Notes, abstracts, papers, exams and problems of Secondary education

Q#6.3: Define (i) Crystal lattice (ii) Unit Cell.

Ans.(i) Crystal Lattice.

A particular three-dimensional arrangement of particles (atoms, ions, molecules) in a crystal is called a crystal lattice.

In a crystal lattice, particles are located at definite positions in space. These positions are represented by points in a crystal and are called lattice points or lattice sites. This arrangement is called a crystal lattice or space lattice. A crystal lattice actually shows the shape of a crystal.

(ii) Unit Cell.

The smallest geometrical portion of the crystal which is used to build up the whole crystal. OR

If is the smallest portion of a crystal lattice which includes all the positions of each type of particle in the crystal. For example, a cubic crystal... Continue reading "Crystal Lattice and Unit Cell" »

substitution:

nominal: one`s

verbal: do/does/doesn't/don't

clausal: so

ellipsis

nominal: both (kids)

verbal: have you… yes, I have.

clausal: is he? He didn't tell me

Conjunction (cohesion device)

Adversative: however, on the other hand

Additive: and

Temporal: first, then

Causal: because(reason)

lexical cohesion

reiteration: repetition, synonym, superordinate (illness,pneumonia), general word 

reference

anaphoric (before) 

“this” (ideas/facts) demonstrative

“that” (objects/people) personal

“these/those” (comparative)

Modal certainty: will, must, be bound to

Assumption or prediction: will

Logical necessity: must

Probability or ‘reasonable inference’: should, ought

Extrinsic possibility: may, might, could

Summary of extrinsic modal

He will be there by now. (assumption/prediction based on experience or common sense)

I shall probably be back before you (prediction)

He must be there by now. (logical necessity, deduction based on evidence)

He can’t be there yet. (logical necessity negated)

He’s bound to be there. (modal certainty + inevitability)

He has to be there by now. (logical necessity, objective)

He’s likely to be there by now. (probability)

He should be there by now. (reasonable inference based on deduction)

He could be there by now. (tentative possibility)... Continue reading "Modal Certainty, Probability, and Obligation: Understanding Modal Verbs" »

Term to describe the trends in thought and letters in Europe and the American colonies during the 18th century before the French Revolution. The phrase was employed by writers of the period, and convinced they were emerging from centuries of darkness and ignorance into an age enlightened by reason, etc.

During Enlightenment

• People know that through reason and progress, it will be possible to progress in knowledge, in technical achievements, and moral values.

Attempt to Supplant Aristocracy and Established Churches

• Enlightenment thinkers aimed to supplant aristocracy and established churches in social and political life, which they viewed as reactionary, oppressive, and superstitious.

Most Enlightenment Thinkers

• Most Enlightenment thinkers didn't

Ethical Principles in Research

The Belmont Report

The Belmont Report summarizes ethical principles and guidelines for research involving human subjects. Three core principles are identified: respect for persons, beneficence, and justice. Three primary areas of application are also stated: informed consent, assessment of risks and benefits, and selection of subjects.

Animal Welfare Act

The Animal Welfare Act requires that minimum standards of care and treatment be provided for certain animals bred for commercial sale, used in research, transported commercially, or exhibited to the public.

Respect for Persons

Respect for persons involves protecting the autonomy of all people, treating them with courtesy and respect, and allowing for informed consent.... Continue reading "Ethical Research: Principles, Practices, and Measurement" »

Contradiction

The reading and the lecture are both about ______. Whereas the author of the reading states that _______, the lecturer suggests that ________. The lecturer casts doubt on the main points made in the reading by providing two/three reasons.

First of all, according to the reading, _____________ .However, the lecturer disputes this point. He/She says that _________. Furthermore, he/she mentions that __________

Secondly, the reading states that _______. Nevertheless, the lecturer refutes this argument. He/She argues that __________. In addition, he/she points out ________.

Finally, the reading claims that _________. On the other hand, the lecturer believe that _____. He/She thinks that _______. Moreover, he/she feels that ________

In conclusion,... Continue reading "Contradiction Between Reading and Lecture on ________" »

Sedimentary Rocks

Sedimentary rocks are produced from the weathering of preexisting rocks or biological matter.

• Detrital: Rocks produced from rock fragments.
• Chemical: Rocks produced by the precipitation of dissolved ions in water.
• Organic: Rocks produced by the accumulation of biological debris.

Sediments: Loose, solid particles originating from the weathering and erosion of preexisting rocks.

Deposition: The settling and coming to rest of transported materials and the accumulation of chemical or organic sediments, typically in water.

Lithification: The general term for processes converting loose sediments into sedimentary rock.

• Breccia: Coarse-grained clastic sedimentary rocks.
• Sandstone: Medium-grained clastic sedimentary rock.
• Shale: Fine-grained

Dear Finny:

I´m writing to you to apologize. Sorry for being such A bad friend, I was very immature and a very jealous person. I always wanted to Be as talented as you are playing Blitzball,and I Took it as if it were a competition. But then I realized that a good Person gets glad about the achievement that their best friend obtains. I also Wanted to ask for forgiveness for making you fall from the tree, I regret it Truly. I wish we could go back to the old times when we created the “super Suicide society of the summer session”, we had a lot of fun, I really miss That. Well, I would like you to forgive me, I will try to visit you at the Hospital and I hope you get well soon  

   Sincerely

Gene

Part One. This Hard Land

In the first part of the book, De León discusses the steps that were taken to result in the system, 'Prevention Through Deterrence,' that is in place today to prevent migrants from coming into America. He also expands upon the ideas of the hybrid collectif and 'Prevention Through Deterrence' by arguing that the United States deliberately funnels migrants through the Sonoran Desert so that various human and nonhuman actants do the 'brutal work' for Border Patrol. He also uses the phrase bare life to describe those that have died and their death means nothing. This phrase is used to describe many migrants who lost their lives while attempting to cross. De León notes how there are very few posters set up in Mexico that... Continue reading "Unveiling the Truth: Migrant Journeys and Border Realities" »