Identify each activity as an observation, a hypothesis, an experiment, or a conclusion
Lucia wants to develop a process for dyeing shirts so that the color will not fade when the shirt is washed. She proceeds with the following activities:A. Lucia notices that the dye in a design fades when the shirt is washed.
B. Lucia decides that the dye needs something to help it combine with the fabric.
C. She places a spot of dye on each of four shirts and then places each one separately in water, salt water, vinegar, and baking soda and water.
D. After one hour, all the shirts are removed and washed with a detergent.
E. Lucia notices that the dye has faded on the shirts in water, salt water, and baking soda, while the dye did not fade on the shirt soaked in vinegar.
F. Lucia thinks that the vinegar binds with the dye so it does not fade when the shirt is washed.
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Ответ:
A- observation
B- hypothesis
C,D,E- experiment
F- conclusion
Explanation:
Lucia has just carried out the scientific process. An observation refers to paying close attention to a particular phenomenon in nature. This leads to the proposition of an intelligent guess about the observed phenomenon. This intelligent guess is called a hypothesis.
The hypothesis now guides the design of an experiment designed to confirm or disprove the hypothesis. The results of the experiment now leads to the formulation of a conclusion as Lucia has just done.
Ответ:
The biogeochemical cycles move through mainly the biotic and abiotic components of the earth, more elaborately the spheres -biospheres, lithosphere, hydrosphere and atmosphere regions of the ecosystem. These biogeochemical cycles, from its terminology and discernable word morphology- involves the biological, geological and chemical components that make out to complete an exact and purposed cycle. The purpose in these cycles are to maintain balance and to ensure the ongoing process of the living and non-living organisms in the environment. These cycles’ help to living organisms survive and thrive. One popular example is the water cycle.