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Science #1

Helps me study

QuestionAnswer
Light travels in ———— lines Straight
Light travels ——— than sound Much faster
How fast does light travel? 300,000 kilometers per second
What are shadows? Places where light is blocked
Light travels in what? Waves
What is a wave? A disturbance that transfers energy from place to place
Characteristics of light waves? They have crests, troughs, wavelengths, frequency, and speed.
Are light waves electromagnetic? Yes
We see things because they ———- light into our eyes Reflect
Light is a form of energy called Electromagnetic Radiation
What is electromagnetic radiation Comes from sun and other sources, travels at speed of light, is mostly invisible, carries energy, and we can’t live without it
Smooth shiny surfaces have a ——— reflection Regular
Rough, dull surfaces have a ——— reflection when light is scattered in different directions Diffuse
Plane mirrors are Flat and make virtual images
Convex mirrors do? Make images bigger
Concave mirrors do? Make images smaller
What are virtual images Light rays do not meet up and the image is always upright or right side up
Real images Always upside down and are formed when light rays actually meet
Refraction is When waves speed up or slow down due to traveling in a different medium
Medium is Something that light waves will travel through
Light rays are Slowed down by water
The degree that light bends when it enters a new medium is called the “Index of refraction”
Concave lenses make Only virtual images
White light is not a single color; it is made up of A mixture of the seven colors of the rainbow
What are the primary colors Red, blue, and green
The color an object appears depends on The colors of light it reflects
Light gets reflected from a surface at —————— angle it hits The same
A —— breaks up light into all the colors of the rainbow Prism
Created by: hirsch.jaylee16
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