SST Grade 7 WATER

THE TOHOKU TSUNAMI HAPPENED IN WHICH YEAR

• 2004

• 2012

• 2011

• 2002

WHAT IS THIS

• CYCLONE

• POLLUTION

• TSUNAMI

• EARTHQUAKE

IN PLACES WHERE THE WARM AND COLD CURRENTS MEET, A PLENTY OF __________ ARE FOUND

• SHARKS

• PLANKTONS

• DOLPHINS

• ALL THE ABOVE

WHAT ARE THE USES OF OCEANS

• SERVES AS MEANS OF TRANSPORTATION

• THEY CAN BE HARNESSED TO GENERATE THE ELECTRICITY

• MODERATE THE CLIMATE OF OCEANS

• USED FOR DRINKING

AMONG THESE WHICH STATE IN INDIA IS HIGHLY AFFECTED BY TSUNAMIS

• KERALA

• TAMILNADU

• GUJARAT

• ANDHRA PRADESH

ALL THE WATE BODIES SUCH AS THE OCEANS, SEAS, RIVERS, LAKES, ETC. TOGETHER MAKE UP THE __________.

THE SALINITY OF OCEAN WATER IS ON A AVERAGE OF __________ PER THOUSAND GRAMS OF WATER

• 89.5 GRAMS

• 35 GRAMS

• 1 GRAM

• 65 GRAMS

_________ ARE THE PERIODIC RISE AND FALL OF WATER LEVEL IN THE SEA WHICH OCCUR AT REGULAR INTREVALS, TWICE A DAY

• WAVES

• TIDES

• OCEAN CURRENTS

• NONE

WHICH ONE EXERTS A LARGER GRAVITATIONAL PULL TO FORM TIDES

________ are the alternate up and down of movement of water particles caused by the winds.