Praxis Science (5005) Domain 3: Physical Science Welcome to your Praxis Science (5005) Domain 3: Physical Science 1. Praxis Science: Physical Science Which principle explains why a boat made of steel floats on water? A. Archimedes' principle B. Pascal's law C. Bernoulli's principle D. Newton's third law of motion None 2. Praxis Science: Physical Science What occurs in a redox reaction where reduction takes place? A. The substance gains protons. B. The substance loses electrons. C. The substance gains electrons. D. The substance loses neutrons. None 3. Praxis Science: Physical Science What type of bond is formed when electrons are shared equally between atoms? A. Ionic bond B. Covalent bond C. Metallic bond D. Polar bond None 4. Praxis Science: Physical Science What is the primary cause of seasons on Earth? A. The distance of Earth from the Sun B. The Sun's varying intensity C. Earth's rotation on its axis D. The tilt of Earth's axis None 5. Praxis Science: Physical Science In a vacuum, if a feather and a hammer are dropped simultaneously from the same height, what will happen? A. The hammer will land first. B. The feather will land first. C. They will land at the same time. D. Neither will land due to the lack of air. None 6. Praxis Science: Physical Science What phenomenon occurs when light waves bend as they pass from one medium into another? A. Reflection B. Diffraction C. Refraction D. Interference None 7. Praxis Science: Physical Science Which type of electromagnetic radiation has the shortest wavelength? A. Radio waves B. Infrared radiation C. Visible light D. Gamma rays None 8. Praxis Science: Physical Science What is the primary difference between kinetic and potential energy? A. Kinetic energy depends on position; potential energy depends on motion. B. Kinetic energy is always greater than potential energy. C. Kinetic energy depends on motion; potential energy depends on position. D. Potential energy is only present in living organisms. None 9. Praxis Science: Physical Science What happens to the pressure of a gas when its volume is decreased while its temperature remains constant? A. The pressure decreases. B. The pressure remains constant. C. The pressure increases. D. The pressure first increases, then decreases. None 10. Praxis Science: Physical Science In an electrical circuit, what is the function of a resistor? A. To store electrical energy B. To increase voltage C. To control and limit the flow of electrical current D. To convert electrical energy to light energy None 11. Praxis Science: Physical Science What principle explains why ice floats in water? A. The solid phase of water is denser than its liquid phase. B. The solid phase of water is less dense than its liquid phase. C. The molecular bonds in ice are stronger than in liquid water. D. Ice absorbs more heat than water. None 12. Praxis Science: Physical Science Which law of thermodynamics states that the total entropy of an isolated system can never decrease over time? A. First Law of Thermodynamics B. Second Law of Thermodynamics C. Third Law of Thermodynamics D. Zeroth Law of Thermodynamics None 13. Praxis Science: Physical Science In a chemical reaction, what role does a catalyst play? A. It increases the reaction temperature. B. It gets consumed in the reaction. C. It lowers the activation energy of the reaction. D. It changes the products of the reaction. None 14. Praxis Science: Physical Science What property of sound waves determines pitch? A. Amplitude B. Wavelength C. Frequency D. Speed None 15. Praxis Science: Physical Science What phenomenon occurs when the speed of a fluid increases as the cross-sectional area of the flow decreases? A. Bernoulli's principle B. Pascal's law C. Boyle's law D. Archimedes' principle None 16. Praxis Science: Physical Science What is the primary function of a semiconductor in electronic devices? A. To store electrical charge B. To allow or block electrical current under different conditions C. To convert electrical energy into mechanical energy D. To increase electrical resistance None 17. Praxis Science: Physical Science What is the primary cause of tides on Earth? A. The rotation of the Earth on its axis B. The gravitational pull of the Sun and the Moon on Earth's oceans C. Changes in atmospheric pressure D. The Earth's magnetic field None 18. Praxis Science: Physical Science In physics, what term describes the amount of matter in an object? A. Weight B. Density C. Mass D. Volume None 19. Praxis Science: Physical Science Which optical phenomenon creates a spectrum of colors when light passes through a prism? A. Diffraction B. Refraction C. Dispersion D. Reflection None 20. Praxis Science: Physical Science What is the primary function of a capacitor in an electrical circuit? A. To store and release electrical energy B. To convert electrical energy into heat C. To control the flow of electrical current D. To increase electrical resistance None 1 out of 20 Time is Up! Time's up
