Category: Physics

Does hot air have higher pressure than cold air? Cold air is more dense, therefore it has a higher pressure. Warm air is less dense and has a lower pressure associated with it. Remember, heat is less dense than cold air so the warm air will rise. When a warm and a cold air mass […]

What are the three types of UV radiation? What are the different types of UV radiation rays? UV radiation is classified into three primary types: ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC). What do UV telescopes observe? Ultraviolet telescope, telescope used to examine the ultraviolet portion of the electromagnetic spectrum, between the […]

What is the difference between a community and a population? A Population is group of organisms of the SAME species living in the same area at the same time and sharing a common gene pool. In ecology, the term Community refers to the populations of animals and plants that live within a specific region under […]

What are the 3 Fastest things in the world? From cheetahs to airplanes: 11 of the fastest things out there Land animal: the cheetah. Air animal: the peregrine falcon. Sea animal: the black marlin. Automotive: Bugatti Veyron EB 16.4. Airplane: Lockheed SR-71 Blackbird. Train: JR-Maglev. Rapper: Twista. Painter: Morris Katz. Who is the world’s fastest […]

What hormone controls your period? The menstrual cycle is regulated by the complex interaction of hormones: luteinizing hormone, follicle-stimulating hormone, and the female sex hormones estrogen and progesterone. What are the 4 phases of menstrual cycle? The four phases of the menstrual cycle are menstruation, the follicular phase, ovulation and the luteal phase. How many […]

What will increase the rate at which a solid dissolves in a liquid? Increasing the surface area of the solute will increase the rate of dissolving. For example, if you place a whole sugar cube in water it will take a really long time for it to dissolve. Stirring will also speed up the rate […]

What organ is the fattest? the brain What is a leg bone called? Overview. The lower leg is comprised of two bones, the tibia and the smaller fibula. The thigh bone, or femur, is the large upper leg bone that connects the lower leg bones (knee joint) to the pelvic bone (hip joint). What are […]

What is a simple definition of an acid? An acid is any hydrogen-containing substance that is capable of donating a proton (hydrogen ion) to another substance. A base is a molecule or ion able to accept a hydrogen ion from an acid. Acidic substances are usually identified by their sour taste. What is an acid […]

How can water be both an acid and a base? Water can act as both an acid and a base in solution and undergoes autoionization where it can be both an acid and a base to itself. When mixed with an acid, water accepts hydrogen ions and acts as a base. However, when water is […]

What time of the year is night and day equal? Marking the beginning of spring, the sun will cross the plane of the earth’s equator on Monday morning, making day and night of approximately the same duration. The event, known as equinox, is eagerly awaited by space enthusiasts as it takes place only twice a […]