A wave that carries signal from a radio station to your radio.
What is a radio wave?
100
A changing electric field creates ...
What is a changing magnetic field?
100
A wave that is made from vibrating electric charges and can travel through space where matter is not present.
What is an electromagnetic wave?
100
A method of finding position is radar- radar stands for...
What is Radio Detecting and Ranging?
100
These tubes produce the images you see on television.
What is cathode-ray tubes?
200
Radio waves with wavelengths of less than one meter.
What is a microwave?
200
This scientist found that by shining light on a metal, electrons were ejected from the metal.
Who is Heinrich Hertz?
200
These waves require matter to transfer energy.
What are sound and water waves?
200
Microwaves can be used for this daily task.
What is heating food?
200
This is the specific frequency on the electromagnetic wave that a radio station is assigned.
What is a carrier wave?
300
Waves that transmit thermal energy as warmth you can feel.
What are infrared waves?
300
Light behaves as a particle whose energy depends on the frequency.
What is a photon?
300
This happens to the electric charges in your skin when they are stricken by an electromagnetic wave.
What is they gain energy?
300
These are used to kill diseased cells and can also damage healthy cells.
What are x-rays and gamma rays?
300
Transmits one radio signal and receives another radio signal from a base unit.
What is a transceiver?
400
Ultra-high frequency electromagnetic waves that can travel through matter.
What are x-rays and gamma rays?
400
When these are sent through two narrow slits, they behave as a wave.
What is electrons?
400
Electromagnetic waves are produced when something...
What is vibrates?
400
These are two types of ultraviolet waves that can damage skin and cause cancer.
What are UVA and UVB rays?
400
A system of satellites, ground monitoring stations, and receivers that provide detailed information about your exact location at or above Earth's surface.
What is the Global Positioning System?
500
These waves carry enough energy to enable them to enter skin cells.
What is an ultraviolet wave?
500
These are two of the ways that all waves can be described.
What is by their frequency and their wavelength?
500
The speed of a waves depends upon...
What is the material in which they travel through?
500
Also known as an "MRI", this technology provides a safe alternative to potentially harmful x-ray imaging.
What is Magnetic Resonance Imaging?
500
Since first developed this amount of satellites have been launched into Earth's orbit.