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Pathshala Note Preview

Pressure | Liquid Pressure | Relative Density | Notes & Solution | 8th Grade

Physics

Pressure

Grade - 8 (BLE)

Question & Answers

Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

Why don’t we feel the high atmospheric pressure in our bodies?

Atmosphere exerts enormous pressure to our body but we do not feel it, why?

1 Answer
  • atmospheric pressure
  • internal pressure
  • reasoning problem
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

Why mercury level decrease in the barometer as to the altitude increases?

The mercury level decreases in the barometer as the altitude increases. Why?

1 Answer
  • altitude
  • barometer
  • Mercury
  • mercury in barometer
  • reasoning problem
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

Why do we feel uneasy at high altitudes? Give reasons.

We feel uneasy at high altitudes. Why?

1 Answer
  • High altitude sickness
  • reasoning problem
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

Why do deep-sea divers wear diving suits? Give reasons.

Deep sea divers wear diving suits. Why?

1 Answer
  • diving suit
  • reasoning problem
  • sea diver
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

Why are the dams made wider at the base?

Dams are made wider at the base. Why?

1 Answer
  • dam
  • reasoning problem
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

A girl with high-heeled shoes makes more depression on the sand than an elephant. Why?

A girl with high-heeled shoes makes much more depression on the sand than an elephant. Why?

1 Answer
  • depression
  • reasoning problem
  • sand
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

Why do all cutting instruments have a sharp edge?

All cutting instruments have the sharp edges. Why?

1 Answer
  • reasoning problem
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

Find the density of an object if its mass is 8000 kg and volume is 1000 m^3. 

Find the density of an object if its mass is 8000 kg and volume is 1000 m3. 

1 Answer
  • density
  • numerical problem
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

A liquid exerts the pressure of 5000 pascals at the bottom of the vessel. If the depth of the liquid is 2 m, find its density.

A liquid exerts the pressure of 5000 pascals at the bottom of the vessel. If the depth of the liquid is 2 m, find its density.

1 Answer
  • liquid pressure
  • numerical problem
Pathshala Nepal
2 years ago Grade - 8 (BLE) Physics Pressure

The dimension of a certain tank is 3m × 2m × 2m. What is the pressure at the bottom of the tank if the tank is half filled?

The dimension of a certain tank is 3m × 2m × 2m. What is the pressure at the bottom of the tank if the tank is half filled? (Given, the density of water = 1000 kg/m3 and g = 10 m/s2)

1 Answer
  • numerical problem
  • Pressure
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