LDRs and Thermistors

• what is an LDR?

  a resistor that is dependent on light intensity
• what happens to LDRs in the dark?

  the resistance of an LDR is high and little current can flow through it.
• what happens to LDRs in bright light?

  the resistance of an LDR is low and more current can flow through it
• what is a thermistor?

  a temperature dependent resistor
• what happens to the resistance of a thermistor as the temperature increases?

  the resistance decreases