The Global Ocean and types of seas
that there are different types of water reservoirs on Earth;
that water reservoirs are powered by atmospheric precipitation.
list and describe basic types of seas;
show examples of basic types of seas on the map;
The Global Ocean - an area of all oceans and seas connected to each other, covers about 71% of our planet's surface. Thanks to the combination of waters, their level is basically the same. However, various factors may cause short‑term or periodic changes of this level in certain parts of the Global Ocean. There are 4 oceans separated on Earth, the boundaries of which are formed by land and formal lines marked out by humans.
We distinguish:
The Pacific Ocean - covers almost half of the Global Ocean,
The Atlantic Ocean - makes up 25% of the Global Ocean,
The Indian Ocean (around 21%),
The Arctic Ocean (around 4%).
Classifications are distinguishing 3 (the Arctic Ocean is not included) or 5 oceans (the waters around Antarctica are considered to be the Southern Ocean).
Some parts of the oceans tend to be called seas. Mostly, there are 5 main types of seas:
open seas (without a clear border with the ocean),
marginal seas (limited by land and archipelagos of islands or peninsulas),
island seas (surrounded by islands)
mediterranean intercontinental seas (limited by the shores of two continents),
mediterranean intracontinental seas (surrounded by the land of one continent).
Sea fragments surrounded by land from three sides are called bays, and a narrowing of the water area separating two land areas – straits.
On the world map, select examples of 5 different types of seas. For each type, choose a different color. Compare your suggestions with other students' markups.
Which of the seas below are examples of the intercontinental type of sea? Look for them on the map and select all the correct answers.
- Black Sea
- Caribbean Sea
- Norwegian Sea
- The Javanese Sea
- Tasman's Sea
Look at the illustration and indicate what type of sea it is.
- open waters
- marginal sea
- mediterranean intracontinental sea
Look for the map of the Sea of Okock, the Sea of Japan and the Tasman Sea. What type of seas are these? Indicate the correct answer.
- mediterranean intercontinental sea
- open sea
- marginal sea
Look at the illustration and indicate what type of sea it is.
- open sea
- marginal sea
- mediterranean intercontinental sea
Keywords
Global Ocean, open seas, marginal seas, island seas, mediterranean intercontinental seas, mediterranean intracontinental seas, strait, bay
Glossary
fale – ruch cząstek wody powodowany najczęściej siłą wiatru
morze – naturalny zbiornik wodny, mniej lub bardziej wyraźnie oddzielony od oceanu brzegami kontynentu, wyspami lub półwyspami
ocean – wielka część hydrosfery stanowiąca odrębny fragment wszechoceanu; najczęściej wyróżnia się 4 oceany, ale są też klasyfikacje wyróżniające 3 (nie wydziela się wtedy Oceanu Arktycznego) lub 5 oceanów (wody wokół Antarktydy uważa się wówczas za Ocean Południowy)
przypływy – regularnie powtarzające się ruchy poziomu wody w morzu lub w oceanie wywołane siłami przyciągania Księżyca i Słońca
prądy morskie – stałe ruchy wody w oceanach wywołane wiatrami, a zmodyfikowane przez ruch obrotowy Ziemi i siłę Coriolisa