Which indoor sport did James Naismith invent in 1891?
AnswerBasketball
Naismith created basketball as an indoor winter activity, using peach baskets as the first hoops.
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Indoor facts & stats
7 fact-checked facts about indoor spaces and home comfort, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Why does warm air tend to rise in a room?
AnswerIt is less dense than cooler air
Warm air expands and becomes less dense, so cooler air sinks beneath it and pushes it up.
Going deeper
Which unit measures how much visible light a bulb gives off?
AnswerLumens
Lumens measure light output; watts measure the power the bulb uses.
Which indoor sport did William G. Morgan invent in 1895?
AnswerVolleyball
Morgan created volleyball, first called mintonette, as a gentler indoor game.
Which colorless, odorless gas from burning fuel is detected by a home alarm?
AnswerCarbon monoxide
Carbon monoxide can build up from faulty heaters or engines, which is why CO alarms exist.
Expert level
A 'warm white' light bulb usually has a color temperature of about what?
Answer2,700 K
Warm white bulbs are around 2,700 K, while cooler daylight-style bulbs are near 5,000 to 6,500 K.
Why does a ceiling fan make a room feel cooler without lowering the air temperature?
AnswerMoving air speeds evaporation and heat loss from skin
A breeze carries heat and moisture away from skin faster, so you feel cooler though the room is not.
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