What are the harmful effects of photochemical smog? Harmful effects of photochemical smog: It corrode metals, stones, rubber and painted surface. It causes serious health problems to senior citizens, children and people with heart and lung problems which lead to emphysema, bronchitis, asthma. What are the negative environmental and health impacts of smog? Smog can […]
What are five ways to make an observation?
What are five ways to make an observation? Explain that an observation is information we gather about something by using our senses. List the five senses of sight, hearing, taste, touch, and smell. Use their senses to make observations about things in the classroom. What are the direct observation methods? Observations can also be either […]
Why the adsorption is always exothermic?
Why the adsorption is always exothermic? The particles are attached to the surface of another medium for the reaction to take place. During this process the residual forces on the surface of adsorbent decreases which in turn decreases the surface energy. This energy appears in the form of heat, hence adsorption is exothermic in nature. […]
Which of the following accurately describes what makes a material a good conductor?
Which of the following accurately describes what makes a material a good conductor? When discussing what makes a material a good conductor you say, “They must resist neutron flow.” readily accept electron flow.” readily accept neutron flow.” resist electron flow.” If you are looking for a material that is a good conductor, you will look […]
How do rocks handle stress?
How do rocks handle stress? Rocks have three possible responses to increasing stress (illustrated in Figure below): elastic deformation: the rock returns to its original shape when the stress is removed. plastic deformation: the rock does not return to its original shape when the stress is removed. fracture: the rock breaks. What causes rocks to […]
How many different types of batteries are there?
How many different types of batteries are there? three types What is the main function of a battery? A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The […]
Why does cooling rate affect crystal size?
Why does cooling rate affect crystal size? As the rate of cooling increases, crystal size decreases. This means that something which cools very quickly will have smaller crystal formations, and something which cools slowly will have larger crystal formations. This is easily seen in igneous rock, which may cool at variable rates. What factors affect […]
What material expands the most when heated?
What material expands the most when heated? By contrast, iron, with a coefficient of 1.2, is 24 times more likely to expand or contract as a result of changes in temperature. (Steel has the same value as iron.) The coefficient for aluminum is 2.4, twice that of iron or steel. Which state of matter contracts […]
What force is used to lift a weight?
What are three primary methods of monitoring volcanic activity?
What are three primary methods of monitoring volcanic activity? Volcanologists use many different kinds of tools including instruments that detect and record earthquakes (seismometers and seimographs), instruments that measure ground deformation (EDM, Leveling, GPS, tilt), instruments that detect and measure volcanic gases (COSPEC), instruments that determine how much lava is … How can we detect […]