Earth Science
What is the period of semi-diurnal tides?
W) 11 hours and 22 minutes
X) 12 hours
Y) 12 hours and 25 minutes
Z) 13 hours and 5 minutes
Y) 12 hours and 25 minutes
What is the frequency of a wave with a velocity of 10 meters per second and wavelength of 20 meters? (F= V/WL)
W) 0.1 Hz
X) 0.5 Hz
Y) 5 Hz
Z) 10 Hz
X) 0.5 Hz
Bacteria are commonly used to produce which of the following?
W) Gelatin X) Wine
Y) Pasteurized milk Z) Vinegar
Z) Vinegar
A jar contains only red marbles and green marbles. If a marble is selected at random from the jar, the probability that a red marble will be selected is 2/3. If there are 36 green marbles in the jar, how many red marbles are there in the jar?
W) 18 X) 24
Y) 54 Z) 72
Z) 72
What fuel is used in a nuclear reactor?
W) Polonium-275
X) Radium-226
Y) Uranium -235
Z) Curium-258 [KYOOR-ee-uhm]
Y) Uranium -235
Which of the following margins is considered active?
W) Eastern North American
X) Western African
Y) Eastern Indian
Z) Northeastern Eurasian
Z) NORTHEASTERN EURASIAN
Which of the following is a force that will always decrease the efficiency of a mechanical system?
W) Gravity X) Spring force
Y) Magnetic force Z) Friction
Z) Friction
Many ducks have oils on their feathers so that their feathers do not get wet. What type of interaction is occurring between the feathers and water?
W) Hydrophobic X) Hygroscopic
Y) Hydrophilic Z) Heliophobic
W) Hydrophobic
For two particular numbers x and y, the values of x – y and 2x − y are consecutive odd integers in increasing order. What is the value of x?
W) -1
X) 0
Y) 1
Z) 2
Z) 2
Photovoltaic [foh-toh-vol-TAY-ik] solar trackers can track which of the following in order to further increase power production?
W) Azimuth angle [AZ-uh-muhth] X) Power angle
Y) Power factor Z) Declination angle
W) Azimuth angle [AZ-uh-muhth]
What ocean floor feature is found along the South Pacific Ocean that is not found along the South Atlantic Ocean?
W) Abyssal plain [uh-BIS-uhl]
X) Mid-ocean ridge
Y) Deep-ocean trench
Z) Continental shelf
Y) Deep-ocean trench
How many neutrons does fluorine-19 have?
W) 8
X) 9
Y) 10
Z) 11
Y) 10
A photosynthetic cell might have more of what organelle than a non-photosynthetic cell?
W) Peroxisomes [puh-ROK-suh-sohms]
X) Mitochondria [my-tuh-KON-dree-uh]
Y) Free ribosomes [RY-buh-sohms]
Z) Cytosol [SY-tuh-sol]
W) PEROXISOMES
r Casey poured sand into a box measuring 4 inches by 16 inches by 8 inches until it was completely full. She then dumped all the sand into a plastic cube and discovered that the cube held the exact same amount of sand. In inches, how long was the edge of the cube?
8
What element is being produced in abundance by the nuclear reaction in the Sun?
HELIUM
What is the term for the dark, broad plains on the surface of the Moon?
MARIA (ACCEPT: MARES)
Why does the pressure exerted by a gas against a sealed container increase as the temperature increases?
W) The gas molecules move faster and strike the container wall more frequently
X) The gas molecules gain more entropy and hence produce more pressure
Y) The gas molecules generate more collision energy
Z) The increased kinetic energy increases the rate of chemical reactions between gas particles
W) THE GAS MOLECULES MOVE FASTER AND STRIKE THE CONTAINER WALL MORE FREQUENTLY
Within the chloroplast, where do the light-dependent reactions and light-independent reactions occur, respectively?
THYLAKOID MEMBRANES (ACCEPT: THYLAKOID), STROMA
What is the tangent of angle A if the cosine of angle A measures 3/5 and the sine of angle A measures 4/5?
4/3 (ACCEPT: 1 1/3)
What is the theoretical maximum voltage that can be produced from a hydrogen fuel cell?
W) 0.41 volts per cell
X) 0.75 volts per cell
Y) 1.23 volts per cell
Z) 2.54 volts per cell
Y) 1.23 volts per cell
The lack of foraminiferal [fuh-ram-uh-NIF-er-uhl] and other carbonate oozes at depths greater than 4 kilometers is explained by which of the following?
W) Foraminifera or other shelled organisms cannot exist at this depth due to pressure
X) Deep sea decomposers break down carbonate shells
Y) Carbonate shells dissolve at depths below the carbonate compensation depth
Z) Hydrothermal vent activity at depths exceeding 4 km create highly acidic deep ocean environments, limiting the ability for organisms to live
Y) CARBONATE SHELLS DISSOLVE AT DEPTHS BELOW THE CARBONATE COMPENSATION DEPTH
The mass of most distant stars is estimated by astronomers by measuring which of the following?
W) The speed at which a star is rotating on its axis
X) The distance between Earth and the star
Y) The gravitation attraction of the star and nearby planetary objects
Z) The speed of light traveling from that star to Earth
Y) The gravitation attraction of the star and nearby planetary objects
What is the term for the process of breaking up a molecule with water?
HYDROLYSIS
For real values of n and k, which of the following expressions is equal to: 5^n * 5^k?
W) 5^(n+k) [5 raised to the power of the quantity n plus k]
X) 5^(nk) [5 raised to the power of the quantity n times k]
Y) 5^(n-k) [5 raised to the power of the quantity n minus k]
Z) 5^(n/k) [5 raised to the power of the quantity n over k]
W) 5^(n+k) [5 raised to the power of the quantity n plus k]
What mineral is used in its molten state as a necessary part of the Hall-Heroult process? (The process for smelting aluminium)
W) Cryolite [KRY-uh-lyt] X) Kaolin
Y) Bentonite Z) Malachite [MAL-uh-kyt]
W) Cryolite [KRY-uh-lyt]