Does the path of the sun change with the seasons? As can be clearly seen the two paths are different, with it been longer and higher in the sky in summer and shorter and lower in the sky during winter. The longer the path, longer is the duration of the sun’s stay in the sky. […]
What did humans eat before tools?
What did humans eat before tools? They want meat, sure. But what they actually live on is plant foods.” What’s more, she found starch granules from plants on fossil teeth and stone tools, which suggests humans may have been eating grains, as well as tubers, for at least 100,000 years—long enough to have evolved the […]
How many deep breaths per minute is normal?
How many deep breaths per minute is normal? So, What Is “Normal Breathing”? Normal breathing at rest is 8-12 breaths per minute. That may not sound like enough, as many of us breathe around 25 breaths per minute. In many cases, this rate of breathing is related to high anxiety and stress levels. What is […]
What is the mass of one mole of nitrogen atom?
Is it bad to cut springs to lower car?
What ozone layer absorbs Mcq?
What ozone layer absorbs Mcq? Explanation: The ozone layer absorbs the medium frequency UV radiations from the sun and hence protects the life forms at the surface from harm. Are HCFCs ozone depleting? The HCFCs are one class of chemicals being used to replace the CFCs. They contain chlorine and thus deplete stratospheric ozone, but […]
What are the six signs of a chemical reaction?
What are the six signs of a chemical reaction? Key Concepts: Color Change. Production of an odor. Change of Temperature. Evolution of a gas (formation of bubbles) Precipitate (formation of a solid) Which type of reaction is NaCl agno3? double displacement reaction What is the balanced equation for AgNO3 NaCl? AgNO3 + NaCl = AgCl […]
Which is the hottest layer in the atmosphere?
Which is the hottest layer in the atmosphere? thermosphere What two layers are in the thermosphere? The thermosphere lies between the exosphere and the mesosphere. “Thermo” means heat, and the temperature in this layer can reach up to 4,500 degrees Fahrenheit. If you were to hang out in the thermosphere, though, you would be very […]
How long does egg in a bottle take?
What are the 5 types of catapults?
What are the 5 types of catapults? There are five historical types of catapults: the mangonel, onager, ballista and trebuchet, using three types of motive force: tension, torsion and gravity. Side view of a torsion powered mangonel catapult in the cocked position. Who invented a catapult? Greek Dionysius the Elder Who invented the trebuchet catapult? […]