Why does blue litmus paper turn red? Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic (i.e. alkaline) conditions. The pigment in blue litmus reacts with H+ ions and changes chemically so the bonds are ‘tuned’ to reflect a longer wavelength of light to appear red to our […]
Is it possible to get a flexible back?
Is it possible to get a flexible back? Increasing your flexibility can only be accomplished over time and can be a challenging task, depending on your body type. Stretching your back, along with other muscles that work in tandem with your back, is the best way to improve overall flexibility. Many yoga poses also incorporate […]
How do you make good choices in life?
How do you make good choices in life? 5 Reminders for Making the Right Choices in Life Always start with the end in mind. We make decisions, and those decisions turn around and make us. Make sure your choices are adding up. Knowing your desired “end” points to what matters now. Never fail to choose […]
What are the major air masses?
What are the major air masses? In the United States the major air mass types are typically continental Polar, maritime Polar, continental Tropical, and maritime Tropical. What does it mean when a storm moves east to west? Answer: The average hurricane moves from east to west due to the tropical trade winds that blow near […]
What is an identification variable?
What is an identification variable? An identification variable is an identifier declared in the FROM clause. An identification variable always designates a reference to a single value whose type is that of the expression used in the declaration. There are two kinds of declarations: range variable and collection member. Are variables and identifiers same? The […]
How many phases are there in grammar?
How many phases are there in grammar? The process normally goes through two distinct phases. What is clause English? Definition: A clause is a group of words that has both a subject and a predicate. Every complete sentence is made up of at least one clause. How many phases are there in English? Five Phases […]
What are two different ways you depend on the hydrosphere?
What are two different ways you depend on the hydrosphere? Human needs Humans use water in a number of ways. Drinking water is obviously very important, but water is also used domestically (e.g. washing and cleaning) and in industry. Water can also be used to generate electricity through hydropower. How does the hydrosphere support life? […]
What is the purpose of oxygen in the atmosphere?
What is the purpose of oxygen in the atmosphere? Oxygen from photosynthetic microbes eventually built up in the atmosphere, drastically changing our planet’s environment and the history of life in the process. Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. How is oxygen in the […]
Is pressure dependent on speed?
Is pressure dependent on speed? Pressure and velocity are inversely proportional to each other. If pressure increases, the velocity decreases to keep the algebraic sum of potential energy, kinetic energy, and pressure constant. How do I increase water pressure in my pipes? Now, if the gauge shows that the entire house has low water pressure, […]
Why a cart pulled by a horse can be moved?
Why a cart pulled by a horse can be moved? According to Newton’s third law of motion, action force is equal to reaction but acts on two different bodies and in opposite directions. When a horse pushes the ground, the ground reacts and exerts a force on the horse in the forward direction. This force […]