Travel
Reflection, Refraction and Color
Vocabulary
Safety
Sound and Light in History
100
Light and sound both send messages to the ______.
brain
100
The entire visible spectrum (all of the colors of the rainbow) are in ___________.
white light
100
This word means that light cannot travel through
opaque
100
True or False? You should always look straight at the sun.
False
100
What is Thomas Edison known for?
Inventing the lightbulb
200
Sound travels in _________.
waves
200
The moon reflects light from the ______.
sun
200
Light travels clearly through ___________ objects
transparent
200
Can too much light hurt your eyes?
Yes
200
What is Alexander Graham Bell known for?
Inventing the telephone
300
Light travels in __________.
straight lines
300
Raindrops bend sunlight to form a __________.
rainbow
300
When something moves quickly back and forth it is ______________.
vibrating
300
To keep your eyes safe in bright lights, the pupil gets _____. a. larger b. smaller
b. smaller
300
What did people use before light bulbs?
candles and oil lanterns
400
Sound waves hit the _________ and travel to the brain.
eardrum
400
When white light travels through a ________, it becomes a rainbow.
prism
400
The highness or lowness of a sound (like the high sound of a bird and the low sound of a lion) is called the _______.
pitch
400
At what volume should you listen to the radio and t.v.?
low
400
What did Thomas Edison heat to make light glow inside the bulb? a. wood b. wire c. thread
c. thread
500
Light hits the ________ in the eye and sends messages to the brain.
pupil
500
Refraction means ___________ light.
bending
500
This word defines the process of plants using sunlight to make sugar for food.
photosynthesis
500
Loud sounds can be _______. a. dangerous b. healthy c. helpful
a. dangerous
500
The telephone changes the human voice into a. heat b. electric signals c. straight lines
b. electric signals
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