The Sun casts its longest shadow when it first appears and before it disappears. When light waves hit substances, three things can happen:
Light can be refracted, absorbed, or reflected
. Reflection occurs when light strikes a surface and bounces off.
What are the 3 things that can happen when light strikes an object?
When light strikes a new medium, the
light can be reflected, absorbed, or transmitted
. When light is transmitted, it can be refracted, polarized, or scattered.
What happens when light hits a material?
What happens when light hits a different material? Light travels in straight lines through a material (like air) until it hits a different material. Then
it can be absorbed reflected or
• Then, it can be absorbed, reflected, or transmitted (which means “passed through”).
Where light is hitting an object is called?
Reflection is when light bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. This is called specular reflection. …
Diffuse reflection
is when light hits an object and reflects in lots of different directions.
What is the bouncing of light called?
Reflection
occurs when light traveling through one material bounces off a different material. The reflected light still travels in a straight line, only in a different direction. The light is reflected at the same angle that it hits the surface. The angle of incidence is equal to the angle of reflection.
Which would light travel through fastest?
Explain that unlike sound, light waves travel fastest through
a vacuum and air
, and slower through other materials such as glass or water.
What happens when light is blocked?
What happens when something blocks the path of light? … Light travels in straight lines. It cannot bend to travel around objects; if it did we could see around corners! When light is blocked by an object
a dark area or shadow is formed
.
How does light interact with objects?
If we think about a specific wavelength of light as it interacts with an object, it can be:
Reflected (reflection)
– electromagnetic radiation/light bounces off the surface of the object. In order to see an object that doesn’t make it’s own light like the sun, light needs to bounce off the object and reach our eyes.
What material can completely allow light to pass through?
Materials like air, water, and clear glass are called
transparent
. When light encounters transparent materials, almost all of it passes directly through them. Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them.
What materials can absorb light?
Materials that absorb sunlight well include
dark surfaces, water and metal
. The sun’s light energy arrives as a mixture of visible light, ultraviolet and infrared; some materials absorb all these wavelengths well, while others are better suited to a certain restricted types of light.
What is an effect of an object getting wet?
When an object gets wet and absorbs water,
its index of refraction effectively moves closer to that of air
. When light strikes a wet object, therefore, less light is reflected than when it is dry. A pair of wet pants, a wet sidewalk, and a wet beach, therefore, reflects less light, and therefore looks darker.
Are left and right swapped in a mirror image?
Mirrors don’t actually reverse anything. … The image of everything in front of the mirror is reflected backward, retracing the path it traveled to get there.
Nothing is switching left to right or
up-down. Instead, it’s being inverted front to back.
Is the bouncing of light?
Light bouncing back off a surface is
reflected light
. … When light travels from one medium to another it bends or is refracted because waves travel at different speeds through different medium. The extent to which it bends is called the index of refraction. The higher the index of refraction, the more the light bends.
Can light bounce off objects?
Light bounces or reflects off objects and into your eyes
. If you held your hands in front of your eyes, you would not be able to see the reflected light from the table or telephone. The light bulb inside the lamp gives off its own light, which reflects off all the surfaces in the room and into your eye.
Does anything travel faster than light?
No. The universal speed limit, which we commonly call the speed of light, is fundamental to the way the universe works. … Therefore, this tells us that
nothing can ever go faster than the speed of light
, for the simple reason that space and time do not actually exist beyond this point.
Does light travel faster in water?
As a vacuum is devoid of such particles, light can attain its maximum velocity, which, as far as we know, cannot be surpassed. However, light travels at about 0.75c (75% light speed) through water. Some charged particles can move faster than 0.75c in water and therefore travel
faster than light
.
