Definitions
A form of energy you can hear and travels in waves
Sound
Sound can travel through empty spaces. True of False
False
When an object allows all light to travel through
Transparent.
Light travels in a ______________________
Straight path
A lotion I rub on my skin to protect from light
A form of energy you can see.
Light
Absorbed or reflected
Objects that allow some light to travel through
Translucent
When light bounces off of a shiny surface, including the moon.
Reflects
UV coated lenses we wear on our eyes for sun protection.
Sunglasses
_____________ separates light into colours
Prisms
How high or low a sound is
Pitch
Objects that do not allow light to travel through and create shadows
Opaque
When passing through one medium to another light ____
Reflectors or reflective clothing
Identify devices that make use of the properties of light .
Flash light, telescope, a microscope, motion detector
How loud or soft a sound is
Volume
Name 3 sources of Natural Light
Sun, stars, firefly, bioluminescent algae, jelly fish, anglerfish, volcanoes.
White light is made up of _____________________
Many Colours: Red, orange, yellow, green, blue, violet.
To protect my ears from loud sounds like lawn mowers and power tools.
Ear plugs
Identify devices that make use of sound
trucks and cars, ear plugs, hearing aides, microphone, cellphone, walk e talkie.
A charge that carries energy from one place to another
Wave.
3 sources of Artificial Lights
lamp, candle, fireworks, light bulb, lighter, car lights, tv, toys.
Light ______ when passing through an opening
Diffracts (bends and spreads out)
A device used to hear better but we need to be careful not to put it too loud.
Headphones.