Gradde 10

The lowest temperature of the atmosphere -90 C prevail s in the .........................................

• Troposphere

• Stratosphere

• Mesosphere

According to the structure of the earth, the ......................................... extends from 2900 km to 5150 km from the surface of the Earth.

• Upper mantle

• Lower mantle

• Outter core

The outer core of the structure of the earth consists of liquid metal and the inner core consists of a thick metal.

• True

• False

Side Ashows the layers of the atmosphere of the Earth and side B shows the boundaries of them.

A B

1. Troposphere A. 50 Km - 80 Km

2. Stratosphere B. 0 - 20 Km

3. Mesosphere C. 21 Km - 40 Km

D. 20 Km - 50 Km

• BDA

• CBA

• DAB

• CBD

The ozone layer which absorbs the ultra violet rays of the sun is located in the,

• Troposphere

• Mesosphere

• Stratosphere

• Ionosphere

According to the constitution of gas, the gas that has the 20.95 % in the atmosphere is,

• Nitrogen

• Oxygen

• Hydrogen

• Carbon dioxide

The process Potosynthasis that helps to the existance of humans is done in the,

• Lithosphere

• Atmosphere

• Biosphere

• Hydrosphere

The ozone layer which absorbs the ultra violet rays of the sun is located in the,

• Troposphere

• Mesosphere

• Stratosphere

• Ionosphere

Water in the Earth contains as water vapour in the ................................................................

• Atmosphere

• Hydrosphere

• Lithosphere

The ................................................ forms 2/3 of the land mass of the earth.

• Crust

• Mantle

• Core