Which is hotter magma or lava? When geologists refer to magma, they’re talking about molten rock that’s still trapped underground. If this molten rock makes it to the surface and keeps flowing like a liquid, it’s called lava. They’re also the hottest variety of magma, reaching temperatures between 1,800 degrees to 2,200 degrees Fahrenheit. Whats […]
Is sodium and magnesium an ionic compound?
Is sodium and magnesium an ionic compound? There is a strong electrostatic force of attraction between these oppositely charged ions – this is called an ionic bond. The slideshow shows ionic bonds being formed in sodium chloride, magnesium oxide and calcium chloride. How do you combine ionic charges? To find the formula of an ionic […]
What are disadvantages of DC?
What are disadvantages of DC? Disadvantages of DC Transmission: Due to commutation problem, electric power can’t be produced at High (DC) Voltage. In High Voltage transmission, we cant step-up the level of DC Voltage (As Transformer won’t work on DC). There is a limitation of DC switches and circuit breakers (and they are costly too). […]
What is sliding friction with example?
What is sliding friction with example? Specific examples of sliding friction include: Rubbing both hands together to create heat. A sled sliding across snow or ice. Skis sliding against snow. A person sliding down a slide is an example of sliding friction. What is the formula for sliding friction? The coefficient of friction (fr) is […]
Do cameras reflect or refract light?
Do cameras reflect or refract light? Yes, cameras refract light. The refraction of light happens as it travels through the lens of the camera and creates a larger or smaller picture…. How do mirrors and lenses affect the path of light rays? Summary: How do lenses and mirrors affect light? Plane mirrors and convex mirrors […]
What does not affect the pressure at a point beneath the surface of a liquid?
What are 2 similarities and 2 differences between ionic and covalent bonds?
What are 2 similarities and 2 differences between ionic and covalent bonds? The molecules that are formed from the ionic and covalent bonds are neutral. This is because, in an ionic bond, two opposite charges cancel each other while in a covalent bond, neutral components shared the pair of electrons. Ionic and covalent, both are […]
What are the main factors of contact metamorphism?
What are the main factors of contact metamorphism? The main factors that control metamorphic processes are: The mineral composition of the parent rock. The temperature at which metamorphism takes place. The amount and type of pressure during metamorphism. The types of fluids (mostly water) that are present during metamorphism. The amount of time available for […]
What are the three causes of mutation?
What are the three causes of mutation? Mutations are caused by environmental factors known as mutagens. Types of mutagens include radiation, chemicals, and infectious agents. Mutations may be spontaneous in nature. How many days is a mutation? The process takes 15 days to a month after which mutation certificate is issued. The local civic body […]