Earth's Atmosphere and Life
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Questions and Answers

What is a primary reason Venus cannot support life like Earth?

  • It has no surface water.
  • It lacks a magnetic field.
  • Its atmosphere is rich in nitrogen.
  • Its atmosphere is composed primarily of carbon dioxide. (correct)

    • What temperature can surface conditions on Venus reach?

  • 320°C
  • 400°C
  • 500°C
  • 460°C (correct)

    • What harmful substance is found in the clouds of Venus's atmosphere?

  • Ammonia
  • Sulfuric acid (correct)
  • Carbon monoxide
  • Chlorine gas

    • What effect does Venus' atmosphere have on thermal radiation?

    <p>It traps thermal radiation, preventing the planet from cooling. (C)</p> Signup and view all the answers

    What is a significant characteristic of Venus that is similar to Earth?

    <p>Similar size and mass. (B)</p> Signup and view all the answers

    What is the primary role of Earth's atmosphere?

    <p>To create conditions for life and regulate temperature (A)</p> Signup and view all the answers

    How does the atmosphere compare to the size of the Earth?

    <p>It is very thin, like a piece of paper over a basketball (B)</p> Signup and view all the answers

    What phenomenon helps to regulate Earth's temperature during day and night?

    <p>The greenhouse effect (A)</p> Signup and view all the answers

    What would happen to Earth's temperature without the greenhouse effect?

    <p>It would be extremely cold on the night side and very hot on the day side (A)</p> Signup and view all the answers

    What is the greenhouse effect primarily caused by?

    <p>Gases such as carbon dioxide and water vapor in Earth's atmosphere (D)</p> Signup and view all the answers

    Which statement best contrasts Earth’s atmosphere with that of the Moon?

    <p>Earth's atmosphere provides temperature regulation, while the Moon's does not (B)</p> Signup and view all the answers

    What analogy is used to illustrate the thinness of Earth’s atmosphere?

    <p>A piece of paper over a basketball (B)</p> Signup and view all the answers

    What temperature range does the Moon experience due to its lack of atmosphere?

    <p>From −173°C at night to 127°C during the day (C)</p> Signup and view all the answers

    What is the primary role of the ozone layer in Earth's atmosphere?

    <p>Protecting against harmful UV radiation (B)</p> Signup and view all the answers

    Which of the following is necessary for photosynthesis to occur?

    <p>Carbon dioxide (B)</p> Signup and view all the answers

    What health conditions can result from excessive UV radiation exposure?

    <p>Skin cancer and cataracts (D)</p> Signup and view all the answers

    How do plants generally acquire carbon dioxide for photosynthesis?

    <p>Through stomata in their leaves (A)</p> Signup and view all the answers

    Which of the following statements about Earth's atmosphere is true?

    <p>It enables photosynthesis by providing carbon dioxide. (D)</p> Signup and view all the answers

    What process do plants use to convert radiant energy into chemical energy?

    <p>Photosynthesis (D)</p> Signup and view all the answers

    What is one way the atmosphere prevents water loss in plants during photosynthesis?

    <p>By regulating stomata size (C)</p> Signup and view all the answers

    Which critical gas do plants produce during photosynthesis?

    <p>Oxygen (C)</p> Signup and view all the answers

    Study Notes

    Earth's Atmosphere and Life Support

    • Earth's atmosphere is a protective layer surrounding the planet, crucial for life
    • The atmosphere creates habitable conditions for diverse organisms
    • Atmospheric layers have unique characteristics
    • The atmosphere is surprisingly thin, like a piece of paper over a basketball (Earth)

    Greenhouse Effect

    • The atmosphere regulates Earth's temperature, preventing dramatic swings
    • The greenhouse effect: gases trap solar energy, preventing escape
    • Without this effect, Earth's night side would be extremely cold, day side extremely hot
    • The moon, lacking an atmosphere, experiences these extreme temperature fluctuations

    Atmosphere and Photosynthesis

    • Photosynthesis, the process plants use to make food, relies on the atmosphere
    • Plants absorb carbon dioxide through stomata, vital for the process
    • In return, plants release oxygen, crucial for life
    • The exchange of gases (CO2 and O2) between the atmosphere and plants is essential for sustaining life

    Earth's Atmosphere vs Other Atmospheres

    • Other planets, like Venus, have vastly different atmospheres that prevent life
    • Venus has a thick carbon dioxide atmosphere, trapping heat causing extreme temperatures
    • Venus' atmosphere is so thick that it would be impossible to breathe
    • Venus' extreme heat and acidic clouds would make life on Venus uninhabitable

    Ozone Layer Protection

    • The atmosphere protects Earth from harmful UV rays
    • The ozone layer absorbs most UV radiation, minimizing health risks like skin cancer, cataracts

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    Related Documents

    Earth's Life Sustaining Atmosphere PDF

    Description

    Explore the role of Earth's atmosphere in supporting life on our planet. This quiz covers the key features of atmospheric layers, the greenhouse effect, and the vital connection between the atmosphere and photosynthesis. Test your knowledge on how the atmosphere maintains habitable conditions for various organisms.

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