30/11/2023
Std 6 - Science
1. Displacement or difference in the apparent position of an object viewed along two different lines of sight is *Parallax*
2. Metric system was invented in the year *1790 by French*
3. Scale was invented by *William Bedwell*
4. *Odometer* indicates distance travelled by an automobile
5. Length of the forearm - *cubit*
6. Fast oscillation is known as *vibration*
7. The speed of Cheetah is *112km/hr*
8. The world record created by Usain Bolt in completing 100 m is *9.58 sec*
9. Microscopic size robots are known as *Nanobots*
10. Drop of water has *10^21 water molecules*
11. One dot has *>2 lakh molecules*
12. Glass is a *slow moving liquid*
13. Tap root is found in *dicotyledons* qnd fibrous root is found in *monocotyledons*
14. In a plant leaf arises from *nodes*
15. 40 percent photosynthesis of Earth happens in *marine water*
16. The length of river Nile is *6650 km*
17. The length of river Ganges is *2525km*
18. Half of world's oxygen supply comes from *Amazon forest*
19. First land plants were *Mosses and Liverwarts*
20. World habitat day is celebrated on * 1st Monday of October*
21. In case of amoeba, food is digested in *vacoule*
22. The respiratory organs of fish are *gills*
23. The ship of desert is *camel*
24. Animals spending their winter in dormant condition is called *Hibernation* eg. Turtle
25. Spending hot and dry period in an inactive state is known as *Aestivation* eg. Snail
26. Which animal does not drink water? *Kangaroo rat*
27. Vitamin A prevents *Night blindness*
28. Beri Beri is caused due to deficiency of *Vitamin B*
29. Orange, gooseberry, green chilli are rich in *Vitamin C*
30. Scurvy is caused by deficiency of *Vitamin C*
31. Vitamin needed for healthy bones is *Vitamin D*
32. Deficiency of Vitamin D causes *Rickets*
33. Infertility can be caused due to deficiency of *Vitamin E*
34. Deficiency of Vitamin K leads to *bleeding*
35. Mineral that regulates thyroid hormone is * Iodine*
36. Formation of hemoglobin is carried out by *Iron*
37. Protein deficiency diseases - *Kwashiorkar and Marasmus*
38. Iodine deficiency in children causes *Cretinism*
39. Iodine deficiency in adult causes *Goitre*
40. Iron deficiency causes *Anaemia*
41. Oesteomalacia is caused by deficiency of *Phosphorous*
42. Cholera can be spread through *contaminated water*
43. Pneumonia can be spread through *droplets*
44. Typhoid can be caused by *contaminated food or water*
45. Measels is a *viral* disease
46. Tuberculosis is caused by *Mycobacterium tuberculosis*
47. Computer was invented by *Charles Babbage*
48. 5th generation computers uses *Artificial intelligence*
49. ENIAC - Electronic Numerical Integrator and Computer
50. First computer programmer - Augusta Ada Lovelace
30/11/2023
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