1. Study the pictures below. In each case‚ write whether it is potential energy or kinetic energy. A B C D E F [Score:3; 0.5 each] ANSWER: A. kinetic or potential energy D. kinetic energy B. potential energy E. kinetic or potential energy C. kinetic or potential energy F. potential energy 1 of 13 2. Beginning from largest to smallest‚ arrange the following levels of biological organization: population‚ biosphere‚ cell‚ biomolecule
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Concepts of Radiation Radiation * Emission of energy from an atom and the transmission of this energy through space. * Energy propagated in a material medium or space. * Energy in transit. What are the types of radiation? * Radiation is of two general types in our environment. * They are called non-ionizing and ionizing. Ionization * the energy transferred to the electrons causes them to be pulled away or removed from an atom entirely. * The result is the
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Chapter 1 Cell Theory- in the 18th century‚ two scientists came up with the cell theory. Schleiden and Schwen. 3 corollaries of the cell theory: -all cells are alike in chemical composition -all cells store and process information in the same way -all cells arise from other cell through cell division 5 types of different Microscopes 1. Light Microscope- produces 2-D image Direct descendants of Hooks scope> take two lenses to a light source> used this to magnify images up to 1‚000 fold.
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Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light‚ sound and water waves. The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Mirrors exhibit specular reflection. In acoustics‚ reflection causes echoes and is used in sonar. In geology
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|Atoms and Molecules | |Everyday Science | | An atom is the smallest "piece" of an element that still has the properties of that element. A molecule is a combination of two or more | |atoms bonded together.
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Outlining General Relativity and Space Time Curvature In the real world‚ smooth‚ uniform motion is more an exception than a rule. Technically‚ any change in speed or direction is called acceleration (or deceleration)‚ which can thus mean slowing down as well as speeding up‚ or simply a redirection. Ordinarily‚ an observer in an accelerating frame of reference can perceive its motion. Passengers in a car‚ for example‚ fell themselves pressed backward if the car starts suddenly from a dead stop
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manufacture of borosilicate glasses. Pyrex glass is tough and heat resistant because of the boric acid used to make it. The isotope boron 10 is used as a control for nuclear reactors‚ as a shield for nuclear radiation‚ and in instruments used for detecting neutrons. Demand is increasing for boron filaments‚ a high-strength‚ low-density material chiefly employed for advanced aerospace structures. Silicon- Silicon is one of the most useful elements to mankind. Sand and clay‚ which both contain silicon‚ are used
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Chapter One – The human Body: An Orientation (we will assume that the subject is a healthy 22 year old female 125lbs or male 155lbs. I. Define and contrast anatomy and physiology: Anatomy provides is a static image of the body’s architecture vs. Physiology which reveals the body’s dynamic and animated workings. a. Anatomy: (derived from the Greek words “to cut apart”) is the study of the structures of the body parts and their relationship to one another. The essential tools for studying anatomy
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“This is a man’s world‚ but it wouldn’t be nothing without a woman” (Brown). This iconic song from James Brown is especially true in the field of astronomy as Jocelyn Bell is one of the very few women within its field accredited for making a significant contribution to its study. On top of this there are not too many contributions being made to astronomy in the 21st century‚ however‚ Jocelyn Bell is one of a select few who have made a modern day contribution to the field. Jocelyn Bell discovered
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there has been renewed interest by experts in using thorium as a nuclear fuel in place of uranium to create nuclear power. Thorium‚ as well as uranium and plutonium‚ can be used as fuel in a nuclear reactor. Here’s how it works. When Th232 absorbs a neutron it becomes Th233‚ which is unstable and decays into protactinium-233 and then into U233. That’s the same uranium isotope we use in reactors now as a nuclear fuel‚ the one that is fissile all on its own. Thankfully‚ it is also relatively long lived
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