Is it better to insulate walls or roof? If you were on a very skinny budget and had to make a choice, you would insulate your ceiling first. Installing ceiling insulation can save around 35% on heating and cooling energy. Compare this to insulating your walls. Insulating your walls saves around 15% on heating and […]
What ethnicity makes up Mexican?
What ethnicity makes up Mexican? But most people in Mexico or of Mexican descent these days are not indigenous but rather mestizo, meaning they have a mixture of indigenous, European, and African ancestry. What American Indian tribes originated from Mexico? Northern Mexican Indian Middle American Indian. Huichol and Cora. Cáhita. Tepehuan. Tarahumara. Yaqui. Diegueño. Seri. […]
Is electricity and magnetism the same?
Is electricity and magnetism the same? 3) Electricity and magnetism are essentially two aspects of the same thing, because a changing electric field creates a magnetic field, and a changing magnetic field creates an electric field. (This is why physicists usually refer to “electromagnetism” or “electromagnetic” forces together, rather than separately.) How can we prevent […]
Which is the strongest heart valve?
Which is the strongest heart valve? The left ventricle is the largest and strongest chamber in your heart. The left ventricle’s chamber walls are only about 1.0 to 1.3cm, but they have enough force to push blood through the aortic valve and into your body. How does the blood get around the body? Two types […]
What were the first 5 elements discovered?
What were the first 5 elements discovered? The elements carbon, sulfur, iron, tin, lead, copper, mercury, silver, and gold are known to humans. Pre-a.d. 1600: The elements arsenic, antimony, bismuth, and zinc are known to humans. German physician Hennig Brand discovers phosphorus. Who discovered which element? In 1863 English chemist John Newlands divided the then […]
Is unexpected color change physical or chemical?
Is unexpected color change physical or chemical? Whatever the reaction, it’s important to recognize that one or more new substances are formed! Burning wood is a common example of a chemical reaction because as the wood reacts with oxygen after it has been ignited, it creates smoke and ashes. Signs of a chemical reaction include: […]
Why are steam burns more serious than burns caused by an equal amount of equally hot water?
Why are steam burns more serious than burns caused by an equal amount of equally hot water? Steam is more likely to cause burn injuries than boiling water because of the latent heat of vaporization. Since water expands to approximately 1,600 times its volume when it turns from liquid to steam, steam often escapes its […]
What happens when the air temperature and the dew point are very far apart?
What is an example of an asthenosphere?
What is an example of an asthenosphere? The asthenosphere, in its capacity as a quasi-liquid, has convection currents that extend throughout its whole surface, under the entire area of the plates. The upper layer of asthenosphere under the South American plate, for example, is moving inexorably westward. What is the asthenosphere made of? The asthenosphere […]