Which of the following best describes the Reverse Osmosis Method for desalination?
A) A current is run through positive and negative electrodes in freshwater separated by semipermeable membranes from seawater.
B) Large icebergs are brought to coastal waters off countries that need freshwater where they are melted.
C) Saltwater is boiled and the water vapor is passed through a cooling condenser, where it condenses as freshwater.
D) Seawater is frozen and thawed multiple times, with the salts washed from the ice between each thawing.
E) Water on the salty side of a semipermeable membrane is pushed under high pressure through the membrane to the freshwater side.
E
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The hottest places on Earth are not found near the equator in tropical wet climates but rather in arid climate regions. Why?
What will be an ideal response?
Using a globe and your atlas or other world map, locate three cities that are located at approximately the 23rd parallel in the Northern Hemisphere; note their location in degrees (and minutes, if your map is detailed enough to estimate minutes). Use the globe first, then refer to the atlas maps to better determine specific latitudes. Be sure and list their country names as well.
- City and Country Name
- Longitude (degrees and minutes, if possible)
Choose the option that matches the pore particles with the cement it forms upon reaction with water
A) Feldspar grains become hematite; iron-silicate grains form quartz. B) Silicate grains become clay; iron-oxide grains form hematite. C) Pyroxene grains become clay; carboN-silicate grains form hematite. D) Feldspar grains become clay; iron-silicate grains form hematite.
Which of the following is the fuel for continental drift and plate tectonics?
A) Chemical reactions in Earth's core B) Solar energy C) Nuclear fusion D) Radioactive decay