Round #3 Flashcards
Set cards to memorize. (46 cards)
1) Math – Short Answer Simplify the expression x times open parenthesis 2xy2 close
parenthesis squared.
ANSWER: 4x3
y4
1) Math – Short Answer From a point 20 feet from the base of a tree, the angle of elevation to
the top is 60 degrees. To the nearest foot, what is the height of the tree?
ANSWER: 35
2) Life Science – Short Answer Mushrooms are parts of organisms that are contained in what
kingdom of life?
ANSWER: FUNGI (DO NOT ACCEPT: FUNGUS)
2) Life Science – Short Answer What group of airborne chemicals do insects use to
communicate with each other?
ANSWER: PHEROMONES
3) Physical Science – Short Answer When nitric acid and sodium hydroxide react, the
products are a salt and what other compound?
ANSWER: WATER
3) Physical Science – Short Answer What is the oxidation state of hydrogen atoms in
ammonia?
ANSWER: +1 (ACCEPT: 1)
4) Energy – Short Answer Researchers at Oak Ridge National Lab have successfully
simulated an atomic nucleus using a quantum computer. From these calculations, they were able
to extract the binding energy of a deuteron, the bound state of what two subatomic particles?
ANSWER: PROTON AND NEUTRON
4) Energy – Short Answer Scientists at Savannah River National Lab are researching novel
methods to store hydrogen gas. One such method is a physical storage process in which gas is
adsorbed onto glass microbeads. This adsorption creates a heterogenous [hetero-JEE-nee-us]
mixture of hydrogen and glass that is NOT a solution, but does display the Tyndall effect. What
is the general name for this type of mixture?
ANSWER: COLLOID
5) Earth and Space – Multiple Choice Which of the following geologic structures forms from
sediment deposited at the mouth of a river?
W) Fjord
X) Delta
Y) Levee
Z) Berm
ANSWER: X) DELTA
5) Earth and Space – Short Answer Rhyolitic [rye-oh-LIT-ik] lavas have a chemical
composition identical to what intrusive igneous rock?
ANSWER: GRANITE
6) Physical Science – Short Answer The specific gravity of a solid or a liquid is defined as its
density compared to that of what substance?
ANSWER: WATER
6) Physical Science – Short Answer You want to hide your gold in a bottle that you plan to let
sink in a freshwater lake. If the bottle has a mass of 105 grams and a total volume of 1 liter, and
the gold comes in nuggets of 10 grams each, what is the minimum number of nuggets you need
to put in the bottle before it will sink?
ANSWER: 90
7) Energy – Short Answer Researchers at Princeton Plasma Physics Lab are studying a
nuclear reaction that involves deuterium [doo-TEER-ee-um] and tritium as reactants. What
general type of nuclear reaction is this?
ANSWER: FUSION (ACCEPT: NUCLEAR FUSION)
7) Energy – Short Answer Scientists at Princeton Plasma Physics Lab are studying magnetic
reconnection, a process that can occur in what phase of matter?
ANSWER: PLASMA
8) Life Science – Short Answer Many people suffer from anemia because they lack what
metal that is a component of hemoglobin?
ANSWER: IRON
8) Life Science – Multiple Choice Microscopic zooplankton [ZOH-oh-plank-ton] can best be
classified as which of the following trophic levels?
W) Decomposers
X) First-level carnivores
Y) Herbivores
Z) Tertiary [TUR-shee-ary] carnivores
ANSWER: Y) HERBIVORES
9) Earth and Space – Short Answer What adjective, meaning Earth-like, is used to refer to the
four inner planets?
ANSWER: TERRESTRIAL (ACCEPT: TERRESTRIAL PLANETS)
9) Earth and Space – Short Answer Identify all of the following three statements that are true
regarding the Moon’s formation: 1) It was a captured asteroid; 2) It formed at the same time as
Earth; 3) It contains material that used to be part of Earth.
ANSWER: 3
10) Physical Science – Short Answer What is the term for the heat required to change the
phase of a solid to a liquid?
ANSWER: HEAT OF FUSION (ACCEPT: ENTHALPY OF FUSION)
10) Physical Science – Short Answer Lithium has two stable isotopes and has an atomic mass of 6.941 amu. How many neutrons do most lithium nuclei possess?
ANSWER: FOUR
11) Math – Multiple Choice Which of the following is a rational number?
W) √9
X) √10
Y) √11
Z) √12
ANSWER: W) √9
11) Math – Short Answer Six dogs have an average woofiness of 7. Another 8 dogs have a
woofiness of 4. To the nearest tenth, what is the average woofiness of both groups of dogs
combined?
ANSWER: 5.3
12) Life Science – Short Answer What plant vascular system transports nutrients and
carbohydrates throughout the plant?
ANSWER: PHLOEM
12) Life Science – Multiple Choice You press down on your arm and feel a pulse beating.
From which of the following types of blood vessels is the pulse originating?
W) Vein
X) Artery
Y) Capillary
Z) Lymphatics
ANSWER: X) ARTERY
