AP Practice Test: Video 9 Answers (23 Questions) — Questions and Answers

Question 1: Which of the following actions did Congress take to reclaim authority that had been ceded to the executive branch?

Gramm-Rudman-Hollings Act
Gulf of Tonkin Resolution
Budget and Impoundment Control Act (Correct answer)
Presidential Disability Act

Correct answer: Budget and Impoundment Control Act

The Budget and Impoundment Control Act of 1974 was a landmark piece of legislation passed by Congress to reassert its power over the federal budget, particularly in response to presidential impoundment of funds. This act established the Congressional Budget Office (CBO) and created a new budget process, limiting the President's ability to refuse to spend appropriated money. It aimed to restore the balance of power between the legislative and executive branches regarding fiscal policy.

Question 2: Which provision of the Constitution specifically addresses the relationship between the federal government and the states?

Federalism (Correct answer)
Representation
Separation of powers
The Bill of Rights

Correct answer: Federalism

Federalism is a system of government where power is divided between a national (federal) government and various regional (state) governments. The U.S. Constitution establishes this division, outlining specific powers for the federal government while reserving others for the states, and some powers are shared concurrently. This structure ensures a balance of power and allows for both national unity and local autonomy.

Question 3: Which Supreme Court case established the principle of judicial review?

Gibbons v. Ogden
Roe v. Wade
Plessy v. Ferguson
Marbury v. Madison (Correct answer)

Correct answer: Marbury v. Madison

Marbury v. Madison (1803) established the courts' power to review laws.

Question 4: Which type of federalism is characterized by intertwined federal and state responsibilities, often called 'marble cake' federalism?

Cooperative federalism (Correct answer)
Dual federalism
Fiscal federalism
Layer cake federalism

Correct answer: Cooperative federalism

Cooperative federalism blends state and national functions like a marble cake.

Question 5: What is the role of the central nervous system in behavior?

It controls reflexes and involuntary actions.
It helps in processing sensory information (Correct answer)
It regulates metabolic functions.
It is not involved in regulating behavior.

Correct answer: It helps in processing sensory information

The central nervous system (CNS), comprising the brain and spinal cord, plays a fundamental role in behavior by processing sensory information. It integrates input from all senses, interprets it, and then generates appropriate responses, including thoughts, emotions, and motor commands. This intricate processing allows individuals to perceive their environment and interact with it purposefully.

Question 6: How does the hypothalamus regulate behavior?

It controls language processing.
It is involved in memory and learning.
It regulates basic bodily functions related to survival (Correct answer)
It controls movement coordination.

Correct answer: It regulates basic bodily functions related to survival

The hypothalamus is a vital brain structure located at the base of the brain, playing a central role in maintaining homeostasis. It regulates essential bodily functions critical for survival, such as body temperature, hunger, thirst, sleep-wake cycles, and sexual behavior. By controlling hormone release and influencing the autonomic nervous system, the hypothalamus directly impacts our most fundamental physiological and behavioral drives.

Question 7: What is the function of the sympathetic nervous system?

It calms the body down during stress.
It helps in digestion.
It prepares the body for action (Correct answer)
It regulates sleep patterns.

Correct answer: It prepares the body for action

The sympathetic nervous system is a division of the autonomic nervous system responsible for the body's 'fight or flight' response. When activated, it rapidly prepares the body to respond to perceived threats or stress by increasing heart rate, dilating pupils, and redirecting blood flow to muscles. This physiological arousal enables quick reactions and heightened alertness, preparing the body for action.

Question 8: How do genetic factors influence behavior?

Genetic factors only affect physical traits.
Genetics influence cognitive abilities and personality (Correct answer)
Genetics control emotions directly.
Genetic factors have no influence on behavior.

Correct answer: Genetics influence cognitive abilities and personality

Genetic factors contribute significantly to individual differences in behavior by influencing brain structure, neurotransmitter systems, and cognitive processes. While not deterministic, genes can predispose individuals to certain personality traits, temperaments, and cognitive abilities, such as intelligence or susceptibility to mental health conditions. These genetic influences interact complexly with environmental factors to shape an individual's overall behavior.

Question 9: Which of the following best describes the impact of European colonization on Native American populations?

Population grew due to shared technologies
Population declined due to disease and conflict (Correct answer)
They were largely unaffected
They relocated voluntarily to new areas

Correct answer: Population declined due to disease and conflict

European colonization had a devastating impact on Native American populations, primarily due to the introduction of Old World diseases like smallpox, to which Native Americans had no immunity. Additionally, violent conflicts over land and resources, forced displacement, and enslavement further contributed to a catastrophic demographic decline.

Question 10: Which immigrant group faced significant restrictions under the 1882 Chinese Exclusion Act?

Scandinavian immigrants
German immigrants
Irish immigrants
Chinese immigrants (Correct answer)

Correct answer: Chinese immigrants

The Chinese Exclusion Act of 1882 was the first major law in U.S. history to explicitly prohibit immigration for a specific ethnic group. It effectively banned Chinese laborers from entering the country and prevented those already here from becoming citizens, reflecting widespread nativist and anti-Chinese sentiment at the time.

Question 11: Which legislation had the greatest impact on migration patterns in the United States after 1862?

Chinese Exclusion Act
Indian Removal Act
Homestead Act (Correct answer)
Missouri Compromise

Correct answer: Homestead Act

Passed in 1862, the Homestead Act was a pivotal piece of legislation that encouraged westward migration by offering 160 acres of public land to any citizen or intended citizen who would live on it, cultivate it for five years, and pay a small filing fee. This act spurred massive settlement of the Great Plains and significantly shaped American demographic patterns after the Civil War.

Question 12: What is reduction in a redox reaction?

Loss of electrons.
Gain of electrons. (Correct answer)
Loss of protons.
Gain of protons.

Correct answer: Gain of electrons.

Reduction in a redox reaction is defined as the gain of electrons by a chemical species. This process leads to a decrease in the oxidation state of the atom or ion undergoing reduction. The mnemonic OIL RIG helps remember this: Reduction Is Gain (of electrons).

Question 13: What does the electrode potential indicate?

The tendency of a substance to gain or lose electrons. (Correct answer)
The likelihood of a substance to donate protons.
The temperature at which a reaction occurs.
The amount of heat released in a reaction.

Correct answer: The tendency of a substance to gain or lose electrons.

The electrode potential indicates the tendency of a substance to either gain electrons (be reduced) or lose electrons (be oxidized). A higher positive reduction potential signifies a greater tendency for reduction, while a more negative reduction potential indicates a greater tendency for oxidation. This value is crucial for predicting the spontaneity of redox reactions.

Question 14: What is the standard electrode potential for the hydrogen ion (H⁺) half-cell?

0.50 V.
-1.00 V.
1.00 V.
0.00 V. (Correct answer)

Correct answer: 0.00 V.

The standard electrode potential for the hydrogen ion (H⁺) half-cell, also known as the Standard Hydrogen Electrode (SHE), is conventionally assigned a value of 0.00 V. This serves as the reference point against which the electrode potentials of all other half-cells are measured and compared. It allows for the determination of relative tendencies for reduction or oxidation.

Question 15: What is enthalpy (ΔH)?

The total energy of the system.
The heat content of a system. (Correct answer)
The change in pressure.
The energy released during a chemical reaction.

Correct answer: The heat content of a system.

Enthalpy (ΔH) is a thermodynamic property that represents the total heat content of a system at constant pressure. While it is often used to describe the heat released or absorbed during a chemical reaction (enthalpy change), it fundamentally refers to the internal energy of the system plus the product of its pressure and volume.

Question 16: What is the second law of thermodynamics?

Energy cannot be transferred as heat.
Entropy of an isolated system increases over time. (Correct answer)
Entropy of an isolated system decreases over time.
The total energy of the universe is constant.

Correct answer: Entropy of an isolated system increases over time.

The second law of thermodynamics states that the total entropy (disorder or randomness) of an isolated system can only increase over time, or remain constant in ideal reversible processes. It implies that natural processes tend towards a state of greater disorder and that heat cannot spontaneously flow from a colder body to a hotter body.

Question 17: What is the relationship between temperature and entropy?

Temperature has no effect on entropy.
As temperature decreases, entropy increases.
As temperature increases, entropy increases. (Correct answer)
As temperature increases, entropy decreases.

Correct answer: As temperature increases, entropy increases.

Entropy is a measure of the disorder or randomness of a system. As temperature increases, particles gain more kinetic energy, leading to increased molecular motion and a greater number of possible microstates. This increased freedom of movement and distribution of energy results in a higher degree of disorder, hence an increase in entropy.

Question 18: What does the first law of thermodynamics state?

Energy is conserved in all processes. (Correct answer)
Energy can be created and destroyed.
Energy is lost as heat.
Energy can only be transferred by work.

Correct answer: Energy is conserved in all processes.

The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed in an isolated system. It can only be transferred or transformed from one form to another. This means the total energy of the universe remains constant.

Question 19: How does atomic radius change across a period in the periodic table?

It increases across a period.
It decreases across a period. (Correct answer)
It stays the same across a period.
It fluctuates without a clear trend.

Correct answer: It decreases across a period.

Across a period, the number of protons in the nucleus increases, leading to a stronger positive charge. This increased nuclear charge pulls the valence electrons closer to the nucleus, effectively reducing the atomic radius. Although electrons are added to the same principal energy level, the increasing nuclear pull dominates, causing the atoms to shrink.

Question 20: What does electronegativity refer to?

The number of protons in an atom.
The energy required to remove an electron.
An atom's ability to attract electrons in a bond. (Correct answer)
The number of neutrons in an atom.

Correct answer: An atom's ability to attract electrons in a bond.

Electronegativity is a measure of an atom's inherent ability to attract shared electrons towards itself within a chemical bond. This property is crucial for determining the polarity of a bond and, consequently, the overall polarity of a molecule. Elements with high electronegativity, like fluorine, strongly pull bonding electrons towards themselves.

Question 21: What is the role of quantum numbers in describing atomic structure?

To calculate the molecular weight.
To describe the properties of atomic orbitals and electrons. (Correct answer)
To determine the number of neutrons.
To determine the atomic number.

Correct answer: To describe the properties of atomic orbitals and electrons.

Quantum numbers are a set of four numbers that uniquely describe the state of an electron in an atom. They specify the electron's energy level (principal quantum number), the shape of its orbital (azimuthal), its orientation in space (magnetic), and its spin (spin quantum number). Together, they provide a comprehensive description of an electron's probable location and energy within an atom.

Question 22: What is the electron configuration of oxygen (O)?

1s² 2p⁶.
1s² 2s² 2p⁶.
1s² 2s² 3p⁶.
1s² 2s² 2p⁴. (Correct answer)

Correct answer: 1s² 2s² 2p⁴.

Oxygen (O) has an atomic number of 8, meaning a neutral oxygen atom has 8 electrons. Following the Aufbau principle, these electrons fill the lowest energy orbitals first: 2 electrons in the 1s orbital, 2 in the 2s orbital, and the remaining 4 electrons in the 2p orbital. Therefore, its electron configuration is 1s² 2s² 2p⁴.

Question 23: What is the periodic trend for electron affinity?

Electron affinity decreases across a period.
Electron affinity increases across a period. (Correct answer)
Electron affinity stays the same across a period.
Electron affinity decreases down a group.

Correct answer: Electron affinity increases across a period.

Electron affinity generally increases across a period because the effective nuclear charge increases, pulling incoming electrons more strongly. Atoms with a stronger nuclear attraction for electrons will release more energy when an electron is added, indicating a higher (more negative) electron affinity. Halogens, for instance, have high electron affinities as they readily accept an electron to achieve a stable octet.

AP Practice Test: Video 9 Answers (23 Questions)

Which of the following actions did Congress take to reclaim authority that had been ceded to the executive branch?

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