Challenge your understanding of basic physics concepts with these easy, engaging questions. See how much you know about everyday science facts and fundamental principles.
What is the SI unit of force commonly used in physics problems?
Explanation: The correct unit for force in the SI system is the Newton. Joule is the unit of energy, Pascal is for pressure, and Kelvin measures temperature, making them less appropriate for force measurements.
What happens when white light passes through a prism?
Explanation: A prism refracts, or bends, white light, often splitting it into a spectrum of colors. Absorption and reflection are different optical phenomena, and vibration does not describe the effect a prism has on light.
What type of energy does a stretched rubber band have?
Explanation: A stretched rubber band stores potential energy due to its position. Kinetic energy is related to movement; thermal energy concerns heat; nuclear energy involves atomic processes, making them incorrect here.
Which device is used to measure atmospheric pressure?
Explanation: A barometer is designed to measure atmospheric pressure. Thermometers measure temperature, voltmeters measure electric potential, and capacitors store electrical energy, so only barometer fits the question.
What type of wave is sound in air?
Explanation: Sound in air is a longitudinal wave because particle vibration occurs parallel to the direction of wave travel. Transverse waves have perpendicular vibration, radio and gamma rays are different electromagnetic waves.
Which material reflects the most light among the options?
Explanation: White paper reflects most light due to its color. Black cloth absorbs more light, glass allows light to pass through, and aluminum may also reflect but is not specified as the best reflector here.
What is the main source of energy for the Sun?
Explanation: The Sun's primary energy comes from nuclear fusion, where hydrogen atoms combine to form helium. Combustion refers to burning, fission involves splitting atoms, and friction is unrelated to the Sun's energy.
What is the SI unit of temperature?
Explanation: Kelvin is the official SI unit for temperature measurement. Celsius and Fahrenheit are commonly used scales but not SI units; Hertz is the unit for frequency.
Which phenomenon explains why the sky appears blue during the day?
Explanation: Scattering causes the blue color of the sky, as blue light is scattered more than other colors. Reflection and absorption refer to different processes, and fusion is unrelated to this atmospheric effect.
Which force is primarily responsible for keeping planets in orbit around the Sun?
Explanation: Gravitational force keeps planets in orbit. Frictional, magnetic, and nuclear forces do not play a primary role in maintaining planetary orbits around the sun.