Science Praxis Practice Test Content Knowledge (5435) Practice Test

Which of the following best describes the principle of Occam's Razor in scientific theory?

The scientific method is important in research because it:

In scientific research, what is the role of a hypothesis?

Which term best describes a hypothesis that has been repeatedly tested and confirmed over time?

In the context of a scientific study, what does the term "validity" refer to?

What is the primary purpose of a double-blind experiment?

The term "falsifiability" in the context of scientific hypotheses refers to:

In the history of science, the transition from a geocentric to a heliocentric model of the solar system is an example of:

What is the significance of the peer review process in scientific research?

What does the term "empirical evidence" refer to in scientific research?

In a scientific experiment, what is the purpose of a control group?

What is the primary purpose of a longitudinal study in scientific research?

Which principle states that in the absence of contrary evidence, one should avoid making unnecessary assumptions?

The term "paradigm shift" in the context of scientific discovery is best described as:

In the context of scientific experimentation, what is the function of a dependent variable?

What property of a wave is directly proportional to its energy?

What is the primary cause of tides on Earth?

In an endothermic reaction, which of the following statements is true?

The Doppler Effect is used to determine which of the following in astronomical observations?

The Heisenberg Uncertainty Principle states that it is impossible to simultaneously determine with exact precision:

In an electrochemical cell, the anode is the electrode where:

Which of the following best describes the behavior of light in the photoelectric effect?

What is the primary difference between beta-minus and beta-plus decay in nuclear reactions?

In a chemical reaction, the principle of conservation of mass is best demonstrated by which of the following?

The phenomenon of 'capillary action' is primarily due to:

Which type of bond is formed by the sharing of electrons between atoms?

The phenomenon of superconductivity is characterized by:

The principle of wave-particle duality is primarily associated with which of the following phenomena?

In a reversible chemical reaction at equilibrium, what effect does increasing the concentration of reactants have?

In quantum field theory, what does the Higgs boson provide evidence for?

In a p-n junction semiconductor, the 'depletion region' is characterized by:

The concept of entropy is best described as:

Which phenomenon demonstrates the wave nature of electrons?

What principle does Pascal's law illustrate?

What is the primary factor that determines the phase of matter (solid, liquid, gas) at a given temperature and pressure?

What does the Rydberg formula calculate in atomic physics?

In quantum mechanics, the Pauli Exclusion Principle primarily applies to which of the following particles?

In a redox reaction, the substance that gains electrons is said to be:

What is the primary reason for the increase in atomic radius down a group in the periodic table?

In a solution, the solubility of a gas in a liquid is directly proportional to:

What type of wave is a sound wave?

Which of the following is a key characteristic of a chemical change?

Which of the following best describes a black hole?

What is the primary cause of the blue color of the sky?

What phenomenon is primarily responsible for the greenhouse effect on Earth?

In thermodynamics, an adiabatic process is one in which:

In a vacuum, all electromagnetic waves:

The 'Gibbs free energy' in a chemical reaction is used to determine:

In the context of wave optics, 'Young's double-slit experiment' demonstrated the:

What is demonstrated by the Michelson-Morley experiment?

What is the primary cause of seasonal changes on Earth?

The 'Casimir effect' is a phenomenon in quantum field theory that demonstrates:

Which law states that the internal energy of an ideal gas is solely a function of its temperature?

What phenomenon explains the bending of light when it passes from one medium to another?

The concept of 'quantum entanglement' in quantum mechanics implies that:

In optics, 'chromatic aberration' occurs due to:

Which process is primarily responsible for the energy production in stars?

Which physical principle explains the operation of a hydraulic lift system?

The 'Coriolis effect' is responsible for:

The phenomenon of 'critical mass' is associated with:

In the context of electromagnetism, Faraday's Law of Electromagnetic Induction states that:

The 'Stefan-Boltzmann law' is a principle in thermodynamics that relates:

What is the primary factor determining the spectral class of a star?

In electronics, a diode primarily functions to:

The 'Doppler Effect' in sound is observed as a change in:

Which of the following is a characteristic of passive transport in cells?

In the context of ecology, "carrying capacity" refers to:

In mammalian cells, which organelle is primarily responsible for the detoxification of drugs and poisons?

Which process describes the movement of water from the roots to the leaves of a plant?

In a food web, tertiary consumers are usually:

Which type of cell division results in daughter cells with half the number of chromosomes of the parent cell?

What is the primary function of chloroplasts in plant cells?

In a DNA molecule, the nitrogenous base adenine always pairs with which other base?

The term "endemic" refers to a species that:

In the Linnaean system of classification, which rank directly follows "Order"?

In the process of protein folding, what level of structure is characterized by the arrangement of amino acid side chains far apart in the primary sequence?

Which of the following best describes the principle of competitive exclusion in ecology?

Which process is primarily responsible for the genetic variation seen in gametes during sexual reproduction?

Which of the following describes the function of the enzyme telomerase?

In ecological terms, a "keystone species" is best described as:

In a typical ecosystem, which trophic level has the greatest biomass?

Which principle in biology explains why water moves up a plant from the roots to the leaves against gravity?

The biological concept of "fitness" is best defined as:

In genetics, the term "pleiotropy" refers to:

What type of biomolecule is an enzyme?

Which of the following best describes the role of ribosomes in a cell?

Which biological process is directly responsible for the high levels of genetic variability seen in sexually reproducing populations?

Autotrophs differ from heterotrophs in that autotrophs:

What is the primary role of the mitochondria in eukaryotic cells?

In the context of animal behavior, the term "imprinting" refers to:

In a DNA molecule, the nitrogenous base adenine always pairs with which other base?

What is demonstrated by the Michelson-Morley experiment?

The most abundant gas in Earth's atmosphere is:

What phenomenon causes the Earth's lithosphere to move?

Which layer of Earth's atmosphere contains the ozone layer?

Which type of rock is typically formed by the cooling and solidification of magma or lava?

The Ring of Fire is associated with:

Which type of cloud is most commonly associated with thunderstorms?

The K-T boundary is significant in Earth's geological history because it provides evidence for:

What is the primary cause of tides on Earth?

In the context of geological time scales, what is an eon?

What causes the phenomenon of the Northern and Southern Lights (Aurora Borealis and Aurora Australis)?

Which gas is most responsible for the greenhouse effect in Earth's atmosphere?

What is the primary driver of the Earth's water cycle?

What is the primary cause of seasonal changes on Earth?

What is the primary process by which stars generate energy?

What is the term for the point on the Earth's surface directly above the focus of an earthquake?

The hypothesis of continental drift was first proposed by:

What is the primary cause of ocean currents?

The theory of plate tectonics explains the movement of Earth's lithosphere by:

Which layer of the Earth lies directly below the crust?

The term "aphelion" refers to:

In Earth science, the term "subduction" refers to:

What causes the red color of Mars?

What are the most common elements in the Earth's crust?

In the context of Earth's geological history, the term "Precambrian" refers to:

What is the primary mechanism driving the hydrological (water) cycle on Earth?

The primary cause of tsunamis is usually:

The precautionary principle in environmental science advocates for:

In the context of climate change, the term "mitigation" refers to:

The primary goal of the Paris Agreement within the United Nations Framework Convention on Climate Change is to:

The concept of "Technological Singularity" refers to a point in time when:

In the field of biotechnology, "Golden Rice" is engineered to address the deficiency of:

What is the main purpose of conducting a Life Cycle Assessment (LC

The term "carbon footprint" refers to:

The concept of "sustainable development" primarily focuses on:

The primary goal of the Clean Air Act, enacted in the United States in 1970, is to:

The main environmental concern associated with hydraulic fracturing (fracking) is:

The primary purpose of the Kyoto Protocol, an international treaty, is to:

In the context of digital technology, the term "Big Data" refers to:

The primary environmental concern with the use of genetically modified organisms (GMOs) in agriculture is:

The primary concern of the "Digital Divide" is:

The concept of "Circular Economy" primarily focuses on:

Which of the following best describes the primary ethical concern associated with the use of CRISPR-Cas9 gene-editing technology in humans?

The primary ethical concern in the use of nuclear energy is related to: