Air and water class 5

The atmosphere is divided into__________

• 5 layers

• 6 layers

• 3 layers

• none of the above

tick on any 3 uses of atmosphere

• inhalation

• burning

• cooking

• eating

• photosynthesis

neon is a gas used to make glowing-

• signs

• signboards

• bulbs

• tubes

the process in which the heavier insoluble impurities settle down is called-

• decantation

• filtration

• distillation

• sedimentation

nitrogen is needed for burning

• TRUE

• FALSE

the 4th layer of the earth's atmosphere

• troposphere

• exosphere

• thermosphere