Exploring Mars
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Questions and Answers

Which planet did NASA's Mariner 9 probe become the first spacecraft to orbit?

  • Venus
  • Mars (correct)
  • Jupiter
  • Saturn

    • What did the mission engineers use as a reference point to measure altitude on Mars?

  • Sea level
  • The average atmospheric pressure on Mars
  • The highest point on Mars
  • The minimum atmospheric pressure for liquid water to exist (correct)

    • What are the basic assumptions for a gas to be considered ideal?

  • The gas molecules interact with each other continuously.
  • The total volume of the gas molecules is much less than the volume of the container they're in. (correct)
  • The total volume of the gas molecules is much greater than the volume of the container they're in.
  • The collisions between gas molecules are not perfectly elastic.

    • Which phase of water is represented by the triangle in the middle of the phase diagram?

    <p>Liquid</p> Signup and view all the answers

    What is the critical temperature of water?

    <p>647 Kelvin</p> Signup and view all the answers

    What is the triple point of water?

    <p>The temperature and pressure at which water can exist in three phases at once</p> Signup and view all the answers

    Why was the pressure of the triple point of water used as the reference point for mapping Mars?

    <p>To identify places where liquid water could exist on Mars</p> Signup and view all the answers

    According to the kinetic theory of gases, the average kinetic energy of ideal gas molecules in a container is equal to

    <p>half of a molecule's mass times the average squared velocity of the molecules</p> Signup and view all the answers

    What is the equation for finding the root mean square speed of a gas molecule?

    <p>$\sqrt{3 \cdot k \cdot T / m}$</p> Signup and view all the answers

    What happens to the volume of a real gas compared to an ideal gas at higher pressures and lower temperatures?

    <p>The volume of a real gas is less than the volume of an ideal gas</p> Signup and view all the answers

    Which of the following is NOT a method of heat transfer discussed in the text?

    <p>Evaporation</p> Signup and view all the answers

    What is the main purpose of clothes in relation to heat transfer?

    <p>To reduce the amount of heat lost through radiation</p> Signup and view all the answers

    What did you learn about in addition to thermal energy and heat?

    <p>Both temperature changes and phase changes</p> Signup and view all the answers

    Which of the following is NOT mentioned as a factor affecting heat flow?

    <p>Evaporation</p> Signup and view all the answers

    What are the three methods of heat transfer mentioned in the text?

    <p>Conduction, convection, radiation</p> Signup and view all the answers

    What is the main reason given in the text to stay dressed whenever possible?

    <p>To reduce the amount of heat lost through radiation</p> Signup and view all the answers

    What does thermal energy refer to?

    <p>The total energy of a system due to the motion of particles</p> Signup and view all the answers

    What is the relationship between temperature changes and phase changes mentioned in the text?

    <p>Temperature changes and phase changes are both caused by heat flow</p> Signup and view all the answers

    Which of the following is NOT mentioned as a factor affecting heat transfer?

    <p>Evaporation</p> Signup and view all the answers

    What is the purpose of clothes in relation to heat transfer mentioned in the text?

    <p>To reduce the amount of heat lost through radiation</p> Signup and view all the answers

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