How does pollution affect marine life? It is estimated that up to 13 million metric tons of plastic ends up in the ocean each year—the equivalent of a rubbish or garbage truck load’s worth every minute. Fish, seabirds, sea turtles, and marine mammals can become entangled in or ingest plastic debris, causing suffocation, starvation, and […]
What is a controlled experiment?
What is a controlled experiment? A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a few) factors are changed at a time, while all others are kept constant. What are the five main characteristics of scientific inquiry? The 5 features of science inquiry (emphasis is mine) Learner Engages […]
Which gas is produced when coal is burnt in air?
Which gas is produced when coal is burnt in air? But when coal burns, its carbon combines with oxygen in the air and forms carbon dioxide. Carbon dioxide (CO2) is a colorless, odorless gas, but in the atmosphere, it is one of several gases that can trap the earth’s heat. What is produced when coal […]
What UV wavelength is dangerous?
What UV wavelength is dangerous? UV-B light (290-320nm) causes sunburns with prolonged exposure along with increasing the risk of skin cancer and other cellular damage. About 95% of all UV-B light is absorbed by the ozone in Earth’s atmosphere. UV-C light (100-290nm) is extremely harmful and is almost completely absorbed by Earth’s atmosphere. What is […]
Who won the 7 Days Battle?
Who won the 7 Days Battle? Seven Days Battles George B. McClellan and Robert E. Lee, respective commanders of the Union and Confederate armies in the Seven Days Date June 25 – July 1, 1862 Location Hanover County and Henrico County, Virginia Result Confederate victory Belligerents United States (Union) Confederate States (Confederacy) What was the […]
Which hormones are responsible for changes in human body?
Which hormones are responsible for changes in human body? Testosterone is the hormone that causes most of the changes in a guy’s body during puberty. What are the two main types of hormones in the body? 1) Protein hormones (or polypeptide hormones) are made of chains of amino acids. An example is ADH (antidiuretic hormone) […]
How much heat is needed to melt 23.50 kg of silver that is initially at 25 C?
Which metal is used in wires?
Which metal is used in wires? Copper Which wire can carry a higher current? Answer. “In solid wire of same length resistance of that wire is higher than stranded wire”. Hence stranded wire carries more current than solid wire due to lower resistance. Thus due to extra surface area more surface current flows Therefore in […]
Why headrests are detachable?
What do you mean by space quantization?
What do you mean by space quantization? : quantization in respect to direction in space the space quantization of an atom in a magnetic field whose quantum states correspond to a limited number of possible angles between the directions of the angular momentum and the magnetic intensity. Which experiment confirms the energy quantization and how? […]