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What are some properties of radio waves?

Radio waves are used commonly for communication purposes. Short-radio waves can have wavelengths between 4 inches and 33 feet while the wavelengths of long-radio waves are greater than 33 feet. AM radio is an example of long-radio waves, and short-radio waves are used for televisions. Radio waves have other applications, such as for military and civilian aircraft communication.

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How do you recycle batteries for free?

For retailers, places such as Batteries Plus, Black & Decker, Best Buy, The Home Depot, Radio Shack, Sears, Staples and Target are all ideal starting points. Along with them are other options such as Verizon Wireless, Wal-Mart and Remington Product Company.\nIf neither online resources nor actual retailers are able to help, there is a hotline to help consumers find the nearest retail collection site for recycling; the number is 800-8-BATTERY, as of 2015.\nIf there are still questions about what should be done with old batteries, a phone call to the local or county health department can reconc..

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How do mammals maintain homeostasis?

The muscular system is a major element of homeostasis in mammals. Along with the skeletal system, it maintains posture and body structure and protects the internal organs. It is also the main generator of heat for temperature homeostasis. In addition to its structural and support roles, the skeletal system acts as a reservoir of calcium, which the body releases in response to parathyroid hormone. The skeletal system is also the major site of blood cell production, keeping the properties of blood in a constant state. The skin is the outermost protective layer, which excludes unwanted objects an..

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What is an example of an organism?

When many people think of organisms, they think of bacteria and fungi, which are microorganisms, or very small organisms. Other defining characteristics of being an organism include some level of response to stimuli, reproduction, growth and development, and self-regulation, which is also known as homeostasis. Unicellular organisms consist of only a single cell, while multicellular organisms can contain trillions of cells like most animals do. In complex multicellular organisms, cells are grouped into tissues and organs that each carry out certain functions.

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What does the cerebellum do?

The cerebellum gets information from the muscles, joints, skin and the organs involved in balance and the eyes and ears. It controls the position and the movement of the body through what's seen and heard. It works automatically, without the person having to consciously guide it. A person whose cerebellum is damaged, for example, would have difficulty controlling the movements of his or her arms, legs and hands. The cerebellum also stores memories of different types of movement.\nThe cerebellum is a mass of folia found just beneath the hemispheres of the brain. It also has two hemispheres..

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What is another name for the electron cloud theory?

Erwin Schrodinger developed this model and used mathematics to claim that it is impossible to know for certain where an electron is at any given time. Electron movement around the nucleus takes on the appearance of a cloud, and wherever the cloud is densest is where there is the highest probability of finding an electron. Where the cloud is least dense is where the lowest probability lies. This theory usurps the previous notion that electrons have defined orbits and replaces it with the concept that they have different energy levels that help to approximate each electron's position in the..

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How can you help prevent global warming?

To reduce personal energy usage, choose renewable energy sources to power your home. If possible, choose a certified e-green energy supplier that generates at least half of its power from wind or solar sources.\nIf an e-green supplier is not available, consider how to use less power in the home by switching to energy-efficient light bulbs or raising the thermostat in the summer and lowering it in the winter. Compact fluorescent light bulbs last 10 times longer than incandescent bulbs and keep half a ton of carbon dioxide out of the air.\nChoose an energy-efficient vehicle, such as a hybrid or ..

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What is the specific gravity of aluminum?

Specific gravity is calculated by dividing the density of a substance, in this case aluminum, to the density of a reference substance. Pure water at 39.2 degrees Fahrenheit, which is the temperature at which water is the most dense, is often used as the reference.\nSpecific gravity is often used in industrial settings to determine the composition of unknown substances. However, temperature and air pressure affect the specific gravity of any substance, as do any impurities contained within them.

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Do males and females have the same number of ribs?

WebMD reports the top seven ribs, called true ribs, are attached to the sternum in the middle of the chest, while the bottom ribs, called false ribs, are not directly connected to the sternum. The ribs provide vital protection to the heart and the lungs from impacts, and they are designed to expand and contract, making breathing easier.

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What are some threats to biodiversity?

The construction of new roads destroys animals' habitats. An increasing human population means that more land must be converted for food production. Cars in the transportation industry give off emissions that contribute to pollution. Large corporations produce chemicals that leach into the soil and water. Introducing non-native species into an area may causes the destruction of the native habitat, threatening species that are native to the area.

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