Category: Psychology

What is periscope mention its principle and uses? A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. Light from a distant object strikes the top mirror and is then reflected at an angle of 90 degrees down the periscope tube. What is a […]

What were common diseases in the 1800s? Diseases and epidemics of the 19th century included long-standing epidemic threats such as smallpox, typhus, yellow fever, and scarlet fever. In addition, cholera emerged as an epidemic threat and spread worldwide in six pandemics in the nineteenth century. What was the leading cause of death in the 1800s? […]

What is the northernmost Florida Key? Key Largo What islands are close to Key West? The Dry Tortugas are a cluster of islands located about 70 miles west of Key West. How many islands does the Florida Keys have? 1,700 islands How long is a boat ride from Florida to Cuba? about 10 hours Can […]

What is John Steinbeck known for? The Grapes of Wrath What did John Steinbeck use to write? His original choice of pencil was a Mongol 2 3/8 F which he described as ‘quite black and holds its point well. ‘ Steinbeck would keep dozens of them in his pencil tray and sharpen them all with […]

What symmetry does a heart have? reflection symmetry How do you know if a shape has rotational symmetry? A shape has rotational symmetry when it can be rotated and it still looks the same. The order of rotational symmetry of a shape is the number of times it can be rotated around a full circle […]

Can a bad MAF sensor cause smoke? A faulty MAF sensor can cause your vehicle to run too rich or run too lean. You’ll notice if the tailpipes eject black smoke or when the engine runs rough or backfires. You may also notice you’re filling up at the gas station more than usual. What is […]

What artists use recycled materials? 13 Incredible Artivists Using Recycled Materials in Their… Barefooted Welder | Scrap metal sculptor from Australia. HA Schult | Sculptures made out of garbage. Robert Bradford | Sculptures made out of recycled toys. Steven Rodrig | PCB sculptures using discarded electronics. Guerra de la Paz | Sculptures made of recycled […]

How can a teen start a love story? Start with one of your two main characters. Readers expect the first character they meet in the story to be either the hero or the heroine (and most often it is the heroine), and they’re immediately prepared to care about this person. What are some good story […]

What is a perforation error on a stamp? Imperforate errors: Sometimes referred to as a perforation error, this occurs when perforations are missing from one or several sides of a stamp. Perforations are a series of small holes or apertures which are designed to enable easier separation of the stamps in a sheet. How do […]

What is a tribute speech at a funeral? A memorial tribute is a speech given at a funeral or memorial service, usually by someone close to the person who died. It may include a brief history of life, personal memories, anecdotes, interests or hobbies, and favorite quotes. Preparation is important , especially because of the […]