unit - 4 our world is always changing

A _____________is an enormous sea wave that travels at very fast speed and flows over a place. If it crashes on land, it causes great damage.

• earthquake

• volcanoes

• tsunami

• pollution

____________________________is named the great wall because it is the longest in the world.

• pyramid of Giza

• Hanging gardens of Babylon

• Lighthouse of Alexandria

• Great wall of China

_____________________is one of the wonders of the world which was built by a king for his wife.

• Light house of Alexandria

• Hanging gardens of Babylon

• The great pyramid of Giza

• The Great Wall of China

________________are peaceful endangered animals too.

• pandas

• dodo

• Caspian tiger

• Elephants

identify the kind of pollution

• air pollution

• noise pollution

• water pollution

• land pollution

Dodos are _____________animals

• extinct

• endangered

A town might become covered with water because of a _____________________

• earthquakes

• lava

• tsunami

• droughts

Every house should have a ready _________________for cases of emergency.

• dress

• lights

• medicines

• emergency kit

An _______________________causes buildings to collapse and roads to crack.

• earthquakes

• tsunami

• lava

• thunderstorms

One of the world wonders is

• the invention of television

• an old newspaper

• the pyramids of Giza