A plunging fold is one in which:
a. the fold axis is horizontal.
b. the limbs of the fold always bend downward.
c. the fold axis is at an angle to the horizontal.
d. the limbs of the fold always bend upward.
Answer: C
Physics
- White smoker chimneys at hydrothermal vents are different from black smoker chimneys because:
- The disk-shaped cloud that formed our solar system is called the solar nebula because:
- The preferred theory of the origin of the universe is:
- According to presently preferred theory, the universe:
- Which of the following statements about the Moon is correct?
- During differentiation of Earth, which chemical element concentrated in the center of the Earth?
- Ancient microbial mats preserved in the rock record are called:
- Big Bang theory refers to the:
- Which of the following types of meteorites have a composition most similar to the Earth's core and mantle?
- First evidence of photosynthesis coincides with:
- Milankovitch cycles refer to periodic variations in:
- The CCD stands for:
- In ocean circulation patterns, water leaving the equator and moving north is saltier due to:
- Areas near the equator are warmer than areas near the poles because:
- The CCD refers to:
- Variations in Earth's orbit and rotation cause:
- Red Clays are deep sea sediments that are derived from:
- How does snow cover affect the temperature of an area compared to an area of the same temperature with exposed rock?
- Changes in obliquity can affect Earth's climate by
- Themohaline circulation describes the:
- Siliceous oozes in seafloor sediments indicate areas where:
- An example of a proxy record used by paleoclimatologists is:
- The best records of temperature variation in the last half-million years come from:
- The major nutrients for primary production in order of concentration is
- The tropics, directly adjacent to the equator, typically have ______________ due to convergence and __________ due to divergence