How do you know what the dependent variable is? The variables in a study of a cause-and-effect relationship are called the independent and dependent variables. The independent variable is the cause. Its value is independent of other variables in your study. The dependent variable is the effect. Its value depends on changes in the independent […]
What temperature do kettles boil to?
What temperature do kettles boil to? The boiling point of water changes depending on altitude or the amount of impurities in the water, so a thermostat that stops boiling the water at exactly 100°C presents a problem. At sea level, water boils at 100°C, but for every 150-metre increase in elevation, water’s boiling point lowers […]
What element is not found in nature?
What element is not found in nature? Technetium. The first element that was synthesised, rather than being discovered in nature, was technetium in 1937. This discovery filled a gap in the periodic table, and the fact that no stable isotopes of technetium exist explains its natural absence on Earth (and the gap). What is a […]
What is difference between model and theory?
What is difference between model and theory? Models are a visual and verbal representation of theories or concepts whereas theories are conceptual framework ideas on a phenomenon. Models simplify a theory or concept for better understanding whereas theories explain or predict a phenomenon with their knowledge and understanding regarding the phenomena. Why do we use […]
Is the changing of liquid water to water vapor?
Is the changing of liquid water to water vapor? Evaporation – Evaporation happens when heat from the Sun turns liquid water into water vapor (gas). About 90% of the water in the atmosphere comes from evaporation. Most evaporation occurs in the oceans, because they cover so much of Earth’s surface. Why do we see droplets […]
What helps the cell maintain its shape?
What helps the cell maintain its shape? The cytoskeleton is a structure that helps cells maintain their shape and internal organization, and it also provides mechanical support that enables cells to carry out essential functions like division and movement. How is sugar broken down into carbon dioxide? Through the process of cellular respiration, the energy […]
Is physics a respected degree?
Is physics a respected degree? Physics degrees are highly respected by employers and offer ample career opportunities. The workload can be quite heavy and the hours are long, but if you’re enthusiastic about unravelling the secrets of the universe, it’s a great choice. Where can a physics degree take you? Jobs directly related to your […]
What was the climate like in Cenozoic Era?
What was the climate like in Cenozoic Era? The climate, which had been warm and moist in the Eocene, became cool, dry, and seasonal. For the first time in the Cenozoic, Antarctica was covered extensively with glaciers, which lowered sea level. Farther north, temperate forests replaced subtropical forests. Does Cenozoic mean new life? Cenozoic, meaning […]
What happens if a satellite is moving too fast enough to stay in orbit?
What happens if a satellite is moving too fast enough to stay in orbit? If the satellite is thrown out too fast it will escape from the Earth’s orbit because the gravitational pull is not sufficient to provide the required centripetal force. With the correct launch speed the satellite continues in its falling orbit around […]
What are some major similarities and differences between freshwater and marine ecosystems Site 1?
What are some major similarities and differences between freshwater and marine ecosystems Site 1? Freshwater ecosystems have a lot more species. (Mostly of microorganisms). A lot of bacteria thrive there. Marine ecosystems are more deserted and life thrives only by the shores which is mostly made of larger animal(excluding plankton) and basic plants. What are […]