ElectroMagnetism
All magnets have what?
2 Poles
State the distance formula.
Speed x Time
What is the top point of a wave called?
The Crest.
Where does visible light fall on the electromagnetic spectrum?
In the middle of infrared and ultraviolet.
What is a spectra-scope used for?
To find the composition of stars.
Like Poles do what?
Repel
Define velocity. How is it different from speed? Provide an example of velocity.
The speed of something in a given direction.
Ex: The car is traveling at 60mph northwest
What is the bottom point of a wave called?
The trough
How do radio waves and visible light waves differ?
Based on their wavelengths.
What property of a star can be determined by color?
Temperature of the star.
Attract
State the speed formula.
Distance/Time
A sound wave in steel with a frequency of 550 Hz and a wavelength of 3.0 meters.
1650 m/s
Why does a blue banana appear blue?
Blue is reflected while the other colors are absorbed.
What is a space probe?
An unmanned robotic spacecraft that explores further into space.
At which location is Earth's magnetic field the strongest?
The poles
State the time formula.
Distance/Speed
A ripple on a pond with a frequency of 3 Hz and a wavelength of 0.5 meters.
1.5 m/s
Which type of electromagnetic wave sends information from the International Space Station back to Earth?
Radio Waves.
What electromagnetic waves did the James Webb telescope use in order to examine the universe?
Infrared Rays
Define Electromagnetism.
An interaction between electricity and magnetism, as when an electric current or a changing electric field generates a magnetic field, or when a changing magnetic field generates an electric field.
In a distance vs. time graph, what does the slope of the line represent?
The speed of an object
A wave on a slinky spring with a frequency of 2 Hz traveling at 3 m/s.
1.5 Meters
In a vacuum, radio waves, visible light, and x-rays have the same what?
Speed
What is a light year? What is it used for?
1. A year that light travels.
2. It is used for large distances inside of space.