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Class 7th NCERT- Science -Chapter -1-18

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Subject : Science

Chapter 1: Nutrition in Plants

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1- [video_lightbox_youtube video_id="Vj_78w92JfY&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="EXIDajagxDs&rel=0" width="640" height="520" start="10" anchor="Cells in Living Organism"]

3- [video_lightbox_youtube video_id="-QXsCyEZ4T8&rel=0" width="640" height="520" start="10" anchor="How Nutrients Are Replenished In The Soil?"]

4- [video_lightbox_youtube video_id="BNaAmi4_8Dc&rel=0" width="640" height="520" start="10" anchor="Mode of Nutrition in Plants"]

5- [video_lightbox_youtube video_id="R60bpHM4FR8&rel=0" width="640" height="520" start="10" anchor="Mode of Nutrition in Plants (Part 2)"]

6- [video_lightbox_youtube video_id="FYnA52BSfLQ&rel=0" width="640" height="520" start="10" anchor="How Do Plants Prepare Their Food?"]

7- [video_lightbox_youtube video_id="F9qUsJJQCUU&rel=0" width="640" height="520" start="10" anchor="Q1 & Q2 : Nutrition in Plants"]

8- [video_lightbox_youtube video_id="ey83hHTEMT4&rel=0" width="640" height="520" start="10" anchor="Q3 & Q4 : Nutrition in Plants"]

9- [video_lightbox_youtube video_id="JLa9S_V2eSE&rel=0" width="640" height="520" start="10" anchor="Q 6 & Q 7 : Chapter 1"]

10- [video_lightbox_youtube video_id="uBEBYEEk2Hk&rel=0" width="640" height="520" start="10" anchor="Q 8 & Q 9 : Chapter 1"]

11- [video_lightbox_youtube video_id="CjlEKtUnCx8&rel=0" width="640" height="520" start="10" anchor="Q 10, Q11 & Q 12 : Chapter 1"]

Chapter 2 : Nutrition in Animals

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1- [video_lightbox_youtube video_id="y_dK9lUVVbI&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="MdSjoKB9IbU&rel=0" width="640" height="520" start="10" anchor="Mouth and Buccal Cavity"]

3- [video_lightbox_youtube video_id="Lzu5PffUNSQ&rel=0" width="640" height="520" start="10" anchor="Different Types of Teeth"]

4- [video_lightbox_youtube video_id="wHpiWH6jW_c&rel=0" width="640" height="520" start="10" anchor="Feeding and Digestion in Amoeba"]

5- [video_lightbox_youtube video_id="e3FahyXIcQk&rel=0" width="640" height="520" start="10" anchor="Digestion in Grass Eating Animals"]

6- [video_lightbox_youtube video_id="VntaoY0RA4o&rel=0" width="640" height="520" start="10" anchor="Q 1 & Q 2 :- Chapter 2"]

7- [video_lightbox_youtube video_id="DRIb-P4OzJk&rel=0" width="640" height="520" start="10" anchor="Q 3 & Q 4 :- Chapter 2"]

8- [video_lightbox_youtube video_id="eAZD876QTrE&rel=0" width="640" height="520" start="10" anchor="Q 5 & Q 6 :- Chapter 2"]

9- [video_lightbox_youtube video_id="IwEGJcuKGEU&rel=0" width="640" height="520" start="10" anchor="Q 7 & Q 8 :- Chapter 2"]

10- [video_lightbox_youtube video_id="g1kP9L0CsVk&rel=0" width="640" height="520" start="10" anchor="Q 9 & Q 10 :- Chapter 2"]

11- [video_lightbox_youtube video_id="UHb-aQViJm0&rel=0" width="640" height="520" start="10" anchor="Q 11 & Q 12 :- Chapter 2"]

Chapter 3 : Fiber to Fabric

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1- [video_lightbox_youtube video_id="yukGZMUdBQ8&rel=0" width="640" height="520" start="10" anchor="Fibers into Wool"]

2- [video_lightbox_youtube video_id="iqskOYmsnl4&rel=0" width="640" height="520" start="10" anchor="Type of Fibers"]

3- [video_lightbox_youtube video_id="r2nSecpJPmM&rel=0" width="640" height="520" start="10" anchor="Wool Fiber "]

4- [video_lightbox_youtube video_id="rQ3z8Bq7TMM&rel=0" width="640" height="520" start="10" anchor="Silk"]

5- [video_lightbox_youtube video_id="n22e-rFJTnY&rel=0" width="640" height="520" start="10" anchor="Process of Obtaining Silk from Silkworm"]

6- [video_lightbox_youtube video_id="LSETmtNc2IA&rel=0" width="640" height="520" start="10" anchor="Q 1"]

7- [video_lightbox_youtube video_id="odHMGJ72alI&rel=0" width="640" height="520" start="10" anchor="Q 2, Q 3 & Q 4"]

8- [video_lightbox_youtube video_id="BnyupErp3R0&rel=0" width="640" height="520" start="10" anchor="Q 7, Q 8 & Q 9"]

Chapter 4 : Heat

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1- [video_lightbox_youtube video_id="QZhAh1kKsfs&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="Fd3aQFhJqpE&rel=0" width="640" height="520" start="10" anchor="Transfer Of Heat"]

3- [video_lightbox_youtube video_id="pua7dT4FLc4&rel=0" width="640" height="520" start="10" anchor="Convection"]

4- [video_lightbox_youtube video_id="THVInlkFPOs&rel=0" width="640" height="520" start="10" anchor="Sea Breeze & Land Breeze"]

5- [video_lightbox_youtube video_id="Wb455v-bgNQ&rel=0" width="640" height="520" start="10" anchor="Clothes For Winters And Summers"]

6- [video_lightbox_youtube video_id="zK27z8wqWc8&rel=0" width="640" height="520" start="10" anchor="Exercise Q1"]

7- [video_lightbox_youtube video_id="HtMP0N2tONM&rel=0" width="640" height="520" start="10" anchor="Exercise Q2,Q3"]

8- [video_lightbox_youtube video_id="8ctdYTRQxXM&rel=0" width="640" height="520" start="10" anchor="Exercise Q4,Q5"]

9- [video_lightbox_youtube video_id="8_8kHLAcRSw&rel=0" width="640" height="520" start="10" anchor="Exercise Q7,Q8"]

10- [video_lightbox_youtube video_id="PUQIS-RzTxs&rel=0" width="640" height="520" start="10" anchor="Exercise Q9,Q10"]

11- [video_lightbox_youtube video_id="uJbhgdRuR28&rel=0" width="640" height="520" start="10" anchor="Exercise Q11"]

Chapter 5 : Acids, Bases and Salts

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1- [video_lightbox_youtube video_id="QDdRGnHkOO&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="M1tshoxGG8s&rel=0" width="640" height="520" start="10" anchor="Neutralization"]

3- [video_lightbox_youtube video_id="pasXM5qKxJc&rel=0" width="640" height="520" start="10" anchor="Neutralization in Everyday Life"]

4- [video_lightbox_youtube video_id="o-fyBAOvcpQ&rel=0" width="640" height="520" start="10" anchor="Exercise Q1,Q2,Q3"]

5- [video_lightbox_youtube video_id="i4u3a4wSfOk&rel=0" width="640" height="520" start="10" anchor="Exercise Q4, Q5"]

6- [video_lightbox_youtube video_id="Jg7Rw5avkcE&rel=0" width="640" height="520" start="10" anchor="Exercise Q6,Q7,Q8,Q9"]

7- [video_lightbox_youtube video_id="VZYCYzf6d2s&rel=0" width="640" height="520" start="10" anchor="Exercise Q10"]

8- [video_lightbox_youtube video_id="XrY14dCrj9g&rel=0" width="640" height="520" start="10" anchor="Exercise Q11"]

Chapter 6 : Physical and Chemical Changes

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1- [video_lightbox_youtube video_id="jPY4l5WVbw4&rel=0" width="640" height="520" start="10" anchor="Inroduction"]

2- [video_lightbox_youtube video_id="1zl77tQomAs&rel=0" width="640" height="520" start="10" anchor="Radiation or Absorption of Heat, Production of Sound"]

3- [video_lightbox_youtube video_id="rJXCc_Jsu_M&rel=0" width="640" height="520" start="10" anchor="Rusting Of Iron & Prevention"]

4- [video_lightbox_youtube video_id="QGCD8K2jEDI&rel=0" width="640" height="520" start="10" anchor="Examples"]

5- [video_lightbox_youtube video_id="pLON11IYCDo&rel=0" width="640" height="520" start="10" anchor="ExerciseQ1,Q2,Q3"]

6- [video_lightbox_youtube video_id="PxRTxivlbmw&rel=0" width="640" height="520" start="10" anchor="ExerciseQ4,Q5"]

7- [video_lightbox_youtube video_id="GxngKyMuso0&rel=0" width="640" height="520" start="10" anchor="ExerciseQ6,Q7"]

8- [video_lightbox_youtube video_id="_3c9SmuabkQ&rel=0" width="640" height="520" start="10" anchor="ExerciseQ8"]

9- [video_lightbox_youtube video_id="-ZS9bFj3fWY&rel=0" width="640" height="520" start="10" anchor="ExerciseQ9,Q10"]

10- [video_lightbox_youtube video_id="AcqFMH5Lzos&rel=0" width="640" height="520" start="10" anchor="ExerciseQ11"]

11- [video_lightbox_youtube video_id="GbVQhgm11jw&rel=0" width="640" height="520" start="10" anchor="ExerciseQ12"]

Chapter 7 : Weather, Climate and Adaptations of Animals to Climate

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1- [video_lightbox_youtube video_id="Ckjr7Bl9ASE&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="x6hc2rM_8yM&rel=0" width="640" height="520" start="10" anchor="How Do Changes in Weather Occur"]

3- [video_lightbox_youtube video_id="XY6MLkzYCIw&rel=0" width="640" height="520" start="10" anchor="Climate & Adaptations"]

4- [video_lightbox_youtube video_id="UKa-eIxJ0_U&rel=0" width="640" height="520" start="10" anchor="Polar Region "]

5- [video_lightbox_youtube video_id="wvN184wbvdc&rel=0" width="640" height="520" start="10" anchor="CLIMATE"]

6- [video_lightbox_youtube video_id="DRe6kGUANUE&rel=0" width="640" height="520" start="10" anchor="Tropical Rainforest"]

7- [video_lightbox_youtube video_id="kRdyn-lZceA&rel=0" width="640" height="520" start="10" anchor="Why Days Are Shorter in Winter Seasons"]

8- [video_lightbox_youtube video_id="j80gvnXqPAo&rel=0" width="640" height="520" start="10" anchor="Exercise Q1, Q2"]

9- [video_lightbox_youtube video_id="Amzyq36JFmY&rel=0" width="640" height="520" start="10" anchor="Exercise Q3 Q4"]

10- [video_lightbox_youtube video_id="L3wZ_P5TxtU&rel=0" width="640" height="520" start="10" anchor="Exercise Q5, Q6"]

11- [video_lightbox_youtube video_id="lnvZabUAzPk&rel=0" width="640" height="520" start="10" anchor="Exercise Q7, Q8"]

12- [video_lightbox_youtube video_id="MH26K46DY-U&rel=0" width="640" height="520" start="10" anchor="Exercise Q9"]

13- [video_lightbox_youtube video_id="pKRnazXHLjU&rel=0" width="640" height="520" start="10" anchor="Exercise Q10, Q11"]

14- [video_lightbox_youtube video_id="aUacx44_LDg&rel=0" width="640" height="520" start="10" anchor="Exercise Q12"]

Chapter 8 : Winds, Storms and Cyclones

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1- [video_lightbox_youtube video_id="t2b6V_W_0aM&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="hvlD36vcpeQ&rel=0" width="640" height="520" start="10" anchor="Cyclones"]

3- [video_lightbox_youtube video_id="x4gXdYd4etM&rel=0" width="640" height="520" start="10" anchor="Formation of Cyclone "]

4- [video_lightbox_youtube video_id="3HDYwJoV2tM&rel=0" width="640" height="520" start="10" anchor="Wind"]

5- [video_lightbox_youtube video_id="dDM-AsGXbCI&rel=0" width="640" height="520" start="10" anchor="How Wind Currents Are Generated?"]

6- [video_lightbox_youtube video_id="Oi76s3AedRo&rel=0" width="640" height="520" start="10" anchor="Air Exerts Pressure"]

7- [video_lightbox_youtube video_id="Za6_CLyRa9I&rel=0" width="640" height="520" start="10" anchor="Thunderstorm & Cyclone"]

8- [video_lightbox_youtube video_id="lcaSrYjZ-VM&rel=0" width="640" height="520" start="10" anchor="Structure of Cyclone"]

9- [video_lightbox_youtube video_id="e_3PQ3e-NrY&rel=0" width="640" height="520" start="10" anchor="Destruction Caused by Cyclone"]

10- [video_lightbox_youtube video_id="48XfJhKDqeo&rel=0" width="640" height="520" start="10" anchor="Safety Measures of Cyclone"]

11- [video_lightbox_youtube video_id="NbvlhfywM7g&rel=0" width="640" height="520" start="10" anchor="Cyclone Hit Area"]

12- [video_lightbox_youtube video_id="lOb5Jj9M1Js&rel=0" width="640" height="520" start="10" anchor="Predicting & Protecting from Cyclone"]

13- [video_lightbox_youtube video_id="CNbC-6KYWmQ&rel=0" width="640" height="520" start="10" anchor="Protect Themselves from Cyclones"]

14- [video_lightbox_youtube video_id="Q_3KWxGEh24&rel=0" width="640" height="520" start="10" anchor="Tornado"]

15- [video_lightbox_youtube video_id="pNw68PhhpC4&rel=0" width="640" height="520" start="10" anchor="Exercise Q1"]

16- [video_lightbox_youtube video_id="kWnYVTBjiFQ&rel=0" width="640" height="520" start="10" anchor="Exercise Q2"]

17- [video_lightbox_youtube video_id="FBMYM0snck4&rel=0" width="640" height="520" start="10" anchor="Exercise Q3"]

18- [video_lightbox_youtube video_id="s_MacD6-J90&rel=0" width="640" height="520" start="10" anchor="Exercise Q4"]

19- [video_lightbox_youtube video_id="KsngBRzu6aA&rel=0" width="640" height="520" start="10" anchor="Exercise Q5"]

20- [video_lightbox_youtube video_id="xSUjHwGXRNM&rel=0" width="640" height="520" start="10" anchor="Exercise Q6"]

21- [video_lightbox_youtube video_id="MGSZqQE21R0&rel=0" width="640" height="520" start="10" anchor="Exercise Q7"]

22- [video_lightbox_youtube video_id="V35uMGTLGM8&rel=0" width="640" height="520" start="10" anchor="Exercise Q8"]

Chapter 9 : Soil

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1- [video_lightbox_youtube video_id="0PpmloWKRCI&rel=0" width="640" height="520" start="10" anchor=" Importance of Soil"]

2- [video_lightbox_youtube video_id="C5VJEYJE-TE&rel=0" width="640" height="520" start="10" anchor="How is Soil Formed?"]

3- [video_lightbox_youtube video_id="O1j516UjlOQ&rel=0" width="640" height="520" start="10" anchor="Soil Profile"]

4- [video_lightbox_youtube video_id="gtgKCql4I5U&rel=0" width="640" height="520" start="10" anchor="Properties of Soil"]

5- [video_lightbox_youtube video_id="e_EVi0_DwiU&rel=0" width="640" height="520" start="10" anchor=" Layers of Soil"]

6- [video_lightbox_youtube video_id="1CyjGJPpenM&rel=0" width="640" height="520" start="10" anchor="What Pollutes the Soil"]

7- [video_lightbox_youtube video_id="cZUZuispNfg&rel=0" width="640" height="520" start="10" anchor="Type Of Soil"]

8 [video_lightbox_youtube video_id="DxyiHRIvuFY&rel=0" width="640" height="520" start="10" anchor="Soil & Crops"]

9- [video_lightbox_youtube video_id="gZHvkU-fQ8Y&rel=0" width="640" height="520" start="10" anchor="Soil Erosion"]

10- [video_lightbox_youtube video_id="J2xZ6RJ8PyI&rel=0" width="640" height="520" start="10" anchor="Exercise Q1,Q2"]

11- [video_lightbox_youtube video_id="U-pY-9yF2_Y&rel=0" width="640" height="520" start="10" anchor="Exercise Q3"]

12- [video_lightbox_youtube video_id="HBfMobVUjBY&rel=0" width="640" height="520" start="10" anchor="Exercise Q4"]

13- [video_lightbox_youtube video_id="5scd60Pz_mE&rel=0" width="640" height="520" start="10" anchor="Exercise Q5"]

14- [video_lightbox_youtube video_id="iQNToEotuhU&rel=0" width="640" height="520" start="10" anchor="Exercise Q6"]

15- [video_lightbox_youtube video_id="kTJ5W8zPGmk&rel=0" width="640" height="520" start="10" anchor="Exercise Q8"]

16- [video_lightbox_youtube video_id="tAzp1yV7PVA&rel=0" width="640" height="520" start="10" anchor="Exercise Q9"]

17- [video_lightbox_youtube video_id="02XPlmWaMk8&rel=0" width="640" height="520" start="10" anchor="Exercise Q10"]

Chapter 10 : Respiration in Organisms

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1- [video_lightbox_youtube video_id="0HYjgb0smJI&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="n1PBbHhiYQ0&rel=0" width="640" height="520" start="10" anchor="Breathing"]

3- [video_lightbox_youtube video_id="AkoQT-PMVPc&rel=0" width="640" height="520" start="10" anchor="Mechanism of Breathing in Humans"]

4- [video_lightbox_youtube video_id="bJLX-fbwEi8&rel=0" width="640" height="520" start="10" anchor="What Do We Breath Out?"]

5- [video_lightbox_youtube video_id="GOyiXbNnIR4&rel=0" width="640" height="520" start="10" anchor="Breathing in Other Organisms"]

6- [video_lightbox_youtube video_id="NmYJMinJxEU&rel=0" width="640" height="520" start="10" anchor="Breathing in Other Organisms-2"]

7- [video_lightbox_youtube video_id="wGj-deY5mao&rel=0" width="640" height="520" start="10" anchor="Why Do We Sneeze?"]

8- [video_lightbox_youtube video_id="wzJHcBkmBfY&rel=0" width="640" height="520" start="10" anchor="Anaerobic Organism"]

9- [video_lightbox_youtube video_id="jME4Z4mN334&rel=0" width="640" height="520" start="10" anchor="Anaerobic Respiration in Human Beings"]

10- [video_lightbox_youtube video_id="Zx_ZHJszLek&rel=0" width="640" height="520" start="10" anchor="Aerobic and Anaerobic Respiration"]

11- [video_lightbox_youtube video_id="5gfa4kN7O9g&rel=0" width="640" height="520" start="10" anchor="Respiration in Plants"]

12- [video_lightbox_youtube video_id="IeKfG3a26_w&rel=0" width="640" height="520" start="10" anchor="Why Plants Can Die If Overwatered?"]

13- [video_lightbox_youtube video_id="w_2LcD3obJM&rel=0" width="640" height="520" start="10" anchor="What is Cellular Respiration? "]

14- [video_lightbox_youtube video_id="Z312o1ex4Q0&rel=0" width="640" height="520" start="10" anchor="Why We Feel Hungry After A Physical Activity?"]

15- [video_lightbox_youtube video_id="JBNO8peKnOo&rel=0" width="640" height="520" start="10" anchor="Exercise Q1"]

16- [video_lightbox_youtube video_id="cv00hq6l14Q&rel=0" width="640" height="520" start="10" anchor="Exercise Q2"]

17- [video_lightbox_youtube video_id="sQYbbsGw9vw&rel=0" width="640" height="520" start="10" anchor="Exercise Q4"]

18- [video_lightbox_youtube video_id="7YDE6lHG708&rel=0" width="640" height="520" start="10" anchor="Exercise Q5"]

19- [video_lightbox_youtube video_id="U_J6blwewvc&rel=0" width="640" height="520" start="10" anchor="Exercise Q6"]

20- [video_lightbox_youtube video_id="Inqbpl_Yhsc&rel=0" width="640" height="520" start="10" anchor="Exercise Q7"]

21- [video_lightbox_youtube video_id="bh3GitV8Iko&rel=0" width="640" height="520" start="10" anchor="Exercise Q8"]

22- [video_lightbox_youtube video_id="v83swE_QER4&rel=0" width="640" height="520" start="10" anchor="Exercise Q9"]

Chapter 11 : Transportation in Animals and Plants

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1- [video_lightbox_youtube video_id="XRfejfR4vCo&rel=0" width="640" height="520" start="10" anchor="Full Chapter"]

2- [video_lightbox_youtube video_id="NSNNPx-tyUw&rel=0" width="640" height="520" start="10" anchor="Exercise Q2"]

3- [video_lightbox_youtube video_id="kybVwF0hizY&rel=0" width="640" height="520" start="10" anchor="Exercise Q2, Q3"]

4- [video_lightbox_youtube video_id="unpFHZt9-vg&rel=0" width="640" height="520" start="10" anchor="Exercise Q4"]

5- [video_lightbox_youtube video_id="rrtuoxvm8v&rel=0" width="640" height="520" start="10" anchor="Exercise Q5, Q6"]

6- [video_lightbox_youtube video_id="FRL_lb4cKuE&rel=0" width="640" height="520" start="10" anchor="Exercise Q7"]

7- [video_lightbox_youtube video_id="lOCim7-ueL8&rel=0" width="640" height="520" start="10" anchor="Exercise Q8"]

8- [video_lightbox_youtube video_id="Z2698m8o1i4&rel=0" width="640" height="520" start="10" anchor="Exercise Q11"]

9- [video_lightbox_youtube video_id="aJkzLfLTwlw&rel=0" width="640" height="520" start="10" anchor="Exercise Q12"]

Chapter 12 : Reproduction in Plants

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1- [video_lightbox_youtube video_id="P9qbtia8vSI&rel=0" width="640" height="520" start="10" anchor="Full Chapter"]

2- [video_lightbox_youtube video_id="9PZ981X0P2U&rel=0" width="640" height="520" start="10" anchor="Exercise Q1"]

3- [video_lightbox_youtube video_id="S14BTegNncI&rel=0" width="640" height="520" start="10" anchor="Exercise Q2"]

4- [video_lightbox_youtube video_id="3hHxlOOaNIo&rel=0" width="640" height="520" start="10" anchor="Exercise Q3"]

5- [video_lightbox_youtube video_id="CvYaqcNAW7w&rel=0" width="640" height="520" start="10" anchor="Exercise Q4"]

6- [video_lightbox_youtube video_id="jMhSZxSfxII&rel=0" width="640" height="520" start="10" anchor="Exercise Q8"]

Chapter 13 : Motion and Time

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1- [video_lightbox_youtube video_id="EXv2rnWCP4Q&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="dvkj9B5ICY4&rel=0" width="640" height="520" start="10" anchor="Slow or Fast Motion"]

3- [video_lightbox_youtube video_id="pcaI4hpu3TU&rel=0" width="640" height="520" start="10" anchor="The Speed of an Object"]

4- [video_lightbox_youtube video_id="ljfijAyNgfU&rel=0" width="640" height="520" start="10" anchor="Measuring Time"]

5- [video_lightbox_youtube video_id="4PrIQi9tbJg&rel=0" width="640" height="520" start="10" anchor="Periodic Motion of A Simple Pendulum"]

6- [video_lightbox_youtube video_id="ci1I0DPqsZk&rel=0" width="640" height="520" start="10" anchor="Units to Measure Time & Speed"]

7- [video_lightbox_youtube video_id="SEstKpXwP7E&rel=0" width="640" height="520" start="10" anchor="Formulas"]

8- [video_lightbox_youtube video_id="0BzXHVAkjr8&rel=0" width="640" height="520" start="10" anchor="OdoMeter - Speedometer"]

9- [video_lightbox_youtube video_id="zM34OUOmVzI&rel=0" width="640" height="520" start="10" anchor="Distance-Time- Graphs"]

10- [video_lightbox_youtube video_id="t7Lt4Fsq_pE&rel=0" width="640" height="520" start="10" anchor="Exercise Q1"]

11- [video_lightbox_youtube video_id="5_EcVL-4jUA&rel=0" width="640" height="520" start="10" anchor="Exercise Q2"]

12- [video_lightbox_youtube video_id="MtqpdTy-mb4&rel=0" width="640" height="520" start="10" anchor="Exercise Q3"]

13- [video_lightbox_youtube video_id="fKeSzQyTB30&rel=0" width="640" height="520" start="10" anchor="Exercise Q4"]

14- [video_lightbox_youtube video_id="9CizbSr-XZM&rel=0" width="640" height="520" start="10" anchor="Exercise Q5"]

15- [video_lightbox_youtube video_id="NMsUFgp8SeU&rel=0" width="640" height="520" start="10" anchor="Exercise Q6"]

16- [video_lightbox_youtube video_id="HgxYpaJgDQE&rel=0" width="640" height="520" start="10" anchor="Exercise Q7"]

17- [video_lightbox_youtube video_id="Wt1GB0Rjz1I&rel=0" width="640" height="520" start="10" anchor="Exercise Q8, Q9"]

18- [video_lightbox_youtube video_id="-7vht-aOfgo&rel=0" width="640" height="520" start="10" anchor="Exercise Q10"]

19- [video_lightbox_youtube video_id="Q_Pw8i1mR6M&rel=0" width="640" height="520" start="10" anchor="Exercise Q11"]

Chapter 14 : Electric Current and its Effects

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1- [video_lightbox_youtube video_id="vyFvu7GkREc&rel=0" width="640" height="520" start="10" anchor="Electric current and its effects "]

2- [video_lightbox_youtube video_id="0ORPi-32A24&rel=0" width="640" height="520" start="10" anchor="Electric circuits, Cell, Battery"]

3- [video_lightbox_youtube video_id="7WKA2jZXWLE&rel=0" width="640" height="520" start="10" anchor="Heating Effects of Current"]

4- [video_lightbox_youtube video_id="I6hRKJhvPWE&rel=0" width="640" height="520" start="10" anchor="Magnetic Effects of Current"]

5- [video_lightbox_youtube video_id="BT66Ws2yz3A&rel=0" width="640" height="520" start="10" anchor="Questions"]

Chapter 15 : Light

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1- [video_lightbox_youtube video_id="KCMBxD_2uds&rel=0" width="640" height="520" start="10" anchor="Spherical Mirrors"]

2- [video_lightbox_youtube video_id="ezhzAVqczaQ&rel=0" width="640" height="520" start="10" anchor="Applications of Concave & Convex Mirror"]

3- [video_lightbox_youtube video_id="icPJpgGWtCI&rel=0" width="640" height="520" start="10" anchor="Image Formed by Concave & Convex Mirror"]

4- [video_lightbox_youtube video_id="ZPHuuBlXklM&rel=0" width="640" height="520" start="10" anchor="What is Rainbow?"]

5- [video_lightbox_youtube video_id="ep6OvlMtTa8&rel=0" width="640" height="520" start="10" anchor="Newton's Disc "]

6- [video_lightbox_youtube video_id="B0G6VYSozo4&rel=0" width="640" height="520" start="10" anchor="Exercise Q1"]

7- [video_lightbox_youtube video_id="yMo9uI_QtMY&rel=0" width="640" height="520" start="10" anchor="Exercise Q2"]

8- [video_lightbox_youtube video_id="cj2d2n-xX3o&rel=0" width="640" height="520" start="10" anchor="Exercise Q3"]

9- [video_lightbox_youtube video_id="3kjwsiFqYik&rel=0" width="640" height="520" start="10" anchor="Exercise Q4, Q5"]

10- [video_lightbox_youtube video_id="lVYTsiinLDw&rel=0" width="640" height="520" start="10" anchor="Exercise Q6, Q9, Q10"]

11- [video_lightbox_youtube video_id="zStIZF9vMUo&rel=0" width="640" height="520" start="10" anchor="Exercise Q7, Q8"]

12- [video_lightbox_youtube video_id="3pjk9uzdSoA&rel=0" width="640" height="520" start="10" anchor="Exercise Q11, Q12"]

Chapter 16 : Water: A Precious Resource

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1- [video_lightbox_youtube video_id="mox3_l6Fsr4&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="hJm4jZLBVm4&rel=0" width="640" height="520" start="10" anchor="Sources of Water"]

3- [video_lightbox_youtube video_id="ozlUnCNiaxg&rel=0" width="640" height="520" start="10" anchor="Forms of Water"]

4- [video_lightbox_youtube video_id="Sp-uLrs3ceY&rel=0" width="640" height="520" start="10" anchor="Water Cycle"]

5- [video_lightbox_youtube video_id="KG2kY_btrZc&rel=0" width="640" height="520" start="10" anchor="Water Scarcity"]

6- [video_lightbox_youtube video_id="muuIzPpg760&rel=0" width="640" height="520" start="10" anchor="Significance of Water"]

7- [video_lightbox_youtube video_id="KGAsO_6356Y&rel=0" width="640" height="520" start="10" anchor="Groundwater : Water Table"]

8- [video_lightbox_youtube video_id="8SGA0jcC_kM&rel=0" width="640" height="520" start="10" anchor="Sources of Groundwater: Aquifers"]

9- [video_lightbox_youtube video_id="mOkU0Ei2-Pk&rel=0" width="640" height="520" start="10" anchor="Depletion of Water Table"]

10- [video_lightbox_youtube video_id="LlfZTo1BGr8&rel=0" width="640" height="520" start="10" anchor="Drip Irrigation Techniques: Rain water Harvesting"]

11- [video_lightbox_youtube video_id="6hCyyC4EzSY&rel=0" width="640" height="520" start="10" anchor="Questions"]

12- [video_lightbox_youtube video_id="ONDU2b4w46w&rel=0" width="640" height="520" start="10" anchor="Questions"]

Chapter 17 : Forests: Our Lifeline

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1- [video_lightbox_youtube video_id="sTnKxGdSOXs&rel=0" width="640" height="520" start="10" anchor="Introduction"]

2- [video_lightbox_youtube video_id="VksB-QuHLoQ&rel=0" width="640" height="520" start="10" anchor="Plants in forests"]

3- [video_lightbox_youtube video_id="IKxhldVorLE&rel=0" width="640" height="520" start="10" anchor="Animals in Forests"]

4- [video_lightbox_youtube video_id="B-mfBXJOfAA&rel=0" width="640" height="520" start="10" anchor="Green lungs of nature"]

5- [video_lightbox_youtube video_id="CLW7xCoCeb8&rel=0" width="640" height="520" start="10" anchor="Food Chain"]

6- [video_lightbox_youtube video_id="eugxQvtAjuU&rel=0" width="640" height="520" start="10" anchor="Decomposers"]

7- [video_lightbox_youtube video_id="sDSy9jjg5f0&rel=0" width="640" height="520" start="10" anchor="Forests maintain water table"]

8- [video_lightbox_youtube video_id="iJGW_XkmXX8&rel=0" width="640" height="520" start="10" anchor="Deforestation"]

9- [video_lightbox_youtube video_id="MB02h87Ncdw&rel=0" width="640" height="520" start="10" anchor="Questions"]

10- [video_lightbox_youtube video_id="g4nSYpnBZ4U&rel=0" width="640" height="520" start="10" anchor="Questions"]

Chapter 18 : Wastewater Story

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1- [video_lightbox_youtube video_id="Yzocg8wGa-8&rel=0" width="640" height="520" start="10" anchor="Inroduction"]

2- [video_lightbox_youtube video_id="k4162X0u-ns&rel=0" width="640" height="520" start="10" anchor="Sewage"]

3- [video_lightbox_youtube video_id="JrcmIDCWGqU&rel=0" width="640" height="520" start="10" anchor="Sewerage, Manholes"]

4- [video_lightbox_youtube video_id="Pjk8K3AA0GE&rel=0" width="640" height="520" start="10" anchor="Preliminary treatment of Sewage"]

5- [video_lightbox_youtube video_id="J-IwAHYShoY&rel=0" width="640" height="520" start="10" anchor="Primary treatment of Sewage"]

6- [video_lightbox_youtube video_id="1-0AsIVbGqU&rel=0" width="640" height="520" start="10" anchor="Secondary treatment of Sewage"]

7- [video_lightbox_youtube video_id="y1KSngIDzPI&rel=0" width="640" height="520" start="10" anchor="Tertiary treatment of Sewage"]

8- [video_lightbox_youtube video_id="285G7a-hiTg&rel=0" width="640" height="520" start="10" anchor="Sewage harming aquatic life"]

9- [video_lightbox_youtube video_id="75n9fKpWEPY&rel=0" width="640" height="520" start="10" anchor="Disease caused by Pathogens"]

10- [video_lightbox_youtube video_id="zIuHzHeEvD8&rel=0" width="640" height="520" start="10" anchor="Sewage disposals, Questions"]

11- [video_lightbox_youtube video_id="K2NUlo263FU&rel=0" width="640" height="520" start="10" anchor="Questions"]