How can we prevent the global warming? How Can We Stop Global Warming? Recycle more. The aim is to cut down the amount of carbon dioxide released in the environment. Drive less. Plant trees. Switch to renewable energy. Use energy-efficient devices. Use less hot water. Turn off electronic devices. Spread awareness. What are ways to […]
What are the common deficiency diseases?
What are the common deficiency diseases? Any currently treated or untreated nutrient deficiency or disease. These include, but are not limited to, Protein Energy Malnutrition, Scurvy, Rickets, Beriberi, Hypocalcemia, Osteomalacia, Vitamin K Deficiency, Pellagra, Xerophthalmia, and Iron Deficiency. How do you know if your body is lacking vitamins? 8 Common Signs You’re Deficient in Vitamins […]
What describes the movement of wind?
What describes the movement of wind? Movement of air caused by temperature or pressure differences is wind. Consequently, air blows anticlockwise around a low pressure centre (depression) and clockwise around a high pressure centre (anticyclone) in the northern hemisphere (see Figure 3.1). Which set of conditions describes a low pressure system? Explanation: A low pressure […]
Which circuit is better series or parallel?
Which circuit is better series or parallel? Two bulbs in a simple parallel circuit each enjoy the full voltage of the battery. This is why the bulbs in the parallel circuit will be brighter than those in the series circuit. Another advantage to the parallel circuit is that if one loop is disconnected, then the […]
What are the top 5 exercises?
What are the top 5 exercises? 7 Most Effective Exercises Walking. Any exercise program should include cardiovascular exercise, which strengthens the heart and burns calories. Interval training. Squats. Lunges. Push-ups. Abdominal Crunches. Bent-over Row. How can I get my flexibility back? Bend your knees and keep a straight back when picking up your weight. Place […]
Why would air pressure be greater at sea level than it would be on the top of a mountain?
Who invented 360 degrees?
Who invented 360 degrees? Timocharis, Aristarchus, Aristillus, Archimedes, and Hipparchus were the first Greeks known to divide the circle in 360 degrees of 60 arc minutes. Eratosthenes used a simpler sexagesimal system dividing a circle into 60 parts. What is 360 rotation? “Doing a 360” means spinning around completely once (spinning around twice is a […]
How do liquids compare to density?
What is the difference between salt and sugar dissolving in water?
What is the difference between salt and sugar dissolving in water? The oppositely charged ends of polar water molecules attract the ions and pull them away, resulting in dissolving. Sugar is made from sucrose molecules which are larger and more complex than the ions in salt (See Teacher Background Lesson 1.2). When sugar dissolved in […]
How cold can a Stirling engine get?
How cold can a Stirling engine get? If you design the machine correctly, the cold end will get extremely cold. In fact, Stirling coolers have been made that will cool below 10 degrees Kelvin. Micro Stirling coolers have been produced in large numbers for cooling infrared chips down to 80 degrees Kelvin for use in […]