Greenhouse Effect and Global MCQs with Answers

Greenhouse gases are those that ?

• A.Prevent heat to escape
• B.Allow heat to escape freely
• C.Absorb ultraviolet radiation only
• D.Reflect all incoming sunlight

Past Paper MCQ

Which process helps remove carbon dioxide from the atmosphere?

• A.Respiration
• B.Combustion
• C.Forestation
• D.Decomposition

The increase in average temperature of the earth is called global warming. How many degree(s) has the global temperature increased in the last 100 years?

• A.0.5°C
• B.1°C
• C.2°C
• D.1.5°C

What is the term used when excessive greenhouse gases increase the Earth's temperature?

• A.Acid rain
• B.Global warming
• C.Ozone depletion
• D.Greenhouse effect

What happens to the sun's energy after it warms the Earth's surface?

• A.It is completely absorbed by the surface
• B.Weak longwave length rays are released
• C.It is reflected back as shortwave radiation
• D.It is stored permanently in the ground

During global warming, the percentage of carbon dioxide has ?

• A.Increased in atmosphere
• B.Decreased in atmosphere
• C.Remained constant
• D.Increased in oceans only

The greenhouse effect influences global temperatures because ?

• A.It absorbs ultraviolet radiation from the Sun
• B.It reflects sunlight back into space
• C.It traps heat and warms the Earth
• D.It increases oxygen levels in the atmosphere

How many greenhouse gases are covered by the Kyoto Protocol?

• A.Four
• B.Six
• C.Eight
• D.Ten

Which of the following is NOT one of the greenhouse gases regulated by the Kyoto Protocol?

• A.Carbon dioxide (CO₂)
• B.Methane (CH₄)
• C.Ozone (O₃)
• D.Nitrous oxide (N₂O)

Why are sun rays able to pass through the greenhouse gases layer to reach the Earth?

• A.They are powerful shortwave length rays
• B.They are weak longwave length rays
• C.They are reflected by the ozone layer
• D.They are absorbed by clouds first