Grade 4 Social Studies January 2021

In the Pacific Ocean, a storm is called a ------------------------.

• hurricane

• cyclone

• typhoon

• thunderstorm

A ------------------------ is formed when a warm wind meets a cold wind.

• drought

• flood

• tornado

• bushfire

------------------------ is a place where wide rivers enter the sea.

• A bay

• An estuary

• A lagoon

• A saltern

The instrument for measuring both direction and strength of the wind is called

• an anemometer

• a barometer

• a windsock

• a wind vane

------------------------ are man-made wetlands.

• Streams

• Lakes

• Mangroves

• Rice fields

A power station in Sri Lanka.

• Dunhinda

• Luxapana

• Hambanthota

A long drought is called a ...........

• Famine

• Female

• Forest

a classroom is a .............................. environment.

• natural

• man made

Wind is a kind of .............................energy.

• renewable

• natural

• non renewable

Coral reefs are found in the .......................... part of Sri Lanka.

• nothern

• central

• coastal