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Why does a heat pump need an external source of energy to heat a house?
Heat pumps use a compressor to make the working fluid condense at a higher temperature.The compressor needs input energy.
What do you have to do to heat energy to freeze a substance?
You need to take heat energy out of the substance.
Why do mechanical systems need an external energy source in order to maintain motion?
Because they need a source of power for example a car needs petrol
What need to happen after the energy is produced?
heat to be dispursed
Heat energy in a sentence?
Heat energy is the result of particles vibrating, when you heat something up it causes the particles in it to vibrate more, which we experience as heat. Its all to do with the amount of internal energy something has. Do you need more detail?
A what is a reaction in which energy is absorbed?
Exothermic reaction
Why does a heat pump need an external source of energy to heat a house?
Heat pumps use a compressor to make the working fluid condense at a higher temperature.The compressor needs input energy.
Are snakes coldblooded?
Yes they are - the need an external heat source to raise their temperature.
What do we need to make fire?
Fuel, oxygen, & an energy (heat) source.
What type of source does geothermal energy need to be near?
Heat from lava or magma possibly a volcano
Passive prosthetics came about to meet what need?
the need for devices to function without an external power source
What do chemical reactions that absorb energy need to occur?
They need a source of energy.A Source of Energy
What is the source of energy for most organism?
water and electricity
What is the basic source of energy on earth?
A basic source of energy is food! we all need it for energy plants and animals alike need food we live in a dog-eat-dog world! because of the food web it is simple to get and eat!
What is the Difference between active filters and passive filters?
Active transducers are those which require electric current (a source of energy) for working, while passive transducers are those which does not need an external source. Passive transducers directly produce electric signals without an external energy source.
What is the source of energy plants need to make food?
The source of energy for plants is sunlight.
How do cold blooded animals breathe?
From an external heat source like the sun.
