True or False — Everyday Science
Five medium-difficulty true/false style science statements about everyday phenomena; pick whether each statement is true or false and learn why.
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Quiz Questions & Answers
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Question 1: Cold objects make nearby air colder by 'pulling' heat out of it.
False — cold doesn't pull heat; heat flows from warmer to cooler
Both — depends on humidity
True — cold objects actively extract heat from surroundings
Question 2: You feel colder in wet clothes because evaporation removes heat from your skin.
False — wet clothes only weigh you down, not change temperature
False — wet clothes trap warm air and make you warmer
True — evaporation uses thermal energy from your skin causing cooling
Question 3: Opening a refrigerator often makes the kitchen warmer overall.
False — refrigerators remove heat and cool the room
True — the fridge's compressor works harder and releases extra heat
False — opening briefly has no effect on room temperature
Question 4: You can tell if water is boiling by bubbles alone; bigger bubbles always mean hotter water.
False — bubble size varies with dissolved gases and surface conditions
True — bubbles directly measure boiling intensity
True — larger bubbles mean higher temperature
Question 5: Hand warmers produce heat via a chemical reaction that requires oxygen exposure.
True — many rely on iron oxidation needing air to release heat
False — heat comes from dissolving salts without oxygen
False — all hand warmers use batteries or electrical heating