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Heat/light Unit 5
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What can we use to separate white light into colors?
prisms
What is white light made up of?
all colors
Refraction causes light to:
bend as it passes through a different medium
Reflection causes light to:
change direction when it hits a surface
What happens to light as it passes through water?
it changes direction
What type of surface reflects light best? (metal, wood, fabric, skin)
metal
Light is transferred through _______.
radiation
Opaque materials _______ light pass through them.
don't let
Translucent materials _______ light pass through them.
let some
Where can we see a shadow? (behind a transparent, translucent or opaque object?)
behind an opaque object
The material is: (opaque, translucent, transparent)
transparent
The material is: (opaque, translucent, transparent)
translucent
How does light travel?
in straight lines
Name two sources of natural light and two sources of artificial light.
natural: sun, fire, fireflies, stars artificial: torch, lightbulb, machines, phones, computer screens
What type of change is happening?
chemical change
Which change is irreversible? (physical or chemical)
chemical
A liquid changing into a solid is called:
solidification
The photo shows: (condensation, evaporation, melting or solidification)
melting
The photo shows: (condensation, evaporation, melting or solidification)
evaporation
Which conducts heat well? (plastic, wood, or metal?)
metal
A gas changing into a liquid is called:
condensation
What type of heat transfer is this?
radiation
What type of heat transfer is this?
convection
What type of heat transfer is this?
conduction
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