primary: make your hot drink cool
Hot things cool because they lose heat to their surroundings. We can help them to cool by making the surroundings cooler (by blowing) or by conducting heat away with a spoon. The greater the difference..
Hot things cool because they lose heat to their surroundings. We can help them to cool by making the surroundings cooler (by blowing) or by conducting heat away with a spoon. The greater the difference..
Babies and adults are warmer than their surroundings and constantly lose heat to it. Other things being equal, how quickly they lose heat depends on their size and the surrounding temperature. The
If a cup of hot water has a higher temperature than the room, it loses heat energy to the room. In contrast, ice water, which has a lower temperature than the room, will gain heat energy from the room. Knowing the temperature of
visitors this year: 133 Exothermic reactions A temperature sensor can collect information about the heat generated when lime is mixed with water. Exothermic reactions are used in a glove heating pack. The proportions of...
visitors this year: 99 Heat of reaction As acid reacts with alkali, heat is evolved. This is the heat of neutralisation. This can be easily monitored using a temperature sensor. In this experiment the...
visitors this year: 76 Absorption of thermal radiation A shiny surface and a black surface absorb heat differently. Using temperature sensors or thermocouple probes it is possible to compare the temperatures on two these...
visitors this year: 21 Heat insulation A temperature sensor can be used to study the insulating properties of different materials. Two temperature sensors allow a simultaneous comparison to be made. In this experiment two...
visitors this year: 34 Heat conduction A temperature sensor can be used to study the conduction of heat through different materials. Two temperature sensors allow a comparison to be made. In this experiment strips...
visitors this year: 35 Heating effect of an electric current The temperature, voltage & current of a heating unit are measured over a period of time. This allows us to calculate the power of...
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visitors this year: 29 photo credit unsplash-logoJános Lamberg-Liszkay
visitors this year: 307 When it is icy they put salt onto the roads to melt the ice. What the salt does is to depress, or reduce, the freezing point of water. The result...
visitors this year: 31 Get two temperature sensors to measure the temperature inside and outside a window. You may find that over a long period of time it is best to record your data...
visitors this year: 80 You can use a temperature sensor to study the conduction of heat through materials. Two temperature sensors allow you to compare different materials at the same time. In this example,...
visitors this year: 181 You can use a temperature sensor to study the insulating properties of materials. Two temperature sensors allow you to compare different materials at the same time. In this example two...
visitors this year: 434 Plaster of Paris is white powder you mix with water and pour into a mould. You can make models with it while hospitals use it on broken limbs. When you...
visitors this year: 52 We scientists do the strangest of things. We wanted to see the temperature changes when you freeze and thaw things. So we took a ‘bun’ (a bread roll), placed temperature...
visitors this year: 221 You would think that when you heat up ice that it gets warmer bit by bit. And maybe that the more you heat it the hotter it gets. Well it’s...
visitors this year: 27 What time does it get light in the morning? When does it get dark? Is the central heating working? I just had to know, so I took my data logging...
visitors this year: 99 The dilemma is this: the telephone range as I was making tea. Should I add the milk now or 5 minutes later, after I took the call? One way of...
visitors this year: 33 An investigation with insulated and un-insulated beakers – reloaded “I bought a metal mug to carry my coffee for my daily trip to the train station. But twenty minutes down...
visitors this year: 198 Building scientist David Crowther in Cambridge explains how a heat pump, under floor heating and good insulation keep a house warm. He talks to the Science Show’s Nicola Terry 05/02/2012...
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visitors this year: 192 Pete McKeown, director of Cernunnos Homes and Hamish Watson, director of Polysolar tell Chris Creese about their special solar panels and offer some smart ideas for using solar energy. Follow-up link:...
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rogerfrost.com is a compendium of ideas for using technology with sciencey questions in mind. Started in 1995 to offer ideas to school science teachers, Roger Frost expanded the coverage to home automation, gadgets and sensors to measure, or understand, what’s going on around him.
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Roger Frost has been writing about technology since 1988 and this web includes articles; radio interviews with scientists and tutorials to use technology at home and the classroom.
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