What stage of sleep is hardest to awaken? It is most difficult to awaken people from slow-wave sleep; hence it is considered to be the deepest stage of sleep. Following a period of slow-wave sleep, however, EEG recordings show that the stages of sleep reverse to reach a quite different state called rapid eye movement, […]
What happens when a solid is dissolved in a liquid?
What happens when a solid is dissolved in a liquid? In the simplest case it involves mixing two materials together. The most common examples of dissolving involve a solid and a liquid, usually water. When a solid dissolves the solid (solute) and the liquid (solvent) form a very close intimate mixture called a solution. Why […]
What is the difference between synoptic and prognostic charts?
What is the difference between synoptic and prognostic charts? 2. How are prognostic charts different from synoptic weather maps? Prognostic charts are computer generated forecast showing the expected pressure pattern at a specific future time. Synoptic weather maps describe the state of the atmosphere over a large area at a given moment. What is good […]
What is the SI base unit of mass?
What is the SI base unit of mass? kilogram (kg) What is the purpose of SI base units? The SI base units are a fundamental part of modern metrology, and thus part of the foundation of modern science and technology. The SI base units form a set of mutually independent dimensions as required by dimensional […]
What are all the structures in cytoplasm?
What are all the structures in cytoplasm? It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus. All of the organelles in eukaryotic cells, such as the nucleus, endoplasmic reticulum, and mitochondria, are located in the cytoplasm. Which […]
What are the 5 types of musical instruments?
What are the 5 types of musical instruments? The five major types of musical instruments are percussion, woodwind, string, brass and keyboard. What instrument makes a loud sound? According to the Guinness Book of World Records, the loudest (and largest) instrument in the world is the Boardwalk Hall Auditorium Organ. This pipe organ was built […]
Are the layers still horizontal or are they bent Why?
Are the layers still horizontal or are they bent Why? Answer. Answer: Figure 10.6: Rocks that were originally deposited in horizontal layers can subsequently deform by tectonic forces into folds and faults. Folds constitute the twists and bends in rocks. How is horizontal unconformity formed? An angular unconformity is an unconformity where horizontally parallel strata […]
Do forces have direction?
Do forces have direction? A force is a vector quantity. As learned in an earlier unit, a vector quantity is a quantity that has both magnitude and direction. Because a force is a vector that has a direction, it is common to represent forces using diagrams in which a force is represented by an arrow. […]
What is the difference between control variable and independent variable?
What is the difference between control variable and independent variable? Independent variable – the variable that is altered during a scientific experiment. Controlled variable – a variable that is kept the same during a scientific experiment. Any change in a controlled variable would invalidate the results. What is the different types of variables? Parts of […]