Semiconductors

What is this?

• An LED

• An LDR

• A thumbtack

• A bipedal indicator

What is this?

• An LED

• A stamper

• An LDR

• A tiny maze

This is the symbol for what?

• LED

• LDR

• Resistor

• Thermistor

A semiconductor has a __________ between that of a good conductor and an insulator

• current

• density

• temperature

• resistance

An example of a semiconductor material is ____________ (2 answers)

• germanium

• copper

• silicon

• gold

The graph shows the relationchip between temperature and resistance for a ______________

• metallic conductor

• thermistor

• semiconductor diode

• filament bulb

This is the symbol for a ____________

• thermistor

• thermometer

• bulb

• LED

When an electron breaks free from a covalent bond, it leaves behind a gap in the atom from which it came. This gap is called a __________

• positive hole

• valence electron

• ion

• superconductor

Does the diagram show n or p type doping?

• n

• p

Does this diagram show n or p type doping?

• n

• p