What reflects the most solar radiation? The surface of the Earth absorbs 51 percent of the insolation. Water vapor and dust account for 16 percent of the energy absorbed. The other 3 percent is absorbed by clouds. Of the 30 percent that is reflected back into space, 6 percent is reflected by air and dust. […]
What does the one minute sit up test show in terms of fitness?
What does the one minute sit up test show in terms of fitness? The 1-minute full sit-ups test is currently being widely used in physical fitness test batteries to assess abdominal strength and endurance. Full sit-ups use the hip flexors as well as the abdominals and have been known to increase anterior pelvic tilt, and […]
How can you tell if a precipitate has formed in solution?
How can you tell if a precipitate has formed in solution? The identity of the precipitate can often be determined by examining solubility rules. It also occurs in single displacement when one metal ion in solution is replaced by another metal ion. Notice the new solid forming on the bottom of the tube. Which solution […]
What is the difference between electric field and force?
What is the difference between electric field and force? The strength of the electric field is defined as the electrostatic force experienced by a small test charge qo placed at that point divided by the charge itself. The electric field is a vector, and its direction is the same as the direction of the force […]
What is difference between igneous and sedimentary rocks?
What is difference between igneous and sedimentary rocks? There are three kinds of rock: igneous, sedimentary, and metamorphic. Igneous rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water. They accumulate in layers. What are the […]
What are the similarities between Venus and Mars?
What are the similarities between Venus and Mars? Venus’s atmosphere is thick and dense, whereas that of Mars is light and tenuous. Despite the differences, the magnetometer instruments have discovered that the structure of the magnetic fields of both planets are alike. What characteristics do Venus and Earth share? Earth and Venus has similar size, […]
What does a negative angular acceleration indicate to you?
What does a negative angular acceleration indicate to you? Negative angular velocity(ω) means that the particle is revolving anticlockwise. Thus, negative angular acceleration(α) is a “push” in the anticlockwise direction. If α and ω have the same sign, the body will speed up, else slow down (and eventually go in reverse). Is clockwise positive or […]
How much forest is cut down for agriculture?
How much forest is cut down for agriculture? Rainforests across the world are in great danger. Food and Agriculture Organization’s 2016 State of the Forests report revealed that 7 million hectares of forest are lost annually while agricultural land expands by 6 million. Does agriculture affect rainforest? Agricultural use of some rainforest land proves to […]
What stops cells from growing?
What stops cells from growing? In the absence of sugar, TORC1s assemble into a tubular structure, rendering them inactive and thus cell growth stops. TORC1 is an enzyme complex that controls the normal growth of our cells; but, when too active, it can promote diseases such as cancer. How do you stop cells from dividing? […]