Science Activity: Hydrosphere

Science activity on the hydrosphere, aimed at fourth or fifth year students.

This activity is available for download in Word template (which can be edited), in PDF (printable) and the completed activity.

Download this science exercise at:

• Word: Science activity: Hydrosphere - 4th or 5th year - Editable template
• PDF: Science Activity: Hydrosphere – 4th or 5th year – Ready to print
• Template: Science activity: Hydrosphere - 4th or 5th year - With answers

SCHOOL: DATE:

PROF: CLASS:

NAME:

HYDROSPHERE

THE WATER THAT MAKES OUR PLANET FORM OUR HYDROSPHERE, 3/4 OF ALL THAT WATER IS SALT. FRESH WATER IS FOUND IN RIVERS, LAKES, GLACIERS, WATER SHEETS AND THE ATMOSPHERE.

WATER IS ESSENTIAL FOR ALL LIFE ON OUR PLANET, IT IS FOUND IN SOLID, LIQUID AND GASEOUS STATES.

WATER DISTRIBUTION IN THE HYDROSPHERE:

• ICE CAPS AND GLACIERS, 2.15% (FRESH WATER IN SOLID STATE);
• ATMOSPHERE WATER 0.001% (FRESH WATER IN A GASEOUS STATE);
• UNDERGROUND WATER 0.62% (FRESH WATER IN LIQUID STATE);
• SURFACE WATER IN RIVERS, LAKES AND BIOMASS 0.029% (FRESH WATER IN LIQUID STATE);
• OCEAN 97.2% (SALT WATER IN LIQUID STATE).

HUMAN BEING USES FRESH WATER FOR VARIOUS PURPOSES, FOR EXAMPLE: FOR CONSUMPTION, FOR GENERATION OF ENERGY (BY MEANS OF HYDROELECTRIC PLANTS), FOR IRRIGATION, FOR BREEDING ANIMALS, IN FACTORIES, ETC.

WE MUST SAVE AND CONSERVE WATER, BECAUSE ONLY 1/4 OF ALL THE WATER ON THE PLANET IS FRESH. AND OF THIS WATER ONLY 1/3 IS ACCESSIBLE TO MAN, AND A GOOD PART OF IT IS ALREADY POLLUTED.

QUESTIONS

1) WHAT IS HYDROSPHERE?

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2) WHAT IS THE PERCENTAGE OF FRESH WATER IN THE EARTH?

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3) WHAT IS THE PERCENTAGE OF SALT WATER?

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4) IN WHICH STATES CAN WE FIND THE WATER?

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5) WHERE CAN WE FIND WATER IN A GASEOUS STATE?

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6) WHERE CAN WE FIND WATER IN SOLID STATE?

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7) WHERE CAN WE FIND LIQUID FRESH WATER?

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8) CITE SOME EXAMPLES OF THE USE OF WATER BY MAN.

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9) WHAT CAN WE DO TO PRESERVE WATER?

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