Marine Environment- characteristics of sea- Lesson

Marine Environment

Physico-Chemical characteristics of sea

Multiple Choice

How much of the earth's surface is covered by the oceans?

• A

  About the 55%

• B

  About the 71%

• C

  About the 83%

Multiple Choice

Which of the following is not an ocean?

• A

  Atlantic Ocean

• B

  Indian Ocean

• C

  African Ocean

• D

  Pacific Ocean

Multiple Select

How do you see this fish 50 meters deep?

Multiple Choice

How is called the layer in where is recorded temperature decrease?

• A

  Deep water

• B

  Pycnocline

• C

  Thermocline

• D

  None of the above

Multiple Choice

Which are the movements of the sea?

• A

  Currents- UpWelling- Tsunami

• B

  Currents-Waves-Tides

• C

  Tides- Storm-Winds

Multiple Choice

The waves originate from..

• A

  Movement of water particles

• B

  Currents

• C

  Winds

• D

  A and C are both correct

Multiple Choice

What term is used to indicate the periodic rises and falls of the sea level, due to the attraction of the Moon?

• Waves

• Currents

• Tides

• Up-welling

Multiple Choice

Why Upwelling currents are so important?

• A

  In Upwelling regions supports some of the most productive fisheries activity

• B

  For surfers to have higher waves

• C

  Because they bring nutrient rich-water to the ocean surface

• D

  A and C are correct

Multiple Select

Which of this pictures show a crag?

Multiple Select

Can erosion and sedimentation change the coastline?

• True

• False

Multiple Choice

What could be the origin of the sand?

• A

  Volcanic rocks

• B

  From shells

• C

  Clayey deposits

• D

  All previous answers are correct

Multiple Choice

Which ocean is connected to the Mediterranean by the Strait of Gibraltar?

• A

  Indian Ocean

• B

  Artic Ocean

• C

  Pacific Ocean

• D

  Atlantic Ocean