Round #10 Flashcards
1) Energy – Short Answer Scientists at Oak Ridge National Lab have developed a method to
use nanoscale spikes of carbon atoms to reduce gaseous nitrogen to what colorless, pungent gas
important in the manufacturing of fertilizer?
ANSWER: AMMONIA
1) Energy – Multiple Choice DOE researchers at Idaho National Lab are developing practical
methods to reduce the cost of biodiesel production. From which of the following stocks is
biodiesel made?
W) Corn
X) Wheat
Y) Vegetable oil
Z) Algae
ANSWER: Y) VEGETABLE OIL
2) Earth and Space – Short Answer What mechanism of heat transfer in the mantle drives
plate tectonics?
ANSWER: CONVECTION
2) Earth and Space – Short Answer Identify all of the following substances that would be able
to scratch the mineral apatite: 1) Fluorite; 2) Quartz; 3) Gypsum.
ANSWER: 2
3) Life Science – Short Answer What is the term for a rod-shaped bacterium?
ANSWER: BACILLUS (ACCEPT: BACILLI)
3) Life Science – Multiple Choice Which of the following hormones requires iodine for its
synthesis?
W) Thyroid-stimulating hormone
X) Thyroxine [thigh-ROX-in]
Y) Luteinizing [LOO-tin-eye-zing] hormone
Z) Testosterone
ANSWER: X) THYROXINE
4) Math – Short Answer Calculate the mean of the following 4 numbers: 12, 18, 30, 20
ANSWER: 20
4) Math – Short Answer To the nearest whole number, what is the area of a circle with
circumference 20?
ANSWER: 32
5) Physical Science – Multiple Choice The pH scale can be used to quantify which of the
following properties of a solution?
W) Saturation
X) Basicity [bay-SIH-sid-ee]
Y) Boiling point
Z) Osmolarity [oz-mow-LAIR-it-ee]
ANSWER: X) BASICITY
5) Physical Science – Short Answer After Rutherford’s experiments in 1918, scientists were
confident that the atom was composed of what two particles?
ANSWER: PROTONS AND ELECTRONS (ACCEPT IN ANY ORDER)
6) Earth and Space – Multiple Choice Which of the following star masses, given in solar
masses, is closest to the minimum amount of mass needed to form a black hole?
W) 3
X) 10
Y) 18
Z) 25
ANSWER: W) 3
6) Earth and Space – Short Answer Order the following four star colors in decreasing order of
related surface temperature: 1) Yellow; 2) White; 3) Red; 4) Blue.
ANSWER: 4, 2, 1, 3
7) Energy – Short Answer Scientists at SLAC National Accelerator Lab are studying
superconducting materials using computational modeling. In these materials, Cooper pairs form
between what particles to allow the conduction of currents?
ANSWER: ELECTRON
7) Energy – Short Answer Scientists at Pacific Northwest National Lab are supercooling
liquid water to 136 kelvins, where it freezes extremely quickly to generate a glass-like ice. What
is this temperature to the nearest degree Celsius?
ANSWER: –137
8) Math – Short Answer What is the slope of the line with equation 3x + 5y = –30?
ANSWER: –3/5 (ACCEPT: –0.6)
8) Math – Short Answer Simplify the fraction with numerator 2 + √2 and denominator 2 – √2.
ANSWER: 3 + 2√2 (ACCEPT: 2√2 + 3)
9) Life Science – Short Answer What type of tissue gives flexibility and elasticity to
structures such as the ear and nose?
ANSWER: CARTILAGE
9) Life Science – Short Answer Identify all of the following three animals that typically have
an exoskeleton: 1) Lobster; 2) Tuna; 3) Ant.
ANSWER: 1, 3