Answer:
1. magnetometer, 2. reactor, 3. megawatt, 4. infrared, 5. turbine.
Step-by-step explanation:
A magnetometer is an electronic instrument used to measure magnetic fields.
(1. an instrument to measure magnetism - magnetometer)
A reactor is a device used for the production of controlled nuclear energy, there are two principles in which nuclear reactors can be based: (i) Fission, (ii) Fusion.
(2. a system for the production of controlled nuclear energy - reactor)
A million watts equals a megawatt, a power SI unit.
(3. a million watts; thousand kilowatts - megawatt)
Infrared radiation corresponds to electromagnetic waves whose wavelength is between 0.7 to 1000 micrometers.
(4. invisible radiation with waves longer than red - infrared)
A turbine is mechanical device which generates mechanical work at the expense of fluid energy.
(5. An engine in which a wheel turns by the force of wind, water or steam - turbine)