Chapter 4 Kuiss

Without green house gas the earth would have been too cold to live.

• True

• False

Answer explanation

Because green house gas trapping the heat radiated from the earth.

What is the most plentiful gas in the air?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Helium

Answer explanation

Nitrogen is the most abundant gas in the atmosphere, making up about 78% of the air we breathe. In contrast, oxygen is around 21%, while carbon dioxide and helium are present in much smaller amounts.

Human and animals release this gas but plant use it to make their food. What is the name of that gas?

• Carbon Dioxide

• Nitrogen

• Oxygen

• Helium

Our atmosphere is divided into how many layers of atmosphere?

• 4

• 5

• 6

• 7

Answer explanation

The atmosphere is divided into 5 layers: troposphere, stratosphere, mesosphere, thermosphere, and exosphere.

Meteorites that comes to earth burn up in this layer. It lies above Stratosphere, What is the name of this layer?

• Exosphere

• Mesosphere

• Stratosphere

• Lithosphere

Stratosphere is the fourth layer of atmosphere. The temperature in this layer raises very rapidly with increasing height and also This layer helps in radio transmission.

• True

• False

Answer explanation

The statement is false because the stratosphere is the second layer of the atmosphere, not the fourth. While temperature does increase with height in this layer, it does not specifically aid in radio transmission.

This layer contains a layer of ozone gas also free from clouds and associated weather phenomenon, making the most ideal conditions for flying aeroplanes. what is the name of this layer?

• Troposphere

• Thermosphere

• Stratosphere

• Mesosphere

How many countries are on the continent of South America?

• 10

• 11

• 12

• 13

Answer explanation

South America has 12 countries, including Argentina, Bolivia, Brazil, Chili, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.

What is sun represent for in Argentina's flag?

• The sun symbolizing freedom and independence.

• The sun is a tribute to the Spanish crown.
• The sun represents the agricultural wealth of Argentina.
• The sun symbolizes the unity of the provinces.

What is the capital city of Argentina?

• Buenos Aires
• Lima
• Brasilia
• Santiago