Question

EARTH 10

Please chose correct answer:

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1.1. How does the total amount of energy reaching the Earth compare to the total amount of energy leaving the Earth?

a. The energy leaving is much more than the energy arriving

b. The energy leaving is much less than the energy arriving

c. The energy leaving is about equal to the energy arriving, and at exactly the same wavelengths

d. The energy leaving is about equal to the energy arriving, but the energy leaving has longer wavelength

e. The energy leaving is about equal to the energy arriving, but the energy leaving has much shorter wavelength

2. What is accurate about the scientific understanding of the greenhouse effect of CO2?

a. It was discovered by Egyptians and taken back to the Middle East by Moses

b. It was discovered at the giant accelerator at CERN, and given a Nobel Prize

c. It was discovered when people ran microwave ovens in greenhouses, which is why it is called the greenhouse effect

d. It was discovered more than a century ago, and has been confirmed many times since

e. It was discovered by Leonardo da Vinci, and helped start the Renaissance

3. If Earth’s temperature rises:

a. Radiation leaving the planet increases, causing more warming

b. Oceans get more oxygen, which makes fossil-fuel formation slower, so the Earth cools off

c. Oceans get more nitrogen, which makes fossil-fuel formation slower, so the Earth cools off

d. Oceans get less oxygen, which makes fossil-fuel formation faster, lowering CO2 and opposing the warming

e. Frogs produce more methane, cooling the Earth

4. Regarding feedbacks:

a. Positive feedbacks are those we are positive will occur; negative feedbacks we are less sure about

b. Positive feedbacks positively oppose forcing to stabilize the climate; negative feedbacks tend to destabilize the climate by making bad changes bigger

c. Positive feedbacks always amplify changes until they run away, as seen on Venus

d. Negative feedbacks tend to reduce changes, positive feedbacks tend to amplify changes, and the amplifiers may "run away" to very different conditions or stabilize after slight amplification

e. Positive feedbacks cause positive lightning strikes, and negative feedbacks cause negative lightning strikes

Answer 1

The correct answer is c. The energy leaving is about equal to the energy arriving, and at exactly the same wavelengths.

The correct answer is d. It was discovered more than a century ago and has been confirmed many times since.

The correct answer is d. Oceans get less oxygen, which makes fossil-fuel formation faster, lowering CO2 and opposing the warming.

The correct answer is d. Negative feedbacks tend to reduce changes, positive feedbacks tend to amplify changes, and the amplifiers may "run away" to very different conditions or stabilize after slight amplification.