Sound
Materials and Light
Properties of Light
Communication with light and Sound
Volume and Pitch
100
Sound travels in this way
What are waves
100
Which materials allows ALL light to pass through?
a. steel, cardboard, and mirrors
b. glass, clear plastic, and water
c. sunglasses, wax paper, and shower curtains
What is B: glass, clear plastic, and water
100
Light travels this way.
What is a STRAIGHT LINE through electro-magnetic waves.
100
Light and Sound are both.....
types wave energy
100
The loudness or softness of sound which depends on how hard or soft the matter is vibrated.
What is Volume?
200
Objects make sound when they _____________.
vibrate
200
This material lets some light pass through while blocking some light.
What is a Translucent material?
200
The bouncing back of light waves when they hit an object with a very smooth and shiny surface, like a mirror.
What is Reflection?
200
True or False:
If an object allows people to see and hear things, it means the object makes both light and sound.
True
200
The highness or lowness of a sound.
What is Pitch?
300
True or False
A bell or tuning fork can make a sound because they are both metal.
False
They can make sound because they can both be VIBRATED!
300
This flashlight is shining on a __________ material because the material is ________ _____ _______, making a __________.
What is:
Opaque material because the material is
blocking the light, making a shadow.
300
Part 1: What causes the writing to appear changed? ____________________
Part 2: The light rays are _______ they pass through the water.
1. What is Refraction:
2. The light rays are BENT passing through the water.
300
Part 1:How living things give information to each other?
Part 2: Five natural ways people receive that information?
Part 1: Communication
Part 2: Our 5 senses (seeing, hearing, smelling, tasting, and touching)
300
If you tap these tubes on a table...
The SHORTER tube will make a ______ pitch sound, while the LONGER tube makes a _______pitch sound.
Shorter= high pitch
Longer= low pitch
400
The back and forth movements of an object. They can be powerful, weak, fast or slow.
What are Vibrations?
400
This flashlight is shining on _____________ materials because _____ of the light is ________ ________, leaving ____ _________.
What is:
Transparent materials because all the light is passing through, leaving no shadow.
400
When light hits a mirror, it ________ ____ the mirror in ________ lines.
bounces off
straight
400
We use our sense of ________ to communicate with traffic lights and our sense of _______ to communicate with Morse-Code.
sight/seeing
hearing
400
You are observing the sound of a drum using a sound-level reader (measured in decibels) to measure how loud the drum can get.
You hit the drum differently 3 times and recorded your decibels (dB)
Hit 1:hit drum lightly= 40 dB
Hit 2: hit drum medium =65 dB
Hit 3: hit drum hard= 100 dB
What statement is true?
A. The lightest hit caused the greatest decibel reading and the hardest tap caused the lowest decibel reading.
B. The harder the drum was hit, the lesser the sound was produced.
C. When you hit the drum as hard as you can, it causes the greatest number of vibrations, which causes the sound to be the loudest.
C. When you hit the drum as hard as you can, it causes the greatest number of vibrations, which causes the sound to be the loudest.
500
In ______ sound travels the fastest because the molecules are close together.
Solids
500
Fill in the blanks:
This flashlight is shining on a _____________ material because the light is ________ ________, leaving a _______ ___________.
What is:
Translucent material because the light is
partially blocked, leaving a light shadow
500
Which beam of light shows what happens when light hits water?
What is that property of light called?
What is Beam C.
It shows refraction of light because water slows and bends the light beam.
500
Name three common tools that uses sound NOT light to communicate?
What is:
1. Our voice in spoken language
2. Walkie-Talkie
3. Intercom
4. Old telephones, NOT cellphones as they use sound and light.
5. emergency signals
6. alarms
500
If you stretch a rubber band and pluck it, the MORE you stretch it, the FASTER it vibrates making a ____________ ___________ sound.
a. lower-pitch sound
b. higher-pitch sound
c. loud sound
d. soft sound
b. Higher-pitch sound...
NOT a louder sound, because it says you are changing how much you stretch the rubber band, NOT how HARD you pluck it!
600
Fill in the missing words:
Sound is produced when objects ________, causing the _____ around them to ________. We _______ these vibrations as _________ when they reach our _______.
vibrate
air
vibrate
hear
sounds
ears
600
These shapes are made out of four different materials and are hung in a sunny window. 
Look at what is seen inside.
Name each shape and the type of material it is classified as.
Square: opaque (shadows = light blocked)
Circle: opaque (shadows = light blocked)
Triangle: translucent (dim shadow, some light blocked)
Diamond: transparent (no shadow, ALL light passes through)
600
What is the difference between reflection and refraction?
Reflection is when light hits a shiny surface and bounces off.
Refraction is the bending of light as it passes from one substance to another.
600
Going from left to right, top to bottom:
Write: “S” for objects that communicate using sound “L” for objects that communicate using light. Some may use both! 
1. Bell-S
2. Horn-S
3. Candle-L
4. Camera-L, S
5. Flashlight-L
6. Fox-S
7. Computer-L, S
8. Sun-L
600
If you stretch a rubber band and pluck it, the MORE you stretch it, the FASTER it vibrates making a ____________ ___________ sound.
a. lower-pitch sound
b. higher-pitch sound
c. loud sound
d. soft sound
b. Higher-pitch sound...
NOT a louder sound, because it says you are changing how much you stretch the rubber band, NOT how HARD you pluck it!