lesson 20
Electromagnetic __________ carry electromagnetic energy and transfer it from one place to another.
What is waves
Light is a form of what type of energy?
Name 2 uses of x rays?
What are medical uses, airport safety, and anthropology.
What is energy
Heat is never created or destroyed is what law of Thermodynamics.
What is the 1st law
What is electric and magnetic.
When we see the black, what part of the light/ color is being absorbed?
What is all the light/ all the colors.
What ever color we see is the color that is being reflected. We see black because nothing is being reflected.
Heat follows some rules called the
What is the Law of Thermodynamics
How do we measure how loud sound is?
What is sound intensity. ( how big the wave is)
The sun is an example of what type of heat?
What is radiation.
What is Electromagnetic spectrum
To create a television picture, electrical impulses cause an ___________ gun to shoot electrons at the surface of the screen.
What is an electron gun
If matter doesn't make heat, how does matter get hot?
What is the molecules that make of matter are made to move faster.
A sound that is specific to a type of instrument is called?
Sound travels the fastest in what state of matter?
What is a solid!
The measure from the top of one wave to the top of another wave is called?
What is Wavelength
When sound vibrations are entered into a microphone they are converted into what type of wave?
What is electromagnetic wave, will accept electricity as they are electrically converted to magnetic waves.
What is conduction, convection, and radiation.
This refers to how many times a second a vibration occurs?
What is pitch
What is light.
Give 2 examples of electromagnetic energy
What is radio waves, x-rays, light, microwave
Radio transmitters are made to pick up________ .
What is sound
Bones contain calcium, making them more dense. This blocks the x -ray.
What 2 things do musical sounds come from ?
What is voice or musical instrument.
Of the waves we have studied what has the shortest waves?
What is x-rays