Shadows
What is a shadow?
A dark area made when an object blocks light
What do you call a material that lets all light pass through clearly?
Transparent
What is a natural source of light?
A light source that is created by nature/living being
What is reflection?
When light bounces off a surface
Why is it easier to see during the day than at night?
Theres more light
What happens to a shadow when an object moves closer to a light source?
It gets bigger
What do you call a material that lets some light through but not clearly?
Translucent
What is an artificial source of light?
A light source that is made by humans
What is refraction?
When light bends as it passes through a material
Why would a black shirt feel hotter in sunlight than a white shirt?
Black absorbs more light/heat
What type of material makes the darkest shadows?
Opaque objects
What do you call a material that does not let light pass through?
Opaque
How does light travel?
In a straight line
What is dispersion?
When light splits into different colours
Why can you see your reflection in a mirror but not on a wall?
Mirrors reflect, walls scatter
Why are shadows shorter at noon than in the morning or evening?
The Sun is higher in the sky, so light hits more directly.
Give one example of a translucent material.
Wax paper
What happens when light hits an object?
It can be absorbed, reflected, or pass through
Why does a straw look bent in a glass of water?
Refraction
Why might a classroom use frosted glass instead of clear glass?
Lets light in but gives privacy
If you have two light sources, how many shadows can one object make?
Two
Why can you see clearly through glass but not through wax paper?
Glass lets light pass straight through, while wax paper scatters the light
Why can we see objects that arent light sources?
Because light reflects off of them into our eyes
What causes a rainbow to form?
Light is refracted, reflected, and dispersed in water droplets
If a room has no windows and the lights are off, why can’t you see anything—even though objects are still there?
No light is reflecting into our eyes