Class-9 EVS Chapter-1 Environment

The objective of Environment studies is

• Raise consciousness about environment conditions

• To teach environmentally appropriate behaviour

• Create an environmental ethic sensitive society

• All of the above

Development activities on the hydrosphere cause

• Air pollution

• Soil pollution

• Water pollution

• Soil erosion

The basic requirements of human beings are provided by

• Industrialisation

• Agriculture

• Nature

• Urbanisation

Environment is the life support system that includes

• Air

• Water

• Land

• All of the above

The term ‘Environment’ has been derived from the French word which means to encircle or surround

• Environ

• Oikos

• Geo

• Aqua

An increase in temperature may bring a change in .....

• Land

• Air

• Water

• Humidity

Light affects the plant life in ...........

• Chlorophyll production

• Heating action

• Vegetative development of plant parts

• All of the above

Water occupies about .......... percent of the total surface area of the earth.

• 70

• 71

• 72

• 73

Only about ........ percent of water is fresh water.

• 2

• 1

• 3

• 5

Water is needed for ..........

• Cooking food

• Cleaning purposes

• cooling engines in the industries and vehicles

• All of the above