Planet Earth

List the three main parts of the planet Earth

How many levels of Atmosphere?

• 4

• 5

• 6

• 3

Oxygen makes up about _________________ of the air.

• one-fifth

• four-fifths

• 79%

• 2%

The_____________contains the ozone layer.

• Troposphere

• Stratosphere

• Mesosphere

• Ionosphere

• Exosphere

What is the distance of Ionosphere from earth's surface ?

• 1 to 10 miles

• 10 to 30 miles

• 30 to 50 miles

• 50 to 300 miles

The element that makes up about four-fifths of the air is______________________.

• Oxygen

• Nitrogen

• Carbon Dioxide

• Argon

The lowest level of the atmosphere is called the____________________.

• Stratosphere

• Troposphere

• Mesosphere

• Exosphere

What is the meaning of Hydro ?

• Land

• Air

• Water

• Globe

How many percent of the earth's surface is covered by water?

• 61%

• 51%

• 77%

• 71%

How many layers our earth has?

• 3

• 4

• 5

• 6