ATMOSPHERE CLASS 7

The first thermometer was invented by-

• Galileo Galilei
• Isaac Newton
• Albert Einstein
• Johannes Kepler

Air pressure is measured using a -

• hygrometer
• wind vane
• barometer

• mercury thermometer

The scientific study of weather is called-

The troposphere extends from __ km at the equator and from __ km at the Poles

• 8, 18

• 6, 16

• 18, 8

• 16, 6

The pressure decreases in troposphere with increase in altitude because-

• Pressure increases with increase in height

• Gravity is higher at higher altitudes

• Air becomes thinner as we move up

The ionosphere exists in this layer-

• TROPOSPHERE

• MESOSPHERE

• STRATOSPHERE

• THERMOSPHERE

This layer is ideal for flying airplanes-

• TROPOSPHERE

• STRATOSPHERE

• MESOSPHERE

• THERMOSPHERE

Meteors burn in this layer-

• STRATOSPHERE

• MESOSPHERE

• THERMOSPHERE

• EXOSPHERE

Dust is an important component of the atmosphere because-

• It intercepts and reflects incoming insolation

• It provides the surface on which water vapour condenses

• the beautiful orange-red hues in the sky during sunrise and sunset

• All of the above

This noble gas is used in advertisement signs-