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Eddi Din [679]
3 years ago
12

Dr. Piro knesis stages a fire drill at the elementary school in order to study how children respond to potential emergency situa

tions. Dr. Knesis's method would best be described as a(n)
Social Studies
1 answer:
kenny6666 [7]3 years ago
6 0

Dr. Knesis's method would best be described as a <u>"structured observation".</u>


Structured observation is an information gathering strategy in which analysts accumulate information without coordinate contribution with the members (the scientists watch from a far distance) and the gathering method is organized in a very much characterized and procedural way. It enables scientists to gather information that couldn't be gathered utilizing ordinary research techniques like reviews and meetings. Structured observation utilizes a coding technique for information accumulation.

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In each state ,a _____ lists the qualifications for governer
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Keith_Richards [23]

Answer and Explanation:

  • Pure substances are basically chemical substances with distinct composition and properties that are constant. They may consist of one atom, molecule or compound that cannot be easily separated by physical separation technique. <em>Examples of pure substances are iron, water, gold etc. </em>
  • Mixtures are made up of two or more substances that are not chemically combined together, in which each substance that make up the mixture still retains their chemical identity, and can separated by physical method. <em>Examples of mixtures are brass made up of different metals, salt water, milk etc. </em>
  • Elements are pure chemical substances that are made up of a single type of atom which cannot be easily broken down. <em>For example, hydrogen, oxygen, iron. </em>
  • Compounds are made up of two more different elements that are chemically bonded together by chemical bonds. <em>Examples include NaCl or salt, which is made up of Na and Cl; Water which is made up of Hydrogen and Oxygen </em>
  • Homogenous mixture contains substances of uniform composition, <em>e.g, air which consists of mixture of gases; a mixture of salt and water; milk etc. </em> Heterogenous mixture, on the other hand contains substances whose distribution are not uniform, i.e. non-uniform. <em>Examples are a mixture of sand and water; water and oil etc. </em>
  • Physical change is a type of change that involves the change of form of a matter without the chemical properties being altered. This is a reversible change. On the other hand, a chemical change is an irreversible change in which the chemical properties of a matter are changed.
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8 0
4 years ago
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Political changes are when the rulers in a country lose power or type of governance.

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Not sure if I'm 100% correct, but I hope it helps :)

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