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Sound
Sound
to move back and forth very quickly
vibrate
True or False?
False
a form of energy you can hear and travels in waves
sound
a form of energy you can see and travels in straight lines
light
objects that allow all light to pass through
transparent
objects that allow some light to pass through
translucent
objects that do not allow light to pass through and create shadows
opaque
how loud or soft a sound is
volume
a change that carries energy from one place to another
wave
the high point of a wave
crest
when light bounces off an object at equal angles
reflect/reflection
Give an example of a transparent material
glass, water, clear plastic, etc.
give an example of a translucent material
shower door, paper, tissue, stained glass, sunglasses, etc.
give an example of an opaque object
How high or low a sound is
Pitch
the distance from one crest or trough to the next
wavelength
the low point of a wave
trough
the bending of light because the light is going through a different material
refract/refraction
Does a concave lens bend light inward or outward?
outward/spreads it apart
Does a convex lens bend light inward or outward?
inward/to one focal point
True or False?
False
It will appear big and blurry from far away
sound waves travel quickest through which medium?
solids
the matter through which a wave travels
mediums
the light bends and the colors that make up white light separate when light travels through what object?
prism
When light strikes a bumpy surface, what happens to the light rays?
they bounce off and scatter in all directions
What are all the colors of the visible spectrum in order?
Red, orange, yellow, green, blue, indigo, violet
Explain why we see the color red when we look at a red object?
all colors are being absorbed and the color red is being reflected back
yes
the number of crests or troughs that pass over a certain amount of time
frequency
the distance from the midpoint to the crest or trough of the wave
amplitude
why can I see a rainbow after it rains?
water droplets act like tiny prisms and break white light into all the colors of the rainbow
when light shines through a lens, is the light being absorbed, reflected, bent, or separated into colors?
the light is being bent
What's happening when an object appears black?
all colors are being absorbed
What's happening when an object appears white?
all colors are being reflected
How can lenses be helpful? Give a specific real-world example
They can make objects appear bigger or smaller.
Scientists use microscopes to make small things look bigger.
Telescopes can help astronauts study objects far away.
Eyeglasses bend light to help people see better.
(answers may vary)