Why does a heated jar lid often loosen more readily?
A) Added heat goes into the liquid-to-vapor change B) Metal conducts heat away from skin faster C) Condensation releases latent […]
Every Day Science, Scientific Reasons
Scientific Reasons
Every Day Science, Scientific Reasons
Why does a long organ pipe generally sound lower than a shorter similar pipe?
A) Separated panes and the air gap reduce vibration transfer B) Too much current can overheat wiring C) Rubber resists […]
Every Day Science, Scientific Reasons
Why does a long thin wire have more resistance than a short thick one of the same metal?
A) Sound requires a material medium to travel B) Solid material can carry mechanical vibrations C) Greater length and smaller […]
Every Day Science, Scientific Reasons
Why does a metal spoon feel colder than a wooden spoon at the same room temperature?
A) Metal has a lower room temperature B) Wood emits more light C) Wood has no heat capacity D) Metal […]
Every Day Science, Scientific Reasons
Why does a mobile phone use radio waves to communicate?
A) The open switch breaks the current path B) Electromagnetic waves can carry encoded signals through air C) Changing magnetic […]
Every Day Science, Scientific Reasons
Why does a pan handle made of wood usually heat more slowly than the pan?
A) Metal wires expand as temperature rises B) Wood conducts heat less readily than metal C) Trapped air slows heat […]
Every Day Science, Scientific Reasons
Why does a passing ambulance siren sound higher as it approaches?
A) It responds to the magnet's field B) The Doppler effect raises the observed frequency C) Each bulb has a […]
Every Day Science, Scientific Reasons
Why does a plane mirror reverse left and right in the usual description?
A) Fewer light rays reach the edge from different directions B) The image reverses front-to-back relative to the mirror C) […]
Every Day Science, Scientific Reasons
Why does a prism produce colored bands from white light?
A) Air scatters shorter visible wavelengths more strongly B) The Moon's dark shadow covers a limited surface track C) It […]
Every Day Science, Scientific Reasons
Why does a rainbow form when sunlight interacts with raindrops?
A) Only magnetic attraction B) Only conduction C) Refraction, internal reflection and dispersion D) Only evaporation Answer: C Explanation: Raindrops […]