Answer:
A scientific model is a representation model for a certain scientific concept. Scientific models make it easier to study a phenomenon as they tend to model out the exact phenomenons.
A drawing of an skeleton would be unclear as the children might not be able to locate certain features in the drawing. For example, a certain joint could be missed by the teacher in the drawing or the child might not exactly be able to locate where the joint or bone is present.
But as the model will be more real to the actual skeleton system hence, studying through a skeleton will make it a lot easier to study the human skeletal system.
The shape of the phosphorus trichloride is a trigonal pyramid.
<span>Phosphorus trichloride consists of phosphorus and chlorine and its chemical formula is PCl3. This molecule is involved in redox reactions and can act both as electrophile and nucleophile. PCl is a precursor to other phosphorus chlorides: PCl5, POCl3 and PSCl3</span>
The agriculture is one of the biggest contaminators of the groundwater. The contamination happens through the usage of chemicals in the agriculture for protection of the plants, or to encourage their growth. Part of those chemicals mange to wash through the soil and reach the groundwater. The majority of the groundwater is connected with the lakes and the rivers, thus the chemicals reach those waters as well. This makes these waters unusable for the humans because they are becoming toxic. The end result would be much less freshwater for usage, be it fro drinking, or for housework, as it can cause serious damage and even death if used, so a shortage of water would be inevitable.
A windmill’s blades move from the blowing wind. The movement of the blades represents kinetic energy.
The visible light that allows people to see where they are going describes radiant energy.
<u>Explanation:
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An object possesses an energy due to its motion is referred as kinetic energy. Whereas energy due to position of an objects called potential energy.
When the wind blows, its blade catches kinetic energy and rotate to transform into mechanical energy. Hence, the blade's rotation denotes kinetic energy.
Radiant energy is simply energy transmitted by waves or sometimes by particles. It is energy emitted by electromagnetic radiation. It is also a kind of kinetic energy.
Because particles move when they move light, heat and radiation from one source to another. Therefore, Radiant energy denotes when visible light permits people to see where they go.
