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Look at a globe: most of our planet is blue. The ocean covers more of the Earth than all the land together.

Almost all the water on Earth is in the ocean.

All the oceans are joined into one big ocean. We give its parts names: the Pacific, the Atlantic, the Indian, the Arctic and the Southern Ocean.

Sea water is salty. The salt comes from rocks on land. Rain and rivers carry tiny bits of it to the sea.

Experiment: Can an egg float?

1. Fill both cups with the same amount of water.
2. Stir lots of salt into one cup until most of it is gone. Now it is salty, like the sea.
3. Guess: will the egg sink or float in the plain water? And in the salty water?
4. Gently put the egg into the plain water with the spoon. What happens?
5. Lift it out and put it into the salty water. What happens now?

Cup	Sink or float?
Plain water	My guess
Salty water	My guess

Questions

1. Draw the ocean: a sunny top with waves, and a dark deep with an animal that makes its own light.

   🍎

2. Is sea water salty?

   yes / no

3. Write the name of one ocean.

Sources for every fact on this sheet: echoesof.science/school/ocean/sources/

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