Round #3 Flashcards
Set cards to memorize.
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
13) Physical Science – Short Answer The recoil that follows from the firing of a gun is a
direct result of the conservation of what quantity?
ANSWER: MOMENTUM (ACCEPT: LINEAR MOMENTUM)
13) Physical Science – Short Answer To two significant figures, how many grams are in
4 pounds of gold?
ANSWER: 1800
14) Math – Short Answer What is the surface area of a cube with edges of length 3?
ANSWER: 54
14) Math – Short Answer Solve the following equation for x: open parenthesis 3x – 7 close
parenthesis squared = 64.
ANSWER: –1/3 OR 5 (must give both answers)
15) Earth and Space – Multiple Choice Which of the following is a term for a high area of
land that separates one drainage basin from another?
W) Divide
X) Apex
Y) Peak
Z) Block mountain
ANSWER: W) DIVIDE
15) Earth and Space – Short Answer What type of earthquake body waves are longitudinal
waves and can therefore pass through liquids and solids?
ANSWER: P WAVES (ACCEPT: P, PRIMARY)
16) Math – Short Answer What is the sum of the two expressions 2a + 9b and 3a – 8b?
ANSWER: 5a + b (ACCEPT: b + 5a)
16) Math – Short Answer What is 9525% of 24?
ANSWER: 2286
17) Life Science – Short Answer What type of cells in mammals serves as the main carriers of
oxygen within the circulatory system?
ANSWER: ERYTHROCYTES (ACCEPT: RED BLOOD CELLS, RBC)
17) Life Science – Multiple Choice The malleus, incus, and stapes [STAY-peez] are small
bones that play a role in which of the following functions?
W) Hearing
X) Balance
Y) Locomotion
Z) Respiration
ANSWER: W) HEARING
18) Energy – Multiple Choice Lawrence Berkeley National Lab scientists have developed
ReACT, a new amino acid labeling technique. This technique can be used to study which of the
following biomolecules?
W) Proteins
X) Phospholipids
Y) DNA
Z) RNA
ANSWER: W) PROTEINS
18) Energy – Short Answer Researchers at Lawrence Berkeley National Lab are studying how
defects in the mixtures of multiple metals can change the properties of the mixture. Generally,
these researchers are studying solutions defined by metallic bonding character, which are given
what name in chemistry?
ANSWER: ALLOYS
19) Math – Short Answer Simplify the following expression: a8 times a3
ANSWER: a11
19) Math – Short Answer What is the smallest positive integer that has a remainder of 3 when
divided by 5, a remainder of 0 when divided by 2, and a remainder of 1 when divided by 3?
ANSWER: 28
20) Earth and Space – Short Answer What cataclysmic event is necessary for the creation of a
neutron star?
ANSWER: SUPERNOVA
20) Earth and Space – Multiple Choice Which of the following is a correct pairing of a layer
of the Sun’s atmosphere and its effective temperature?
W) Photosphere and 6,000 kelvins
X) Photosphere and 10,000 kelvins
Y) Corona and 6,000 kelvins
Z) Corona and 10,000 kelvins
ANSWER: W) PHOTOSPHERE AND 6,000 KELVINS
21) Physical Science – Short Answer Astronomers and physicists believe that the universe’s
expansion is accelerating due to the action of what undiscovered form of energy that composes
73% of the universe’s mass-energy?
ANSWER: DARK ENERGY
21) Physical Science – Short Answer Consider a ball that is thrown at 20 meters per second at
an angle of 30 degrees to the horizontal. In meters per second, what is the horizontal velocity of
this ball during its flight?
ANSWER: 10√3
22) Life Science – Short Answer What is the term for unicellular organisms that lack a
nucleus?
ANSWER: PROKARYOTES
22) Life Science – Short Answer What is the principal pigment that plants use to absorb light
for photosynthesis?
ANSWER: CHLOROPHYLL
23) Earth and Space – Short Answer By definition, mafic [MAF-ik] rocks are rich in what two
elements?
ANSWER: IRON AND MAGNESIUM
23) Earth and Space – Short Answer If you see lightning and hear the thunder 15 seconds
later, then, to the nearest whole kilometer, how far away was the lightning strike?
ANSWER: 5
