Physics
Ice bergs float on the surface of water with their …………… portion inside the water surface and …………… portion above the water surface.
- smaller, larger
- larger, equal
- smaller, smaller
- larger, smaller
Related Questions
It is easier for humans to swim in sea water than in river water as :
- the density of sea water is less than that of the river water.
- the density of sea water is more than that of river water.
- the sea is big in comparison to the river.
- None of the above
If a submarine is to dive, its ballast tanks are ……………, so that the average density of the submarine becomes …………… than the density of sea water.
- filled with water, greater
- filled with water, lower
- emptied, greater
- emptied, lower
A balloon does not rise indefinitely because :
- the density of air increases with altitude
- the density of air decreases with altitude
- the weight of the displaced air increases.
- None of the above
When a fish has to rise up in water, it diffuses oxygen gas from its blood into the bladder, so its volume …………… and its average density …………… .
- decreases, decreases
- increases, decreases
- decreases, increases
- increases, increases