Let There Be Light
This module's topic is 'Light'. This verse from Genesis Chapter 1 best describes how God created light.
What is Genesis 1:3, "And God said, “Let there be light,” and there was light."
Page 349, Natural Notes
Electromagnetic waves do not require this in order to travel.
What is 'A Medium'?
Page 350, 1st Paragraph
This Electromagnetic spectrum includes all of the wavelengths that we can see.
What is "The Visible Light Spectrum"?
Page 358, Figure 10.12
If you break a bone, you're going to have a personal experience with these types of rays.
What are "X-Rays"
Page 366, Top section
These are the two components, or parts, of the eye that focuses light on the retina sending them by electrical messages to the brain to produce images.
What are "Cones and Rods"?
Page 382, middle of the page.
Without this coming from the sun, life would not be possible on Earth.
What is "Light"?
Page 349. Natural Notes
Electromagnetic waves consist of these two fields.
What are "Electric and Magnetic Fields"?
Page 350, Figure 10.2
This is the shortest radio wavelength and is also commonly found in a house warming up leftover pizza.
What are "Microwaves"? (Its in the name, Micro, get it?)
Page 359, 2nd section on the bottom of the page.
These rays are the most energetic, smaller in diameter than the nucleus of an atom and are the reason radioactive material is dangerous to living creatures.
What are "Gamma Rays"?
Page 366, 2nd section middle of page.
Unlike a camera that has to move the lens to track an object as it moves, the eye does this instead using ciliary muscles to do this..
What is ?Change the shape of the lens"?
Page 383, 2nd paragraph / top of page.
These rays can not be seen but can very well be felt and are responsible for giving you a sunburn.
What are "Ultraviolet rays"?
Page 349, first paragraph.
When light hits material that is translucent, this is the behavior observed.
What is "It passes through but scatters"?
Page 367, figure 10.24
The speed of light may not depend on temperature like sound does, but it does depend on this.
What is "The Substance" (through which the light passes)
Page 352, text under figure 10.4
These rays are known to be harmful, or even lethal, to living tissue and is used by medical professionals to sterilize items and rooms with them.
What are "Ultraviolet Rays"?
Page 365, start of 2nd paragraph.
Myopia and hyperopia are the medical terms to describe these two conditions of the eye.
What are "Near-sightedness and farsightedness"?
Page 383, Figure 10.41
When the wavelength of light has a higher frequency, or the wavelength is shorter, it has this.
What is "More Energy"?
Page 365, first sentence.
When light bounces off of an object, this is what has occurred.
What is "Reflection"?
Page 368, top paragraph
This is the fastest speed anything with mass can travel and is one of the assumptions of Einstein's theory of relativity.
What is "The Speed of Light"?
Page 353, think about this section
This type of metal is used in making wearable protective gear worn by medical technicians when using an X-ray machine to avoid over exposure.
What is "Lead"?
Page 3662nd paragraph under "X-Rays"
This is the thin, transparent substance covering the eye to protect it from abrasions and other kinds of harm.
What is the "Cornea"?
Page 382, Top section of the page.
UV-C waves, the most damaging of ultraviolet rays to life on Earth, are blocked by this part of earth's atmosphere.
What is the "Ozone Layer"?
Page 365, figure 10.20
"The angle of reflection equals the angle of incident" is the definition of this law of light.
What is "The Law of Reflection"?
Page 370, Blue definition middle of the page.
Scientists know electromagnetic radiation travels as waves, but there is also a belief that they travel, or behave, like this.
What is "A stream of particles"?
Page 353, first paragraph under "The Dual Nature of Light"
These Ray are lethal to all cells which is why they are used to do this to help very sick people.
What is "Kill cancer cells"?
Page 366, 2nd paragraph under "Gamma Rays"
Rods and cones are responsible for detecting these things to allow the eye to see.
What are "Color and Light (or White)"?
Page 385, figure 10.42