thermometer

Question 1

When does boiling happen

Answer 1

at a fixed temperature, happens throughout the liquid

Question 2

When does evaporation happen

Answer 2

occurs at any temperature, happens from the surface of the liquid

Question 3

What is the difference between temperature vs thermal energy/internal energy?

Answer 3

temperature: average kinetic energy of the particles
thermal energy: total kinetic energy of the particles

Question 4

How does thermocouples work

Answer 4

• when the joint between 2 wires is heated,
• made up of 2 different metals combined into a strip
• voltage is created (induced) if the temperature at each end is different (since the conduction rate is different)
• the size of the voltage depends on the difference in temperature

Question 5

pros of thermocouples

Answer 5

• measure very high temperature
• quick to respond temperature changes

Question 6

cons of thermocouples

Answer 6

• they are not linear

Question 7

How does thermometer work

Answer 7

• when the alcohol in a thermometer expands
  -> it pushes up the capillary tube
• the distance the liquid moves measures the temperature