End Of Set Test Flashcards
What can waves do?
Carry energy from one place to another
What do sound waves travel through?
A medium
What is the number of waves that pass a point each second called?
Frequency
What is the frequency or pitch of a sound a measure of?
How high or low it is
What is the frequency or pitch measured in?
Herts (Hz) and the symbol for it is an “f”
What is velocity in physics terms?
“V”
What is the loudness (amplitude) of a sound?
The height of the wave above the starting point
What is the energy of a sound caused by?
Vibrations
What are sound waves an example of ?
Longitudinal waves but they are drawn as transverse waves
What can sound not travel through?
A vacuum
What can sounds travel well through?
Solids, liquids and gasses
What is velocity another word for?
Speed
What is electricity a movement of?
Electrons
What does current measure the flow of?
Electrons
What is current measured by?
Ammeters (A) in amps
What is an ammeter always connected in/by?
Series
What is voltage also called?
A potential difference
What does a voltage measure?
How much energy is available for use by the components in the circuit
What is the voltage provided by?
The cells/batteries/power supply’s used
What is voltage measured by?
A volt meter in volts (V)
What is resistance a measure of?
How hard it is for the electrons to move around the circuit
What things have resistance?
All components and wires have resistance
What is resistance measured in?
Ohmmeter or ohms (Ω: the Greek letter omega)