Topic 4 Flashcards
1
Q
What is a thermo-couple and what does it measure.
A
A thermocouple is a loop of two wires made of different types of metals and it measures temperature
2
Q
How are thermocouples used?
A
They are used to get accurate temperature measurements where regular liquid thermometers cannot be used
3
Q
What is a Thermo-Electric Generator
A
A thermo-electric generator is a device based
on a thermocouple that converts heat directly
into electricity without moving parts.
4
Q
What does a Piezoelectric Crystal do?
A
A Piezoelectric Crystal uses pressure to create vibrations or sound and when they are hit together they can make light, sound or electricity.
4
Q
Give an example of a Piezoelectric Crystal.
A
Birthday cards with sounds.
4
Q
What is another name for a Photovoltaic cell?
A
Solar Pannel
