Difference between revisions of "WBSED - 8 - Science :: Physical Environment"

[Author - Kripa S]

http://www.wbsed.gov.in/wbsed/readwrite/etextbook/Paribesh%20O%20Bigyan%20Class%20VIII.pdf#page=11 (Bengali Medium)

[Author - Kripa S]

https://www.youtube.com/watch?v=BzonfxI33oc (Friction)

https://www.youtube.com/watch?v=dcdpVbLOJI4 (work and energy)

[Author - Malabika Sarker]

https://drive.google.com/open?id=0B4m07xnDF8JpenE3Q2ViSW1TRlk (Force and friction video 1)

https://drive.google.com/open?id=0B4m07xnDF8JpLUdnZFdDb1lMUEk (Force and frioction video 2)

[Author - Anu Nived]

http://www.aaronswansonpt.com/wp-content/uploads/2011/07/Pressure.png (force and pressure)

http://www.ekshiksha.org.in/images_force_pressure_VIII/figure_4.JPG (force and pressure)

http://www.ekshiksha.org.in/images_force_pressure_VIII/figure_5.JPG ( Contact force - muscular force)

http://idahoptv.org/sciencetrek/topics/gravity/images/tree_and_apple.png (non contact force - gravittaional force)

[Author - Kripa S]

1. https://www.youtube.com/watch?v=9GR9LvFi0eI&t=14s (pressure magic)

2. https://www.youtube.com/watch?v=feqM6aahfCY (rainbow)

3. Take three large mugs. Label them as A, B and C. Put cold water in mug A and hot water in mug B. Mix some cold and hot water in mug C. Now dip your left hand in mug A and the right hand in mug B. After keeping the hands in the two mugs for 2–3 minutes, put both the hands simultaneously in mug C. Do both the hands get the same feeling?

[Author - Poulami Ganguly]

https://drive.google.com/open?id=0BzNF2YyqQxJ-NjE3YWFWR1l6QlU

[Contributor - Arnab Das]

[Author - Poulami Ganguly]

https://drive.google.com/open?id=0BzNF2YyqQxJ-WE1kR2pKQWNxV00