Waves
A ________________ is the material THROUGH which a wave travels. It does NOT move with the wave.
What is medium
A machine for producing continuous power in which a wheel or rotor is made to revolve by a fast-moving flow of water, steam, gas, air or other fluid.
What is a turbine?
The Law of Inertia
What is Newton's 1st law.
The movement of charged particles through a material.
What is electricity?
Why does the ocean appear blue?
It is absorbing all color and reflecting blue.
Waves travel at different _____________ in different media.
What is speed
As wavelength decreases, this happens to frequency.
What is increases?
The greater force you apply to something, the greater the ______________ of that object.
What is acceleration?
_______________________ is created by the flowing of electric current.
What is a magnetic field?
What part of the electromagnetic spectrum does night vision goggles use? (Night vision goggles detect heat emitted from organisms)
Infrared light
The bouncing back of a wave when it meets a surface boundary.
What is reflection
These are used to transmit satellite television and cell phone signals.
What are microwaves.
A bus traveled at an average speed of 100 kph for 5 hours. How far did the bus travel?
500 kph
_____________________ can be increased by adding more coils to the wire of an electromagnet.
What is a magnetic field?
Digitalization is the best method for transmission of information because it can be stored for future use. True or false?
True
Waves transport ______________ from one place to another.
What is energy
A wire wrapped into a cylindrical coil.
What is a solenoid?
What is Newton's 1st Law- Law of Inertia.
____________________ is when movement is used to create electricity.
What is induction?
True or false: if an object has zero acceleration, it is possible for it to still be moving.
True- acceleration is a change in speed or direction. If an object is moving at a constant speed and in a steady direction, it has no acceleration. Therefore, this is true.
All frequencies of electromagnetic waves travel at this speed.
What is the speed of light.
These are arranged according to their wavelengths/frequencies.
What are electromagnetic waves?
As wheels of a train push down on a track, the track pushes back against the wheels. This one of Newton's laws is used to explain these forces.
What is Newton's 3rd Law?
____________________ convert mechanical energy into electrical energy using induction.
What are electric generators?
What is the removal of a charge by connecting it to the Earth through a conductor?
What is grounding?