Thermal expansion and thermal contraction are two processes where the presence of heat will weather a rock, breaking it into smaller pieces. In which category of weathering would you expect to find thermal expansion and contraction? Why?
What will be an ideal response?
Answer: Mechanical weathering because the rock is being broken down, but not chemically altered.
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Migrating subtropical pressure zones generally produce dry summer conditions on the west side of continents because of
A) rising air and cold ocean currents. B) rising air and warm ocean currents. C) sinking air and cold ocean currents. D) sinking air and warm ocean currents.
Instructions: Choose one answer from each pair of selections. The sky appears blue because air molecules are LARGER | SMALLER than the wavelength of visible light and selectively scatter the shorter wavelengths
How did the density and buoyancy of the materials that formed Earth affect its internal structure?
a. Denser materials, such as nickel and iron, pushed their way up to the Earth's surface and became it's crust, whereas less dense, more buoyant materials such as silicon and aluminum, were displaced down to the Earth's core. b. Denser materials, such as silicon and aluminum, pushed their way up to the Earth's surface and became its crust, whereas less dense, more buoyant materials such as nickel and iron, were displaced down to the Earth's core. c. Denser materials, such as nickel and aluminum, sunk to the Earth's center and became its core, whereas less dense, more buoyant materials such as iron and aluminum rose to the Earth's surface and became its primitive crust. d. Denser materials, such as nickel and iron, sank to the Earth's center and became its core, whereas less dense, more buoyant materials such as silicon and aluminum, rose to the Earth's surface and became its primitive crust. e. Denser materials, such as silicon and aluminum, sank to the Earth's center and became its core, whereas less dense, more buoyant materials such as nickel and iron rose to the Earth's surface and became its primitive crust.
Suppose a thick nimbostratus cloud contains ice crystals and cloud droplets all about the same size. The precipitation process most important in producing rain from this cloud is called the ____________________ process.?
Fill in the blank with correct word.