Wave Properties
This is the distance between two consecutive crests of a wave.
What is wavelength
When a wave bounces off a surface, this occurs.
What is reflection
This type of signal uses continuous waves to transmit information.
What is analog signal
This technology collects light from distant stars and galaxies to help scientists study the universe
What is telescope
The galaxy that contains our solar system.
What is Milky Way
The number of wave cycles that pass a point in one second.
What is frequency
The bending of waves as they pass through a different medium.
What is refraction
This type of signal uses discrete values (0s and 1s) to transmit information.
What is digital signal
This system of satellites provides global positioning information.
What is GPS
The theory that explains the origin of the universe.
What is Big Bang Theory
This property of a wave determines its energy
What is amplitude
When waves spread out after passing through a narrow opening or around an obstacle.
What is diffraction
Digital signals are preferred over analog because they are less affected by this.
What is noise or interference
The main advantage of space telescopes over ground-based telescopes.
What is no atmosphere or atmospheric interference
The force that keeps planets in orbit around the Sun.
What is gravity
If the frequency of a wave increases, what happens to its wavelength?
What is it decreases
When two waves overlap and combine to form a larger or smaller wave.
What is interference
Give one example of a technology that uses digital signals.
What is cell phone, TV, computer, etc.?
The invention of radio telescopes was inspired by the discovery of these invisible waves in space.
What is radio waves
The type of galaxy that is shaped like a flattened disk with spiral arms.
What is spiral galaxy
The speed of a wave is calculated by multiplying these two properties.
What is wavelength and frequency
Name two types of electromagnetic waves found on the spectrum
What are radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays)?
Name one advantage and one disadvantage of digital signals compared to analog signals.
Advantage: More reliable, less noise/distortions
Disadvantage: Complex processing/more bandwidth
The discovery of tectonic plate movement led to improvements in this type of technology used to detect earthquakes.
What is seismographs
The speed at which light travels in a vacuum.
What is 300,000 km/s or 300,000 km per second