1.
When the greenhouse effect becomes stronger, more and more heat will be trapped on the Earth, increasing the average temperature here. What is this called?
Correct Answer
A. Global warming
Explanation
Global warming is the correct answer because it refers to the phenomenon where the Earth's average temperature increases due to the greenhouse effect becoming stronger. The greenhouse effect is caused by the accumulation of greenhouse gases in the atmosphere, which trap heat and prevent it from escaping into space. As a result, more heat is retained on Earth, leading to a rise in temperature. This increase in temperature has various impacts on the planet, including melting ice caps, rising sea levels, and changes in weather patterns.
2.
The greenhouse effect and ozone depletion (holes in the ozone layer) are the same things.
Correct Answer
B. False
Explanation
The statement is false because the greenhouse effect and ozone depletion are not the same things. The greenhouse effect refers to the trapping of heat in the Earth's atmosphere due to certain gases, such as carbon dioxide, while ozone depletion refers to the thinning of the ozone layer in the stratosphere. Although both phenomena are related to the Earth's atmosphere, they have different causes and effects. The greenhouse effect contributes to global warming, while ozone depletion increases the amount of harmful ultraviolet radiation reaching the Earth's surface.
3.
What's the name of the lower atmosphere that contains the greenhouse gases?
Correct Answer
B. TropospHere
Explanation
The correct answer is Troposphere. The troposphere is the lowest layer of Earth's atmosphere, extending from the surface up to about 10-15 kilometers. It is where weather occurs and contains the majority of greenhouse gases, such as carbon dioxide and methane. These gases trap heat from the sun and contribute to the greenhouse effect, which is responsible for the Earth's temperature being suitable for life. The other options, Mesosphere, Exosphere, and Atmosphere, are different layers of the atmosphere but do not specifically contain the majority of greenhouse gases.
4.
Without the "greenhouse effect"...
Correct Answer
A. Overnight temperatures would plunge downward
Explanation
The greenhouse effect refers to the trapping of heat in the Earth's atmosphere by greenhouse gases, such as carbon dioxide and methane. Without this effect, the Earth would lose heat more rapidly, causing overnight temperatures to drop significantly. This is because the greenhouse gases act as a blanket, preventing the escape of heat from the Earth's surface. Therefore, without the greenhouse effect, there would be a rapid cooling of the atmosphere, leading to plunging overnight temperatures.
5.
Which of the following are greenhouse gases?
Correct Answer
D. All of the above
Explanation
Carbon dioxide, water vapor, and methane are all greenhouse gases. Greenhouse gases are gases that trap heat in the Earth's atmosphere, leading to the greenhouse effect and contributing to global warming. Carbon dioxide is released through the burning of fossil fuels, water vapor is naturally present in the atmosphere, and methane is emitted through various human activities such as agriculture and the production of coal, oil, and natural gas. Therefore, all three gases mentioned in the options are greenhouse gases.
6.
What do scientists think the effect will be of having more greenhouse gases in our atmosphere?
Correct Answer
A. More Warming of the atmospHere
Explanation
Scientists believe that the increase in greenhouse gases in our atmosphere will result in more warming of the atmosphere. Greenhouse gases, such as carbon dioxide and methane, trap heat from the sun and prevent it from escaping back into space. This leads to a gradual increase in the Earth's temperature, known as global warming. The accumulation of greenhouse gases from human activities, such as burning fossil fuels, is causing the Earth's temperature to rise at an alarming rate, leading to various negative impacts such as climate change, sea-level rise, and extreme weather events.
7.
What do greenhouse gases do in our atmosphere?
Correct Answer
A. These gases absorb the sun heat & emits radiant energy
Explanation
Greenhouse gases in our atmosphere absorb the heat from the sun and then emit radiant energy. This process is known as the greenhouse effect. It allows the Earth to maintain a stable temperature that is suitable for supporting life. Without greenhouse gases, the Earth would be much colder and uninhabitable.
8.
What do humans do that releases greenhouse gases into the atmosphere?
Correct Answer
D. Both A and C
Explanation
Both burning fossil fuels (like gas and coal) and using CFC's release greenhouse gases into the atmosphere. Burning fossil fuels releases carbon dioxide, a major greenhouse gas, while the use of CFC's releases chlorofluorocarbons, which are potent greenhouse gases. Therefore, the correct answer is both A and C.
9.
The greenhouse effect is beneficial as it helps to sustain life on earth by naturally trapping heat in the atmosphere.
Correct Answer
A. True
Explanation
The explanation for the given correct answer is that the greenhouse effect is indeed beneficial as it helps to sustain life on earth. This is because the greenhouse effect is a natural process where certain gases in the Earth's atmosphere trap heat from the sun, preventing it from escaping back into space. This trapped heat keeps the Earth's surface warm enough to support life. Without the greenhouse effect, the Earth would be much colder, making it uninhabitable for most living organisms.