carbon dioxide gas, while the remaining products form water and a salt through a neutralization reaction.

What is the product of ten squared and two cubed?

First square ten, next cube two - finally multiply the products of the two.

What is the relationship between heat and infrared radiation?

The relationship between heat and infrared radiation is that one is generated from the other.

Heat is thermal energy. It is the collective energy of movements of atoms, molecules, and electrons within, and dependent upon, a bounded system of matter. This form of energy is not capable of moving through a vacuum.

Infrared radiation is electromagnetic radiation or light energy, photon emissions from any mass who's temperature is above absolute zero. It is energy that has been converted from thermal energy and, once generated, is independent of matter and capable of moving through a vacuum

What is the weight of 1000L of water?

weight of water1000 liters of pure water at 4 degrees Celsius weighs 1000kg (just under 2,205 pounds US)

The weight would have to be adjusted if the water is not pure because the other elements in the water would change its density.

The density would also change if you change the temperature.

What are three ways an atom can gain stability?

To be chemically stable, the atom must have the same amount of protons and electrons.

An atom can become stable by either 1) losing an electron, 2) gaining an electron, or 3) sharing electrons (this only happens between two molecules)

What are the similarities of a square and a cube?

Oh, what a happy little question! Squares and cubes are like old friends, you see. A square is a flat shape with four equal sides, while a cube is like a square that decided to stand up and become three-dimensional. Both have sides that are equal in length and angles that are right angles, creating a sense of harmony and balance in their shapes. Just imagine them dancing together in perfect symmetry on your canvas!

Why does semiconductors and metalloids deserve their names?

Semiconductors are materials that have electrical conductivity between that of a conductor and an insulator. This property arises from their partially filled valence bands, allowing them to conduct electricity under certain conditions. Metalloids, on the other hand, are elements that exhibit properties of both metals and nonmetals due to their intermediate atomic structures. These unique characteristics justify the names "semiconductor" and "metalloid" as they accurately describe the materials' behavior and properties in the context of electrical conductivity and chemical reactivity.

Why can't sound be heard in a vacuum?

Sound is a compressional wave, and travels from particle to particle, through matter in waves of pressure. When someone speaks, they drive air through their vocal cords, which causes them to vibrate (if there not relaxed). These vibrations generate the compressional waves that are detected by your ears as sound. In a vacuum, such as in empty space, there is no substance for the waves to travel through, so the compressional waves, sound, have no way to reach a listener.

Sound is a compression wave, or a pattern of high density areas (compressions) and low density areas(rarefactions). As the density of one area moves back to normal, it throws its abnormality onto an adjacent area, which is how sound moves. If there were no medium to move through, such as in a vacuum, there would be nothing to compress, and, therefore, no way for sound to exist.

What is a word for something that you think exists but you have never seen it?

The word you may be looking for is "faith." Faith is a believing trust in something which cannot be seen, though you may see the effect of it. For example: no one can see gravity. We know it exists. We study it. We see the evidence of it, but gravity itself cannot be seen.

What materials are kleenex made out of?

Kleenex tissues are typically made out of softwood and hardwood fibers, such as from trees like spruce, fir, pine, and eucalyptus. These fibers are processed and mixed with water to create a pulp that is then formed into tissue sheets. Some tissues may also contain additional materials such as water, chemicals for softness, and bleach for brightness.

Who Is The Most Famous Chemist And Why?

There's actually no single, most famous chemist; it's an opinion. People can give many different reasons for why they believe someone is the most famous chemist as well. It's sort of like asking 'Who's the greatest actor in history?'.

How many kg equal cm3?

You misunderstand.

;kg; ( kilograms) is the metric measure of MASS/WEIGHT

'cm^(3)' ( centimetres cubed) is the metric measure of VOLUME.

Without knowing the substance or its density, it is impossible to compare.

What types of simple machine is a lemon squeezer?

A lemon squeezer is a type of lever simple machine. The handles act as the input arm, while the center press acts as the output arm, increasing the force applied to the lemon, making it easier to squeeze the juice out.

What is the name of the force that gives us grip?

Grip is a combination of pressure and friction. The more pressure one exerts upon an object the greater the friction and then the better grip one would have on the object in hand. Same goes for anything that can grip like tires, shoes, etc. Another thing that affects grip is the pattern of the surface applying the pressure, different patterns will exert the force differently.