Do geese sleep while flying? Now, however, according to a new study from the Max Planck Institute for Ornithology, researchers have finally found evidence that birds do indeed sleep while flying. Why do birds fly in circles at sunset? Why do flocks of birds fly in a circle over the same place over and over […]
Which of the following action best describes conserving water?
Which of the following action best describes conserving water? Water is best conserved if it is used judiciously. What is the most appropriate use for graywater? Greywater is suitable for irrigating lawns, trees, ornamentals, and food crops. Is laundry water GREY water? Greywater is the waste water from showers, baths, spas, handbasins, laundry tubs, washing […]
Why is Feb only 28 days?
Is science the only way to know the truth?
Is science the only way to know the truth? And while science is a powerful force in understanding the way the world works, it is not truth. To draw the distinction, there are facts. There are things we observe about the world around us. But science itself isn’t just a collection of facts about the […]
Who invented circular motion?
Who invented circular motion? Newton Why is circular motion important in our daily lives? Circular motion is very common and very important in our everyday life. Satellites, the moon, the solar system and stars in galaxies all rotate in “circular” orbits. The term circular here is being used loosely since even repetitive closed motion is […]
What are causes of ocean acidification?
What are causes of ocean acidification? Ocean acidification is mainly caused by carbon dioxide gas in the atmosphere dissolving into the ocean. This leads to a lowering of the water’s pH, making the ocean more acidic. Many factors contribute to rising carbon dioxide levels. What happens during ocean acidification? When carbon dioxide (CO2) is absorbed […]
How is sound waves measured?
How is sound waves measured? Sound energy travels in waves and is measured in frequency and amplitude. Amplitude measures how forceful the wave is. Frequency is measured in the number of sound vibrations in one second. A healthy ear can hear sounds of very low frequency, 20 Hertz (or 20 cycles per second), to a […]
Why thick wires are used in transformer?
Why thick wires are used in transformer? When a transformer is in operation, there are ac currents in primary and secondary coils. This is the most important for the high current winding (the secondary coil of a step-down transformer). Thick copper wire is used for this winding, because thick wire of low resistivity has a […]
Can crystals help with anxiety?
Can crystals help with anxiety? Working with grounding stones to create a sense of balance tends to calm the mind quite a lot. Carlton suggests that smokey quartz, red jasper, agate, black tourmaline, shungite and haematite are all good options to meditate with, to help alleviate anxiety. Should I sleep with crystals under my pillow? […]
What is the importance of mixture?
What is the importance of mixture? Answer. Mixtures are just as important as elements, compounds or alloys. In fact, the air that you are breathing right now is a mixture of oxygen, nitrogen and some lesser gases! Mixtures are used in many processes, including steel manufacturing, the chemical industry and many others. What are the […]