How long is an eon? one billion years What event started the Archean eon? Geologic Stage. During the beginning of the Archean Eon, about 4 billion years ago, as the frequency of meteorite impacts slowed, the Earth cooled, clouds formed, and the crust began to harden from the molten globe. The Earth was still a […]
Why do we need to wipe and dry the kitchen utensils after washing?
Why do we need to wipe and dry the kitchen utensils after washing? The objective of cleaning and sanitizing food contact surfaces is to remove food (nutrients) that bacteria need to grow, and to kill those bacteria that are present. It is important that the clean, sanitized equipment and surfaces drain dry and are stored […]
How do you ask a friend for help?
How do you ask a friend for help? How to Ask Your People for Emotional Support Ask Yourself First. Ask yourself, “What would make me feel better?” It could be for any situation, like trying to finish a master’s degree, plan a wedding, deal with a family illness, or finish IVF treatment. Use Scripts and […]
What are the similarities and differences between evaporation and boiling?
What are the similarities and differences between evaporation and boiling? Differences between evaporation and boiling Evaporation Boiling Latent heat required for evaporation is collected from liquid itself. For boiling, necessary latent heat is supplied externally. Temperature of liquid decreases gradually due to evaporation. During boiling, temperature of the liquid remains constant. What is the difference […]
What are the 2 types of fiber-optic cable?
What are the 2 types of fiber-optic cable? There are two primary types of fibre – multimode and singlemode. Multimode fibre can carry multiple light rays (modes) at the same time by having varying optical properties at the core; essentially light travelling the shortest path (down the middle) travels the slowest. Who invented Fibre optic? […]
What unit is used to express the average kinetic energy of a system?
What unit is used to express the average kinetic energy of a system? Kinetic energy is usually measured in units of Joules (J); one Joule is equal to 1 kg m2 / s2. Calculate the kinetic energy in Joules possessed by each of the following objects. Which expression defines the change in free energy? The […]
What is the importance of geological time scale?
What is the importance of geological time scale? The geologic time scale is an important tool used to portray the history of the Earth—a standard timeline used to describe the age of rocks and fossils, and the events that formed them. It spans Earth’s entire history and is separated into four principle divisions. Which best […]
What is the main function of cylinder head?
What is the main function of cylinder head? They’re key to controlling air flow in and out of the cylinders and fuel deployment. The cylinder head also holds the injectors and valves – and contains more moving parts than any other part of the engine. Although largely unnoticed, the cylinder head plays a key role […]
What best describes a recessive allele?
What best describes a recessive allele? The best description of a recessive allele is that in does not determine the phenotype when a dominant allele for the same trait is present. What are 2 dominant alleles called? Homozygous dominant individuals have two dominant alleles, which produce the same enzyme. In homozygous recessive individuals, no dominant […]
What month is best for Northern Lights?
What month is best for Northern Lights? But here’s the good news: The time is right to get a glimpse of the aurora borealis. Thanks to longer hours of darkness and clear night skies, December through March is usually the best time to observe this elusive natural phenomenon (though you can sometimes see the northern […]