Heat and matter
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Materials such as silver, copper, and gold are good conductors of heat, while glass, rubber, and paper are poor conductors or insulators. Conductors transfer heat through direct contact, while insulators prevent heat transfer. Insulators are used in applications like pot holders, house construction, and insulation to reduce heat transfer. The three main methods of heat transfer are conduction, convection, and radiation.
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Changes in Matter
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Abbreviations are shortened forms of words that often use periods after the letters. Common abbreviations include days of the week like Sun. and months of the year such as Dec. Titles and names can also be abbreviated, for example Prof. for Professor and Ms. for Miss.
syllables-fun-activities-games_55019.pptx
This document discusses how to count syllables in words. A syllable is a single unit of sound within a word. Words can have different numbers of syllables, such as "tie" having one syllable and "alphabet" having three syllables. The document recommends clapping out the syllables in words to count them, such as clapping three times for "umbrella" and five times for "I like to eat cheese." Counting syllables helps determine the rhythm or "beats" in words.
13534.ppt
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- The radius is the line connecting the center of the circle to the circumference. A chord is a line touching the circumference at two points.
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Natural Objects in the Sky.pptx
Daytime objects in the sky include the sun, which Earth revolves around, clouds which are important for weather, and rainbows which are formed when sunlight hits raindrops and splits into colors. Nighttime objects are the moon, which orbits Earth, stars which are bright balls of gas that give their own light, and planets.
Musical Form.pptx
Musical form refers to the structure or organization of a musical composition. There are several common forms, including binary form consisting of two contrasting sections (AB), ternary form with three sections (ABA) where the first and third sections are the same, and rondo form with a recurring theme or refrain alternating with different episodes (ABACA). The form helps composers organize their pieces and involves different melodic phrases, sections, and the repetition or contrast of musical ideas.
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The document provides information about arithmetic sequences including defining the first term (a), common difference (d), and the explicit formula to find any term (an) in an arithmetic sequence. It gives examples of finding specific terms and writing recursive and explicit rules for arithmetic sequences.
syllables-fun-activities-games_55019.pptx
This document discusses how to count syllables in words. A syllable is a single unit of sound within a word. Words can have different numbers of syllables, such as "tie" having one syllable and "alphabet" having three syllables. The document recommends clapping out the syllables in words to count them, such as clapping three times for "umbrella" and five times for "I like to eat cheese." Counting syllables is done by hearing the separate sounds or "beats" in each word, rather than individual letters or sounds.
Euphemism.pptx
Euphemism is a polite expression used in place of a rude, harsh, or embarrassing statement to avoid offending or humiliating someone. Euphemisms are made up of three Greek morphemes meaning "good voice act/result" and are used to soften expressions like "died" to "passed away" or describe someone as attending "remedial classes" rather than being "corrective". Common euphemisms include replacing "garbage man" with "sanitation engineer", calling the elderly "senior citizens" rather than "old people", and referring to pregnancy as being "in the family way".
Congruent Figures.pptx
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Safety Measures for Different Weather Conditions.pptx
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Becoming Compassionate.pptx
This document discusses how to become compassionate by showing empathy and helping those who are suffering through acts of mercy, such as feeding the hungry, sheltering the homeless, and visiting the sick. It encourages showing compassion when encountering victims of calamity by giving comfort and aid. Several examples are provided of compassionate acts like donating to charities, volunteering, and caring for family members.
force, motion, and energy.pptx
Force can cause changes in the motion, shape, and size of objects. It can make stationary objects begin moving, slow or accelerate moving objects, and change the direction of moving objects. Friction is a type of force that occurs when two surfaces rub against each other. Applying more force to an object generally causes greater changes, such as compressing an object more if a stronger force is exerted.
Nets of Solid Figures.pptx
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
affixes-clt-communicative-language-teaching-resources-read_49190.ppt
This document discusses affixes, including prefixes and suffixes. It provides examples of common prefixes like anti-, de-, dis-, en-, and in- and their meanings. Some common suffixes are -able, -al, -ed, -en, -er, -est, -ful, -ic, -ing, -(t)ion, -(i)ty, -(t)ive, and -ly. Affixes are added to root words to modify or change their meaning. Knowing common prefixes and suffixes can help the reader understand new words and sounds more educated.
assonance_and_consonance_01.pptx
This document defines and provides examples of consonance, assonance, and alliteration. Consonance is the repetition of consonant sounds anywhere in a word. Assonance is the repetition of vowel sounds anywhere in a word. Alliteration is the repetition of any sounds at the beginning of words. The document compares and contrasts these three literary devices used to repeat sounds in language.
Geometry, Patterns, and Algebra.pptx
Polygons are plane figures formed by three or more line segments called sides that meet at points called vertices. A regular polygon has all interior angles that are congruent, while an irregular polygon does not have congruent interior angles. Regular polygons include triangles, squares, pentagons and other figures with five or more sides where all interior angles are equal.
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Heat and matter
- 4. Conductors of Heat Conductors – Materials that allow heat to transfer upon direct contact with each other. silve r coppe r gold
- 5. steel iron bras s bronz e mercury graphite concret e
- 6. Insulators – Materials that are poor conductors of heat. glass rubber transformer oil porcelai n ceramic cotton
- 7. paper wood water plastic air
- 8. Uses of Conductors and Insulators – Pot holders are made of materials such as fabric and silicon, they can safely hold pots that are in contact with the heat source. – Houses made of glass and wood are cool even without air conditioning. – Nipa, is an insulating material that makes the interior of the house comfortable even at the peak of a hot day. – Insulating foam or plastic is used to houses made of cement and metal roofing to release excess heat and prevent outside heat to get in.
- 9. Methods of Heat Transfer • Conduction – happens when something hot touches something cooler, causing heat from the hotter object to travel to the cooler object. Example:
- 10. • Convection – occurs when heat is transferred through a gas or liquid as the hotter material moves to a cooler area. – the reason that water moves around so much as it’s boiling. As the water at the bottom of the pot becomes hot, it rises to the top, with cooler water moving down to replace it. Example:
- 11. • Radiation – is when heat travels through the air in invisible waves. – Heat transferred through radiation is called “radiant heat” Example:
- 12. Properties of Objects that Affects Radiant Heat Dark-colored objects absorb radiant heat better than colored ones. They are also good emitters of heat. Light-colored, shiny objects reflect most of the heat, making them good reflectors of radiant heat.