Bihar Police Constable Model Paper 5

CONCEPT:

Greenhouse effect:

• The greenhouse effect is a natural process that warms the Earth's surface.
• When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.
• That trapping of heat is known as the greenhouse effect.

EXPLANATION:

• Radiation heat transfer happens in gases because of the movement of atoms and molecules.
• Greenhouse gases in the atmosphere absorb the infrared radiations of higher wavelengths and warm the atmosphere.