What Implication S Does The Law Of Conservation Of Matter Have For Humans?
- Marvin Harvey
What implication(s) does the law of conservation of matter have for humans? Disposable goods are not going ‘away’ when we throw them out. under normal circumstances neither energy nor matter is created nor destroyed.
What implications does the law if conservation of matter have for humans?
4. What implication(s) does the law of conservation of matter have for humans? A. We cannot create energy because it is neither created nor destroyed.
Which of the following has the highest quality energy?
3.3 Energy Quality and Shifts in Composition of Energy Input – Energy quality is the relative economic usefulness per heat equivalent unit of different fuels and electricity. One way of measuring energy quality is the marginal product of the fuel, which is the marginal increase in the quantity of a good or service produced by the use of one additional heat unit of fuel.
These services also include services received directly from energy by consumers. Some fuels can be used for a larger number of activities and/or for more valuable activities. For example, coal cannot be used directly to power a computer whereas electricity can. The marginal product of a fuel is determined in part by a complex set of attributes unique to each fuel: physical scarcity, capacity to do useful work, energy density, cleanliness, amenability to storage, safety, flexibility of use, cost of conversion, and so on.
But also the marginal product is not uniquely fixed by these attributes. Rather the energy vector’s marginal product varies according to what activities it is used in, how much and what form of capital, labor, and materials it is used in conjunction with, and how much energy is used in each application.
Therefore, energy qualities are not fixed over time. However, it is generally believed that electricity is the highest quality type of energy, followed by natural gas, oil, coal, and wood and other biofuels in descending order of quality. This is supported by the typical prices of these fuels per unit of energy.
According to economic theory, the price paid for a fuel should be proportional to its marginal product. Samuel Schurr was among the first to recognize the economic importance of energy quality. Noting that the composition of energy use has changed significantly over time ( Fig.6 ), Schurr argued that the general shift to higher quality fuels reduces the amount of energy required to produce a dollar’s worth of GDP.
If this is ignored, apparent total factor productivity (TFP) growth is greater than is really the case. Researchers such as Cutler Cleveland, Robert Kaufmann, and the Office of Technology Assessment, have presented analyses that explain much of the decline in U.S. energy intensity in terms of structural shifts in the economy and shifts from lower quality fuels to higher quality fuels.
In a recent paper, Kaufmann estimated a vector autoregressive model of the energy/GDP ratio, household energy expenditures, fuel mix variables, and energy price variables for the United States. He found that shifting away from coal use and in particular shifting toward the use of oil reduced energy intensity. Figure 6, Composition of U.S. energy input. Figure 7 illustrates the increase in the second half of the 20th century in U.S. GDP and a quality-adjusted index of energy use computed by the author. The index accounts for differences in the productivity of different fuels by weighting them by their prices. Figure 7, United States gross domestic product (GDP) and quality-adjusted final energy use GDP is in constant dollars, i.e., adjusted for inflation. Energy use is a Divisia index (the accumulation of weighted sums of growth rates) of the principal final energy use categories (oil, natural gas, coal, electricity, biofuels, etc.).
How do the organisms living around Yellowstone hot springs get energy?
The ecological diversity of the Greater Yellowstone Ecosystem contributes to its value, and its controversy. Yellowstone’s northern range has been the focus of debate since the 1930s. NPS/Jacob W. Frank Cycles and processes are essential connections within an ecosystem.
Photosynthesis, predation, decomposition, climate, and precipitation facilitate the flow of energy and raw materials. Living things absorb, transform, and circulate energy and raw materials and release them again. Life forms are active at all levels. Microbes beneath Yellowstone Lake thrive in hydrothermal vents where they obtain energy from sulfur instead of the sun.
Plants draw energy from the sun and cycle nutrients such as carbon, sulfur, and nitrogen through the system. Herbivores, from ephydrid flies to elk, feed on the plants and, in turn, provide food for predators like coyotes and hawks. Decomposers—bacteria, fungi, other microorganisms—connect all that dies with all that is alive.
- The ecosystem is constantly changing and evolving.
- A wildland fire is one example of an integral, dynamic process.
- Fires rejuvenate forests on a grand scale.
- Some species of plants survive the intense burning to re-sprout.
- Some cones of lodgepole pines pop open only in heat generated by fires, spreading millions of seeds on the forest floor.
After fire sweeps through an area, mammals, birds, and insects quickly take advantage of the newly created habitats. Fires recycle and release nutrients and create dead trees or snags that serve a number of ecological functions, such as the addition of organic matter to the soil when the trees decompose.
- These cycles and processes are easily and frequently observed on Yellowstone’s northern range, which refers to the broad grassland that borders the Yellowstone and Lamar rivers in the northern portion of the park and into Montana.
- This area sustains one of the largest and most diverse communities of free-roaming large animals seen anywhere on Earth.
Many of the park’s ungulates spend the winter here. Elevations are lower, and the area receives less snow than elsewhere in the park. Often, the ridge tops and south-facing hillsides are clear of snow, a result of wind and sun. Animals take advantage of this lack of snow, finding easier access to forage. The northern range is a broad grassland that borders the Yellowstone and Lamar rivers in the northern portion of Yellowstone and into Montana. NPS
Which of the following does not recycle repeatedly through the Earth’s ecosystems?
Thus, the correct answer is ‘ Energy.
Does the law of conservation of energy apply to humans?
by Chris Woodford, Last updated: November 28, 2022. G obble down five bananas and you’ll have enough energy to swim for about an hour. That’s because your body is a complex machine capable of turning one kind of energy (food) into another kind (movement).
- Cars can pull off the same trick.
- Depending on which make and model you own, you probably know that it does so many kilometers or miles to the gallon; in other words, using a certain amount of energy-rich gasoline, it can transport you (and a moderate load) a certain distance down the road.
- What we have here are two examples of machines —the human body and the automobile—that obey one of the most important laws of physics: the conservation of energy,
Written in its simplest form, it says that you can’t create or destroy energy, but you can convert it from one form into another. Pretty much everything that has ever happened in the universe obeys this fundamental law. But why, and what use is it anyway? Let’s take a closer look! Photo: The conservation of energy: Walk upstairs and you have more potential energy when you get to the top than you had at the bottom—but you haven’t created energy out of thin air.
Does the law of conservation of energy applied to humans?
Energy Conversion in Humans – Our own bodies, like all living organisms, are energy conversion machines. Conservation of energy implies that the chemical energy stored in food is converted into work, thermal energy, and/or stored as chemical energy in fatty tissue. Figure \(\PageIndex \): Energy consumed by humans is converted to work, thermal energy, and stored fat. By far the largest fraction goes to thermal energy, although the fraction varies depending on the type of physical activity.