Category: Physics

What is the energy obtained from Earth called? Geothermal energy is heat within the earth. The word geothermal comes from the Greek words geo (earth) and therme (heat). Geothermal energy is a renewable energy source because heat is continuously produced inside the earth. How is energy from the volcanoes generate electricity? Geothermal energy uses the […]

Are blue eyes from Vikings? Not only did many of the studied Vikings turn out to not be blond or blue-eyed, their genetic admixture shows they weren’t a distinct ethnic group but rather a mix of various other groups, “with ancestry from hunter-gatherers, farmers, and populations from the Eurasian steppe.” How can you tell if […]

What is a dry season with God? If you’ve been feeling weary or discouraged in your relationship with God you may be in a spiritual dry season or drought. When I first began following God (not at the age of 8, but in my early 20’s) I was on a spiritual high. What is the […]

What happens if you ice for more than 20 minutes? Greater than 20 minutes of icing can cause reactive vasodilation, or widening, of the vessels as the body tries to make sure the tissues get the blood supply they need. Studies have also shown 30 to 40 minutes in between icing sessions are needed to […]

Which type of element is most common? Hydrogen What are the basic elements of the universe? THE FIVE BASIC ELEMENTS of the UNIVERSE: Fire, Earth, Metal, Water, Wood. The Five Basic Elements are Fire, Earth, Water, Metal, and Wood. Is hydrogen the most important element in the universe? Composed of a single proton and a […]

Do microwaves only heat up water? In summary: microwave ovens only really heat water (well), so yes they only heat the water in food; however, it doesn’t have to be liquid, it just absorbs more of the microwaves actually produced, causing liquid water to heat much more rapidly. Further more: yes absolutely your hand would […]

How does temperature affect direction of reaction? A decrease in the temperature of a system favors the direction of the reaction that releases heat, the exothermic direction. Therefore, an increase in temperature of the system will favor the forward reaction. Conversely, a decrease in temperature will favor the reverse reaction. How does change in temperature […]

Does gravity affect aging? There is no correlation between Gravity and aging. Aging is a process that is independent of Gravity. Gravity is a property of matter. Has more to do with atmospheric pressure than the effects of Gravity. Is gravity necessary for life? Gravity is very important to us. We could not live on […]

Can scissors float on water? Light objects are pushed back to the surface by an object’s upthrust. If the item is too heavy, the upthrust will not be strong enough to push it up, causing it to sink. For example, many children noted that the scissors are made of metal and the metal is heavy, […]

Is it true most elements do not change? Most elements DO NOT change. Some ELEMENTS can decay over time. The rate of decay of any radioactive element CHANGES FREQUENTLY. Geologists use radioactive dating to determine THE ABSOLUTE AGES OF ROCKS. What are the two types of radioactive decay? The two most common modes of natural […]