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Answer : 1. "rises slightly upwards"
When a boat enters the sea from a river, then?
5Q:
When a boat enters the sea from a river, then?
- 1rises slightly upwardstrue
- 2sinks slightlyfalse
- 3remains unchangedfalse
- 4none of thesefalse
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Answer : 1. "rises slightly upwards"
Explanation :
The correct answer is It rises a little. A ship rises a little when enters the sea from a river. Because of salinity, seawater has more density than river water. In the sea, the more buoyant force is exerted upon the ship than in the river.