What gas is most directly responsible for the bends or decompression sickness that divers may experience?
NITROGEN
What is the MOST common term for the behavior of light where it appears to bend around small obstacles or the spreading out of waves as light passes through pinholes or slits?
DIFFRACTION
In a flame test, the presence of copper in a solution is evident by
what color flame? Is the flame
w) red
x) orange
y) indigo
z) blue-green
Z
What is the biological term most often used for the act of a cell engulfing?
PHAGOCYTOSIS
What is the collection of small rocky bodies, otherwise known as minor planets, 99.8 percent of whose orbits lie between the orbits of Mars and Jupiter?
Identify any one of the following 3 rocks, as igneous, metamorphic, or sedimentary: marble; pumice; conglomerate.
MARBLE = METAMORPHIC; PUMICE = IGNEOUS; CONGLOMERATE = SEDIMENTARY
What particle of an atom is most directly responsible for the emission of light when an atom is excited by electromagnetic radiation?
ELECTRON
Which of the following describes the orientation of bonds in an sp3
hybridized atom?
w)triagonal
x)linear
y)tetrahedral
z)planar
y
What is the common name for the product of human lachrymal (read as: LACK-reh-mal) glands?
TEARS
Which one of the Gas Giant planets emits the LEAST amount of energy?
URANUS
In what layer of Earth’s atmosphere do most meteors experience the most heating?
Mesosphere
By what factor will the gravitational attraction between two masses be multiplied, if the distance between their centers of mass remains the same, but the mass of one doubles?
2 TIMES
DJ - All proteins contain at least 5 specific elements. Four of them are carbon, oxygen, hydrogen, and nitrogen. What is the fifth element?
Sulphur
DJ - Name all of the following 4 substances that would typically be considered exocrine products: insulin; amylase; hemoglobin; epinephrine
Amylase
Multiple Choice: A comet's tail points in which direction?
w) toward the sun
x) toward the earth
y) behind the comet in its orbit
z) away from the sun
Z