What happens when a warm and cold air mass collide? When a warm air mass meets a cold air mass, the warm air rises since it is lighter. As it rises, the warm air cools rapidly. This configuration, called a cold front, gives rise to cumulonimbus clouds, often associated with heavy precipitation and storms. What […]
How many times more light can the telescope gather than the human eye?
How many times more light can the telescope gather than the human eye? So the telescope can gather light for 900 times longer than the eye, to make a single image! The long exposure time of the telescope’s camera enables it to gather much more light than the eye. This enables telescopes to detect much […]
What are the 3 major types of galaxies?
What are the 3 major types of galaxies? Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars. What is older than the universe? Our Sun is […]
What holds nucleus together?
What holds nucleus together? strong nuclear force Which element has the most stable nucleus in the universe? Iron 56 Which is the least stable nuclide? Elements with atomic number less than 83 have at least one stable isotopes except technetium (Tc, Z = 41) and promethium (Pm, Z = 61). Why is s 32 A […]
What is the cause of resistance?
What is the cause of resistance? Resistance is caused in a conductor by the free electrons. These free electrons collide with each other and with the ions and atoms that oppose their free movement. This obstruction is known as resistance. Does temperature increase resistance? As electrons move through a metal conductor, some collide with atoms, […]
Which best describes a difference between transformations in power plants and dams?
Which best describes a difference between transformations in power plants and dams? The difference between the energy transformations in power plants and dams would be that dams are the ones who uses mechanical energy to produce electricity. It uses turbines to convert mechanical to electrical. Which best describes a difference between energy transformations in power […]
What are the 5 major divisions of physical science?
What are the 5 major divisions of physical science? Terms in this set (33) Five major divisions of physical science. Physics, Chemistry, Astronomy, Meteorology and Geology. Science. An organized body of knowledge about the natural universe. Scientific Method. Elements of Scientific Method. Mechanics. Standard Unit. System of Units. Length. Which of the following is an […]
At what temperature does all motion cease theoretically?
At what temperature does all motion cease theoretically? A temperature scale whose zero point is absolute zero, the temperature of 0 entropy at which all molecular motion stops, -273.15° C. The size of a degree Kelvin is the same as the size of a degree Celsius. Which temperature does all molecular motion steps? Step by […]
Where is the epicenter of the earthquake?
Where is the epicenter of the earthquake? epicenter. The epicenter is the point on the earth’s surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins. Which point is nearest to the epicenter? The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is […]
Can you see a molecule?
Can you see a molecule? This, believe it or not, is a microscope. It can help us see very small particles like molecules by feeling the particle with the tip of its needle. These very powerful microscopes are called atomic force microscopes, because they can see things by feeling the forces between atoms. … What […]