This document defines and describes several types of natural and human-induced disasters. It discusses avalanches, earthquakes, floods, hurricanes, tsunamis, tornadoes, volcanic eruptions, wildfires, and human-induced disasters such as wars and pollution. For each type of disaster, it provides a brief definition and description of the event and potential impacts. The document serves as an overview of common disasters for educational purposes.

1. SOCIAL SCIENCE
HOLIDAY HOMEWORK

2. CONTENTS

3. W HAT A RE D ISASTERS ?
 A disaster weather natural or human induced
, is an event which results in widespread
human loss . It is accompanied by loss of
livelihood , property causing suffering and
loss in a definite area.

4. AVALANCHES
 An avalanche is a large mass of rock debris or
snow that moves rapidly down a mountain slope,
sweeping and grinding everything in its path

5. E ARTHQUAKES
 An earthquake is a tremor in the Earth's crust,
caused by movements below its surface.

6. F LOODS
 Heavy storms may sometimes cause huge
volumes of
water to depart from a river's natural course
and spread
over previously dry land. Unstoppable and all-
pervasive,
the resulting floods can be devastating to
human life."

7. H UMAN I NDUCED
 Human induced disasters are caused due to
human induced hazards for example wars ,
pollution etc.

8. H URRICANES
 Hurricanes are large, swirling storms with winds
of 119 kilometers per hour (74 mph) or higher.

9. T SUNAMIS
 A tsunami is a huge volume of moving
seawater. These giant waves can travel for
thousands of miles across the sea and still have
enough energy and force to destroy buildings,
trees, wildlife and people.

10. TORNADOES
 A tornado is a violent rotating column of air
extending from a thunderstorm to the ground


11. V OLCANIC E RUPTIONS
 A volcano can be simply defined as a rupture or
an opening on the crust of a planet like earth.
This opening allows hot ash, molten rock and
gases to blow off from the underground spaces.

12. W ILDFIRES
 A wildfire also known as forest fire, vegetation
fire, grass fire, peat fire, bushfire (in Australia), or
hill fire is an uncontrolled fire often occurring in
forest areas, but which can also consume houses
or agricultural resources.

13. T HANK Y OU