Ocean Currents quiz

More questions about Ocean Currents

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   What do cold ocean currents often help create on coasts?

   Answer: Deserts

   Why: Cold water adds little moisture to the air above it, which helps keep the Namib and Atacama dry right down to the shore.

2. 2 Medium

   Why does water under new sea ice get heavy enough to sink?

   Answer: Extra salt

   Why: Sinking polar water like this sets off the slow, deep currents that carry water around the globe.

3. 3 Hard

   At what angle to the wind does wind-driven water move overall?

   Answer: 90 degrees

   Why: The top layer moves about 45 degrees off the wind, and deeper layers turn further, so the upper 100 m nets out at a right angle.

4. 4 Easy

   What ocean current do the turtles ride in Finding Nemo?

   Answer: East Australian Current

   Why: The real current carries warm tropical water south along Australia's east coast, part of it as far as Tasmania.

5. 5 Medium

   Who first described the Gulf Stream, in 1513?

   Answer: Juan Ponce de León

   Why: His original logs are lost, so the account survives through a Spanish history printed in the early 1600s.

6. 6 Hard

   Where did a German drift bottle thrown in 1886 turn up in 2018?

   Answer: Australia

   Why: It was one of thousands thrown overboard in a 69-year German experiment to map currents for faster shipping routes.