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..
Tagged: heat
primary: keep baby warm
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
primary: taking temperatures
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
exothermic reactions
visitors this year: 124 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...
heat of reaction
visitors this year: 90 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...
absorption of thermal radiation
visitors this year: 75 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...
heat insulation
visitors this year: 20 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...
heat conduction
visitors this year: 31 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...
heating effect of an electric current
visitors this year: 32 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...
latent heat – salty ice
visitors this year: 275 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...
heat conduction through a window
visitors this year: 28 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...
heat conduction
visitors this year: 73 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,...
insulation
visitors this year: 167 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...
exothermic reaction of plaster of Paris in water
visitors this year: 372 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...
freezing a bun or bread roll
visitors this year: 48 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...
heating ice
visitors this year: 203 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...
day and night light & temperature
visitors this year: 25 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...
add the milk to tea now or later?
visitors this year: 94 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...
compare insulated drink beakers
visitors this year: 31 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...
scientist 49: the building scientist – heat pumps and an eco-home (2012)
visitors this year: 120 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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scientist 29: the eco-home builder – solar panels by Polysolar (2013)
visitors this year: 108 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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