345219
From the total incoming solar radiation how much of it falls on Earth's surface heating it?
1 one-third
2 one-fourth
3 half
4 two-third
Explanation:
Almost half of incoming solar radiation falls on Earth's surface heating it, while a small proportion is reflected back.
BIOXII16: ENVIRONMENTAL ISSUES
345220
Till when the cycle of absorbing long wave (infrared) radiation from the earth and emitting it again towards the earth is continued by green house gases?
1 Till the long wave (infrared) radiations are saturated in atmosphere.
2 Till the long waves are thrown off into the space
3 Till the earth's surface has no long wave radiation to emit
4 Till the infrared radiations are converted into ultraviolet radiations.
Explanation:
Green house gases absorb long wave (infrared) radiation from the earth, and emit it again towards the earth. The cycle continues till the earth's surface has no long wave radiation to emit.
BIOXII16: ENVIRONMENTAL ISSUES
345221
What change in earth's temperature has occurred in the past century?
1 \(0.6^{\circ} \mathrm{C}\) decrease
2 \(10^{\circ} \mathrm{C}\) increase
3 \(0.6^{\circ} \mathrm{C}\) increase
4 \(10^{\circ} \mathrm{C}\) decrease
Explanation:
During the past century, the temperature of Earth has increased by \(0.6^{\circ} \mathrm{C}\).
BIOXII16: ENVIRONMENTAL ISSUES
345222
Given diagram represents the green house effect. Read the statements about it.
1 Increase in the level of green house gases which are responsible for green house effect
2 Greenhouse gases absorb infrared radiations redirected from the earth. The absorbed radiations again come to earth surface and heat it up
3 \(\mathrm{CO}_{2}, \mathrm{CH}_{4}, \mathrm{CFC}\) and \(\mathrm{N}_{2} \mathrm{O}\) are the gases which are responsible for green house effect.
345219
From the total incoming solar radiation how much of it falls on Earth's surface heating it?
1 one-third
2 one-fourth
3 half
4 two-third
Explanation:
Almost half of incoming solar radiation falls on Earth's surface heating it, while a small proportion is reflected back.
BIOXII16: ENVIRONMENTAL ISSUES
345220
Till when the cycle of absorbing long wave (infrared) radiation from the earth and emitting it again towards the earth is continued by green house gases?
1 Till the long wave (infrared) radiations are saturated in atmosphere.
2 Till the long waves are thrown off into the space
3 Till the earth's surface has no long wave radiation to emit
4 Till the infrared radiations are converted into ultraviolet radiations.
Explanation:
Green house gases absorb long wave (infrared) radiation from the earth, and emit it again towards the earth. The cycle continues till the earth's surface has no long wave radiation to emit.
BIOXII16: ENVIRONMENTAL ISSUES
345221
What change in earth's temperature has occurred in the past century?
1 \(0.6^{\circ} \mathrm{C}\) decrease
2 \(10^{\circ} \mathrm{C}\) increase
3 \(0.6^{\circ} \mathrm{C}\) increase
4 \(10^{\circ} \mathrm{C}\) decrease
Explanation:
During the past century, the temperature of Earth has increased by \(0.6^{\circ} \mathrm{C}\).
BIOXII16: ENVIRONMENTAL ISSUES
345222
Given diagram represents the green house effect. Read the statements about it.
1 Increase in the level of green house gases which are responsible for green house effect
2 Greenhouse gases absorb infrared radiations redirected from the earth. The absorbed radiations again come to earth surface and heat it up
3 \(\mathrm{CO}_{2}, \mathrm{CH}_{4}, \mathrm{CFC}\) and \(\mathrm{N}_{2} \mathrm{O}\) are the gases which are responsible for green house effect.
345219
From the total incoming solar radiation how much of it falls on Earth's surface heating it?
1 one-third
2 one-fourth
3 half
4 two-third
Explanation:
Almost half of incoming solar radiation falls on Earth's surface heating it, while a small proportion is reflected back.
BIOXII16: ENVIRONMENTAL ISSUES
345220
Till when the cycle of absorbing long wave (infrared) radiation from the earth and emitting it again towards the earth is continued by green house gases?
1 Till the long wave (infrared) radiations are saturated in atmosphere.
2 Till the long waves are thrown off into the space
3 Till the earth's surface has no long wave radiation to emit
4 Till the infrared radiations are converted into ultraviolet radiations.
Explanation:
Green house gases absorb long wave (infrared) radiation from the earth, and emit it again towards the earth. The cycle continues till the earth's surface has no long wave radiation to emit.
BIOXII16: ENVIRONMENTAL ISSUES
345221
What change in earth's temperature has occurred in the past century?
1 \(0.6^{\circ} \mathrm{C}\) decrease
2 \(10^{\circ} \mathrm{C}\) increase
3 \(0.6^{\circ} \mathrm{C}\) increase
4 \(10^{\circ} \mathrm{C}\) decrease
Explanation:
During the past century, the temperature of Earth has increased by \(0.6^{\circ} \mathrm{C}\).
BIOXII16: ENVIRONMENTAL ISSUES
345222
Given diagram represents the green house effect. Read the statements about it.
1 Increase in the level of green house gases which are responsible for green house effect
2 Greenhouse gases absorb infrared radiations redirected from the earth. The absorbed radiations again come to earth surface and heat it up
3 \(\mathrm{CO}_{2}, \mathrm{CH}_{4}, \mathrm{CFC}\) and \(\mathrm{N}_{2} \mathrm{O}\) are the gases which are responsible for green house effect.
345219
From the total incoming solar radiation how much of it falls on Earth's surface heating it?
1 one-third
2 one-fourth
3 half
4 two-third
Explanation:
Almost half of incoming solar radiation falls on Earth's surface heating it, while a small proportion is reflected back.
BIOXII16: ENVIRONMENTAL ISSUES
345220
Till when the cycle of absorbing long wave (infrared) radiation from the earth and emitting it again towards the earth is continued by green house gases?
1 Till the long wave (infrared) radiations are saturated in atmosphere.
2 Till the long waves are thrown off into the space
3 Till the earth's surface has no long wave radiation to emit
4 Till the infrared radiations are converted into ultraviolet radiations.
Explanation:
Green house gases absorb long wave (infrared) radiation from the earth, and emit it again towards the earth. The cycle continues till the earth's surface has no long wave radiation to emit.
BIOXII16: ENVIRONMENTAL ISSUES
345221
What change in earth's temperature has occurred in the past century?
1 \(0.6^{\circ} \mathrm{C}\) decrease
2 \(10^{\circ} \mathrm{C}\) increase
3 \(0.6^{\circ} \mathrm{C}\) increase
4 \(10^{\circ} \mathrm{C}\) decrease
Explanation:
During the past century, the temperature of Earth has increased by \(0.6^{\circ} \mathrm{C}\).
BIOXII16: ENVIRONMENTAL ISSUES
345222
Given diagram represents the green house effect. Read the statements about it.
1 Increase in the level of green house gases which are responsible for green house effect
2 Greenhouse gases absorb infrared radiations redirected from the earth. The absorbed radiations again come to earth surface and heat it up
3 \(\mathrm{CO}_{2}, \mathrm{CH}_{4}, \mathrm{CFC}\) and \(\mathrm{N}_{2} \mathrm{O}\) are the gases which are responsible for green house effect.
