9. Why do the bodies of deep sea fishes burst open while brought to the surface of sea ?
10. Give one example each where the effect of force is increased and where the effect of force is decreased.
11 Why mountaineers suffer from nose bleeding at high altitudes?
Answers
Answer:
This is because the blood in their bodies flows at very. 4).
If we push a moving trolley in the direction in which it is moving, we increase it speed and thus increase in effect or impact of force. If we pull a trolley in the opposite direction from which it is moving, we decrease its speed and thus decrease in effect or impact of force.
Explanation:
Nosebleeds can be caused by being up in a very high altitude. As you climb higher, the amount of oxygen in the air decreases. This makes the air thinner and dryer, which can in turn cause the inside of your nose to crack and bleed.
Answer:
9.It is because of the change in atmospheric pressure.
Explanation:
As we know that atmospheric pressure decreases with height so it is inversely proportional to height.
when fish is in deep sea it is having more atmospheric pressure and is adapted to that pressure but when comes to the surface it is unable to adjust and burst opens.
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