Heat
The direction that heat energy moves. From ______ objects to _______ ones.
Warmer to cooler
The type of energy made by vibrations.
Sound
A form of energy that allows you to see objects
Light
A flow of electrical charge
Electric Current
A measure of how hot or cold something is
Temperature
What is the Earth's main source of heat and how does it get to us?
The Sun via radiation
Regions of high pressure on a sound wave
Compression
A type of material that allows light and images to pass through
Transparent
The type of electric circuit which is one continual loop.
Series
The type of wave a sound wave is.
Longitudinal.
The type of heat transfer involved when particles in a solid touch other particles and pass heat on.
Conduction
What word describes the height of a sound wave.
Amplitude
Transluscent objects allow some light to pass straight through them but not all.
True or False
True
A path that is made of parts that work together to allow current to flow.
A circuit
What "r" word means "to bend light?"
Refract
The type of heat transfer involved when particles circulate in liquids and gases.
Convection
Sound waves need particles to travel through. True or false?
True
Translucent objects do not allow light to pass through them.
True or False
False
What does an ohmic resistor look like on a line graph?
A straight line.
When drawing a line graph of time verses temperature, what goes on the horizontal axis?
Time
Explain the difference between a conductor and an insulator. Give an example of each one.
Conductor- a material that heat moves through easily.
Example: Metal
Insulator- a material that heat does not move through easily.
Example: Wool, Cotton, Fur
A sound's pitch is related to the ____________ of the waves.
Frequency
When light hits these type of objects, it is absorbed or reflected.
Opaque
12 volts are running through a circuit that has 3 globes connected. Each globe is getting 12 volts. What type of circuit is it?
Parallel.
What happens to the lights in a circuit when an electrical switch is in the off position and why?
When switch is off, the circuit is open, electrical current can not flow through. The light does not light up.
This type of energy increases when particles are heated.
Kinetic
Speed = distance / time.
Calculate the time it takes for a sound travelling at 340m/s to travel 2km.
Time = Distance / speed
= 2000m / 340 m/s
= 5.88 (5.9) seconds.
What is the speed of light?
300 million m/s
24V runs through a circuit with a 2 ohm resistor in it. Calculate the current flowing in the circuit.
Current = Voltage / Resistance
= 24 / 2
= 12 Amps
Does sound travel faster in solids, liquids, or gases? Why?
Solids because the particles are more closely packed, higher density. Sound needs particles to travel through, so the more particles, the more easily sound can travel.