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    <title>TyroCity: Science Notes</title>
    <description>The latest articles on TyroCity by Science Notes (@science-notes).</description>
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      <title>Unicellular Organism</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/unicellular-organism-2c29</link>
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      <title>Metals And Properties Of Metals</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/metals-and-properties-of-metals-4dma</link>
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      <title>Solar System And Motion Of The Earth</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/solar-system-and-motion-of-the-earth-emk</link>
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      <title>Measurement- Mass and Time</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/measurement-mass-and-time-38if</link>
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      <title>Equation Of Motion In Straight Line</title>
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      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/fundamental-and-derived-unit-4p8o</link>
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      <title>Eye</title>
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      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/eye-45l</link>
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      <title>Speed, Acceleration and Velocity</title>
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      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/speed-acceleration-and-velocity-59h1</link>
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      <title>Inorganic Fertilizers And Its Advantages And Disadvantages</title>
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      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/inorganic-fertilizers-and-its-advantages-and-disadvantages-5c2c</link>
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      <title>Skeletal System - Appendicular Skeleton</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
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      <title>Human Blood Circulatory System</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
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      <title>Science IX Video Notes</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/science-ix-video-notes-jm8</link>
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      <description>&lt;p&gt;&lt;strong&gt;1. Measurement&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;1.1 &lt;a href="https://tyrocity.com/science-notes/physical-quantity-and-their-units-24l4"&gt;Physical Quantity And Their Units&lt;/a&gt;&lt;br&gt;
1.2 &lt;a href="https://tyrocity.com/science-notes/length-mass-and-time-and-conversion-of-units-4aic"&gt;Length , Mass And Time And Conversion Of Units&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;2. Force&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;2.1 &lt;a href="https://tyrocity.com/science-notes/newtons-first-and-second-law-of-motion-g28"&gt;Newtons First And Second Law Of Motion&lt;/a&gt;&lt;br&gt;
2.2 &lt;a href="https://tyrocity.com/science-notes/newtons-third-law-of-motion-and-numericals-1mc0"&gt;Newtons Third Law Of Motion And Numericals&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;3. Simple Machine&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;3.1 &lt;a href="https://tyrocity.com/science-notes/machine-adavantage-and-velocity-ratio-206g"&gt;Machine Adavantage And Velocity Ratio&lt;/a&gt;&lt;br&gt;
3.2 &lt;a href="https://tyrocity.com/science-notes/efficiency-and-friction-in-a-machine-and-lever-3340"&gt;Efficiency And Friction In A Machine And Lever&lt;/a&gt;&lt;br&gt;
3.3 &lt;a href="https://tyrocity.com/science-notes/pulley-inclined-plane-wheel-and-axle-5fcl"&gt;Pulley, Inclined Plane, Wheel And Axle&lt;/a&gt;&lt;br&gt;
3.4 &lt;a href="https://tyrocity.com/science-notes/moment-and-numericals-11jm"&gt;Moment And Numericals&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;4. Work, Energy and Power&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;4.1 &lt;a href="https://tyrocity.com/science-notes/work-energy-and-its-types-3d6h"&gt;Work, Energy And Its Types&lt;/a&gt;&lt;br&gt;
4.2 &lt;a href="https://tyrocity.com/science-notes/power-and-transformation-of-energy-1a8i"&gt;Power And Transformation Of Energy&lt;/a&gt;&lt;br&gt;
4.3 &lt;a href="https://tyrocity.com/science-notes/numericals-on-work-energy-and-power-2684"&gt;Numericals On Work Energy And Power&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;5. Light&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;5.1 &lt;a href="https://tyrocity.com/science-notes/refraction-of-light-and-its-laws-1p9j"&gt;Refraction Of Light And Its Laws&lt;/a&gt;&lt;br&gt;
5.2 &lt;a href="https://tyrocity.com/science-notes/effects-of-refraction-of-light-and-total-internal-reflection-2pe9"&gt;Effects Of Refraction Of Light And Total Internal Reflection&lt;/a&gt;&lt;br&gt;
5.3 &lt;a href="https://tyrocity.com/science-notes/dispersion-of-light-electromagnetic-waves-and-its-properties-na2"&gt;Dispersion Of Light , Electromagnetic Waves And Its Properties&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;6. Sound&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;6.1 &lt;a href="https://tyrocity.com/science-notes/sources-and-nature-2b7"&gt;Sources And Nature&lt;/a&gt;&lt;br&gt;
6.2 &lt;a href="https://tyrocity.com/science-notes/wave-velocity-medium-and-spectre-87p"&gt;Wave Velocity, Medium And Spectre&lt;/a&gt;&lt;br&gt;
6.3 &lt;a href="https://tyrocity.com/science-notes/reflection-and-refraction-3c6a"&gt;Reflection And Refraction&lt;/a&gt;&lt;br&gt;
6.4 &lt;a href="https://tyrocity.com/science-notes/intensity-and-pitch-2j45"&gt;Intensity And Pitch&lt;/a&gt;&lt;br&gt;
6.5 &lt;a href="https://tyrocity.com/science-notes/numericals-1918"&gt;Numericals&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;7. Current Electricity and Magnetism&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;7.1 &lt;a href="https://tyrocity.com/science-notes/ohms-law-4k01"&gt;Ohm's Law&lt;/a&gt;&lt;br&gt;
7.2 &lt;a href="https://tyrocity.com/science-notes/resistance-3plh"&gt;Resistance&lt;/a&gt;&lt;br&gt;
7.3 &lt;a href="https://tyrocity.com/dlcvideos/terrestrial-magnetism-3ne8"&gt;Terrestrial Magnetism&lt;/a&gt;&lt;br&gt;
7.4 &lt;a href="https://tyrocity.com/science-notes/magnetic-field-5429"&gt;Current Electricity And Magnetism - Magnetic Field&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;8. Classification of Elements&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;8.1 &lt;a href="https://tyrocity.com/science-notes/atom-atomic-structure-electronic-and-sub-shell-configuration-4i18"&gt;Atom, Atomic Structure, Electronic And Sub-Shell Configuration&lt;/a&gt;&lt;br&gt;
8.2 &lt;a href="https://tyrocity.com/science-notes/valence-electrons-radicle-and-molecular-formula-9ej"&gt;Valence Electrons, Radicle And Molecular Formula&lt;/a&gt;&lt;br&gt;
8.3 &lt;a href="https://tyrocity.com/dlcvideos/chemical-bonds-its-types-and-molecular-weight-35no"&gt;Chemical Bonds, Its Types And Molecular Weight&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;9. Chemical Reaction&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;9.1 &lt;a href="https://tyrocity.com/science-notes/physical-and-chemical-change-chemical-reaction-and-balanced-chemical-equations-2ic4"&gt;Physical And Chemical Change, Chemical Reaction And Balanced Chemical Equations&lt;/a&gt;&lt;br&gt;
9.2 &lt;a href="https://tyrocity.com/science-notes/method-of-balancing-chemical-equation-lbh"&gt;Method Of Balancing Chemical Equation&lt;/a&gt;&lt;br&gt;
9.3 &lt;a href="https://tyrocity.com/dlcvideos/types-of-chemical-reactions-and-catalyst-51ai"&gt;Types Of Chemical Reactions And Catalyst&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;10. Solubility&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;10.1 &lt;a href="https://tyrocity.com/science-notes/solution-and-its-types-dfk"&gt;Solution And Its Types&lt;/a&gt;&lt;br&gt;
10.2 &lt;a href="https://tyrocity.com/science-notes/solubility-curve-and-crystallization-3f6"&gt;Solubility Curve And Crystallization&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;11. Some Gases&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;11.1 &lt;a href="https://tyrocity.com/science-notes/hydrogen-34m6"&gt;Hydrogen&lt;/a&gt;&lt;br&gt;
11.2 &lt;a href="https://tyrocity.com/science-notes/oxygen-3d5"&gt;Oxygen&lt;/a&gt;&lt;br&gt;
11.3 &lt;a href="https://tyrocity.com/science-notes/nitrogen-50ag"&gt;Nitrogen&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;12. Metals&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;12.1 &lt;a href="https://tyrocity.com/science-notes/metals-and-properties-of-metals-4dma"&gt;Metals And Properties Of Metals&lt;/a&gt;&lt;br&gt;
12.2 &lt;a href="https://tyrocity.com/science-notes/differences-between-metals-and-non-metals-role-of-metals-in-organisms-2fi9"&gt;Differences Between Metals And Non-Metals, Role Of Metals In Organisms&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;13. Carbon and Its Compounds&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;13.1 &lt;a href="https://tyrocity.com/science-notes/nature-and-sources-of-carbon-fll"&gt;Nature And Sources Of Carbon&lt;/a&gt;&lt;br&gt;
13.2 &lt;a href="https://tyrocity.com/science-notes/physical-and-chemical-properties-of-carbon-3eam"&gt;Physical And Chemical Properties Of Carbon&lt;/a&gt;&lt;br&gt;
13.3 &lt;a href="https://tyrocity.com/science-notes/organic-and-inorganic-compounds-593f"&gt;Organic And Inorganic Compounds&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;14. Water&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;14.1 &lt;a href="https://tyrocity.com/science-notes/sources-of-water-and-properties-of-water-9fi"&gt;Sources Of Water And Properties Of Water&lt;/a&gt;&lt;br&gt;
14.2 &lt;a href="https://tyrocity.com/science-notes/uses-and-types-of-water-process-of-removal-of-hardness-of-water-2hbl"&gt;Uses And Types Of Water, Process Of Removal Of Hardness Of Water&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;15. Chemical Fertilizer Used In Agriculture&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;15.1 &lt;a href="https://tyrocity.com/science-notes/differences-between-organic-and-inorganic-fertilizers-o0o"&gt;Differences Between Organic And Inorganic Fertilizers&lt;/a&gt;&lt;br&gt;
15.2 &lt;a href="https://tyrocity.com/science-notes/fertilizers-and-its-types-pbe"&gt;Fertilizers And Its Types&lt;/a&gt;&lt;br&gt;
15.3 &lt;a href="https://tyrocity.com/science-notes/inorganic-fertilizers-and-its-advantages-and-disadvantages-5c2c"&gt;Inorganic Fertilizers And Its Advantages And Disadvantages&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;16. Classification Of Plants And Animals&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;16.1 &lt;a href="https://tyrocity.com/science-notes/introduction-4c4m"&gt;Introduction&lt;/a&gt;&lt;br&gt;
16.2 &lt;a href="https://tyrocity.com/science-notes/invertebrates-1n5e"&gt;Invertebrates&lt;/a&gt;&lt;br&gt;
16.3 &lt;a href="https://tyrocity.com/science-notes/vertebrates-5c53"&gt;Vertebrates&lt;/a&gt;&lt;br&gt;
16.4 &lt;a href="https://tyrocity.com/science-notes/mosquito-2f5n"&gt;Mosquito&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;17. Adaption Of Organism&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;17.1 &lt;a href="https://tyrocity.com/science-notes/terrestrial-and-aquatic-adaption-4a44"&gt;Terrestrial And Aquatic Adaption&lt;/a&gt;&lt;br&gt;
17.2 &lt;a href="https://tyrocity.com/science-notes/bacteria-2beo"&gt;Bacteria&lt;/a&gt;&lt;br&gt;
17.3 &lt;a href="https://tyrocity.com/science-notes/virus-h5"&gt;Virus&lt;/a&gt;&lt;br&gt;
17.4 &lt;a href="https://tyrocity.com/science-notes/fungi-and-protozoa-3h9j"&gt;Fungi And Protozoa&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;18. System&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;18.1 &lt;a href="https://tyrocity.com/science-notes/system-plant-tissue-meristematic-tissue-398h"&gt;System - Plant Tissue - Meristematic Tissue&lt;/a&gt;&lt;br&gt;
18.2 &lt;a href="https://tyrocity.com/science-notes/system-plant-tissue-simple-permanent-tissue-1b89"&gt;System - Plant Tissue - Simple Permanent Tissue&lt;/a&gt;&lt;br&gt;
18.3 &lt;a href="https://tyrocity.com/science-notes/system-plant-tissue-complex-and-special-permanent-tissues-5673"&gt;System - Plant Tissue - Complex And Special Permanent Tissues&lt;/a&gt;&lt;br&gt;
18.4 &lt;a href="https://tyrocity.com/science-notes/skeletal-system-structure-of-bones-types-of-bones-and-its-functions-3fae"&gt;Skeletal System - Structure Of Bones, Types Of Bones And Its Functions&lt;/a&gt;&lt;br&gt;
18.5 &lt;a href="https://tyrocity.com/science-notes/skeletal-system-axial-skeleton-and-skull-130p"&gt;Skeletal System - Axial Skeleton And Skull&lt;/a&gt;&lt;br&gt;
18.6 &lt;a href="https://tyrocity.com/science-notes/skeletal-system-axial-skeleton-vertebral-column-and-thoracic-cage-k85"&gt;Skeletal System - Axial Skeleton - Vertebral Column And Thoracic Cage&lt;/a&gt;&lt;br&gt;
18.7 &lt;a href="https://tyrocity.com/science-notes/skeletal-system-appendicular-skeleton-1pe8"&gt;Skeletal System - Appendicular Skeleton&lt;/a&gt;&lt;br&gt;
18.8 &lt;a href="https://tyrocity.com/science-notes/system-digestive-system-4fjg"&gt;System - Digestive System&lt;/a&gt;&lt;br&gt;
18.9 &lt;a href="https://tyrocity.com/science-notes/system-respiratory-system-536a"&gt;System - Respiratory System&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;19. Senses Organs&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;19.1 &lt;a href="https://tyrocity.com/science-notes/eye-45l"&gt;Eye&lt;/a&gt;&lt;br&gt;
19.2 &lt;a href="https://tyrocity.com/science-notes/nose-3d5h"&gt;Nose&lt;/a&gt;&lt;br&gt;
19.3 &lt;a href="https://tyrocity.com/dlcvideos/ear-4ode"&gt;Ear&lt;/a&gt;&lt;br&gt;
19.4 &lt;a href="https://tyrocity.com/science-notes/tongue-1mm1"&gt;Tongue&lt;/a&gt;&lt;br&gt;
19.5 &lt;a href="https://tyrocity.com/science-notes/skin-2afd"&gt;Skin&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;20. Evolution&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;20.1 &lt;a href="https://tyrocity.com/science-notes/organic-evolution-homologous-and-analogous-organs-200l"&gt;Organic Evolution, Homologous And Analogous Organs&lt;/a&gt;&lt;br&gt;
20.2 &lt;a href="https://tyrocity.com/science-notes/evidences-supporting-evolution-3n4c"&gt;Evidences Supporting Evolution&lt;/a&gt;&lt;br&gt;
20.3 &lt;a href="https://tyrocity.com/science-notes/lamarkism-and-its-criticism-2ef0"&gt;Lamarkism And Its Criticism&lt;/a&gt;&lt;br&gt;
20.4 &lt;a href="https://tyrocity.com/science-notes/darwanism-and-its-criticism-pof"&gt;Darwanism And Its Criticism&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;21. Nature And Environment&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;21.1 &lt;a href="https://tyrocity.com/science-notes/biotic-and-abiotic-factors-3jh7"&gt;Biotic And Abiotic Factors&lt;/a&gt;&lt;br&gt;
21.2 &lt;a href="https://tyrocity.com/science-notes/ecosystems-2279"&gt;Ecosystems&lt;/a&gt;&lt;br&gt;
21.3 &lt;a href="https://tyrocity.com/science-notes/food-chain-food-web-and-ecosystem-services-923"&gt;Food Chain, Food Web And Ecosystem Services&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;22. Natural Hazard&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;22.1 &lt;a href="https://tyrocity.com/science-notes/disaster-management-and-its-cycle-5aag"&gt;Disaster Management And Its Cycle&lt;/a&gt;&lt;br&gt;
22.2 &lt;a href="https://tyrocity.com/science-notes/glacier-flood-glacier-lake-outbrust-and-cyclone-17d8"&gt;Glacier Flood, Glacier Lake Outbrust And Cyclone&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;23. Green House&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;23.1 &lt;a href="https://tyrocity.com/science-notes/green-house-effect-and-artificial-green-house-3988"&gt;Green House Effect And Artificial Green House&lt;/a&gt;&lt;br&gt;
23.2 &lt;a href="https://tyrocity.com/science-notes/climate-change-2gak"&gt;Climate Change&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;24. The Earth In The Universe&lt;/strong&gt;&lt;/p&gt;

&lt;p&gt;24.1 &lt;a href="https://tyrocity.com/science-notes/units-used-in-astronomy-26kk"&gt;Units Used In Astronomy&lt;/a&gt;&lt;br&gt;
24.2 &lt;a href="https://tyrocity.com/science-notes/solar-system-and-motion-of-the-earth-emk"&gt;Solar System And Motion Of The Earth&lt;/a&gt;&lt;br&gt;
24.3 &lt;a href="https://tyrocity.com/science-notes/phases-of-the-moon-k8c"&gt;Phases Of The Moon&lt;/a&gt;&lt;br&gt;
24.4 &lt;a href="https://tyrocity.com/science-notes/shadow-and-lunar-eclipse-45p3"&gt;Shadow And Lunar Eclipse&lt;/a&gt;&lt;br&gt;
24.5 &lt;a href="https://tyrocity.com/science-notes/solar-eclipse-44bj"&gt;Solar Eclipse&lt;/a&gt;&lt;/p&gt;

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      <category>sciencenotes</category>
      <category>grade9</category>
    </item>
    <item>
      <title>Sound – Sound and Wave</title>
      <dc:creator>DLC Videos</dc:creator>
      <pubDate>Sat, 14 Mar 2015 02:41:58 +0000</pubDate>
      <link>https://tyrocity.com/science-notes/sound-sound-and-wave-em1</link>
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&lt;/iframe&gt;
&lt;/p&gt;

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      <category>grade7</category>
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