Our Environment

Earth looks blue from space -Give reason

• About the 71% of the earth is covered by water so the Earth looks blue in colour from space.

• The 21% of the Earth is covered by land so the earth looks blue in colour from the space.

a mixture of gases that surround the earth

• thermosphere
• Troposphere
• Atmosphere
• Ozone Layer

Which options below is correct for lithosphere

• Lithosphere is the blanket of air surrounding the Earth

• Lithosphere consists of 84% water

• Lithosphere is the layer below the blanket of air surrounding the Earth

The biosphere consists of

• Lithosphere

• Atmosphere

• Hydrosphere

• Troposphere

• Monosphere

The atmosphere is made up primarily of 

• Nitrogen
• Oxygen
• Carbon Dioxide
• Water Vapor

Are glaciers part of the hydrosphere

• Yes

• No

• Some glaciers only

What layer of the atmosphere do we live in?

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere

The biosphere is made up of distinct zones, each having its own physical and biological environment. These are called managingsystems

• True

• False

which layers contains the ozone layer?

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere

Percentage of oxygen in the atmosphere??

• 74%

• 29%

• 21%

• 19%