Multiple choice general knowledge

What is that part of the river called where the fresh water of the river mixes with the salt water of the sea?

  1. Strait

  2. Junction

  3. Tributary

  4. Estuary

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An estuary is where freshwater from rivers meets and mixes with seawater - a transitional zone with brackish water. A strait is a narrow water passage, junction is a general meeting point, and tributary feeds INTO a river.