Rocks, Socks, and Quasar Clocks
(ESS)
(ESS)
In what units of geologic time are periods divided?
Epochs
What is the term for isomers that are non-superimposable mirror images of each other?
Enantiomers
A water storage tank is 20 meters above a garden faucet. In kilopascals, what is the pressure at the faucet?
196
How many different human codons code for methionine?
One
If angle ABC is inscribed in a circle and measures 65 degrees, what is the degree measure of arc ABC?
230
Which of the following is an example of a porphyroblast? W) A fragment of country rock preserved in a granitic intrusion X) A well-preserved trilobite fossil in shale Y) A rock deposited on the seafloor from the melting of sea ice Z) A large garnet in a fine-grained metamorphic schist
W
What type of solid does carbon dioxide form?
Molecular solid
The Sun is approximately 400 times further away from the Moon than the Earth is. The Sun is also approximately 300,000 times more massive than the Earth. Given these values, and expressing your answer as a decimal to two significant figures, what is the ratio of the Sun's gravitational force on the Moon to Earth's gravitational force on the Moon?
1.9
Operant and classical conditioning are both examples of what form of learning?
Associative
What is the sum of the distinct prime factors of 924?
23
What quantity did Einstein add to his general theory of relativity to "hold back" universal expansion?
Cosmological constant, or lambda
What organic compound, which is planar and stabilized by extensive conjugation, has two resonance structures and chemical formula C6H6?
Benzene
A backpack weighs 20 newtons on Earth but only 4 newtons on a certain asteroid. In meters per second squared, what is the acceleration due to gravity on this asteroid?
1.96
A plant that is heterozygous for flower color is self-pollinated. What percentage of the offspring will be true-breeding?
50
Find the value of a for which the following vectors are parallel: 8i – 2j and ai + 12j.
-48
A certain asteroid is orbiting the Sun and has a semi- major axis of 2.5 astronomical units. To the nearest Earth-year, what is the orbital period of this asteroid?
4
Suppose that at a certain temperature, one mole of chlorine gas and one mole of PCl3 gas are placed in a 1-liter container, and then equilibrate to form 0.2 moles of PCl5 gas. What is the K-sub-C value for the gas-phase reaction PCl3 + Cl2 yields PCl5 at this temperature?
5/16
For a closed curve on a pressure-volume diagram, what specific thermodynamic quantity is best represented by the enclosed area inside the curve?
Work
Identify all of the following three statements that are true of mitosis: 1) The mitotic spindle begins to form during prophase; 2) Anaphase is the shortest phase of mitosis; 3) Centrosomes are pushed apart by lengthening microtubules.
All
What are the radius and the coordinates of the center of the circle with equation x2 – 8x + y2 + 22y + 87 = 0?
Radius 5sqrt2, center (4,-11)
What are the three stars in the summer triangle?
Deneb, Altair, and Vega
A balloon is inflated with 10 grams of helium. Under the same conditions, a second balloon is inflated to the same volume with nitrogen. To the nearest gram, what is the mass of nitrogen in the second balloon?
70
Identify all of the following three changes that would increase the capacitance of a parallel plate capacitor in a circuit: 1) Increasing the potential difference in the circuit; 2) Increasing the plate area; 3) Increasing the distance between plates.
2
What is the term for the "bead" in the "beads on a string" model of eukaryotic DNA?
Nucleosome
What is the slope-intercept equation of the line tangent to the graph of y=x3+x+4 at the point(1,6)?
y=4x+2