Materials & Light
If a flashlight is used to shine a light through four different materials, what would you see on the other side of the material that was classified as opaque?
What is darkness or a shadow because the opaque material would block the light.
An object will produce a sound when it -
is heavy.
heats up.
vibrates.
grows.
vibrates
Television allows people to see and hear things, which means that a television set must be able to _______.
make light and sound
get very hot
move from place to place
break very easily
make light and sound
Students are collecting materials that will be put into a group labeled “opaque.” Which material would belong in this group?
Glass
Steel
Plastic
Water
What is steel?
Some materials, like those used to make shower curtains, are classified as translucent. These materials are _____________.
completely block all light
allow light to pass through completely
allow only some light to pass through
reflect all the light
What is:
allow only SOME light to pass through
Students used flashlights on different materials and recorded their results. One material caused the light to bounce back at an angle.
Was the material reflecting or refracting the light?
Reflecting
If you blow on two whistles, one longer than the other, the shorter one will make a sound that
is -
higher
lower
louder
softer
higher
A traffic light tells people what to do by using different colors.
In order to know when to stop or go, a person must use which sense?
Hearing
Seeing
Tasting
Smelling
Seeing
Students can demonstrate reflection by doing which of the following?
Enlarging an image using a hand lens
Measuring a shadow made by the Sun
Warming metal under a heat lamp
Observing their own image in still water
Observing their own image in still water
After observing how light interacts with different materials, a student collected data on a table under the heading "All Light Goes Through".
What material would be under the heading on the data table?
Metal
Cardboard
Glass
Cloth
What is Glass, because it is transparent.
An image can be seen in a mirror because light from an object that strikes a mirror does what?
Bends as it passes through the mirror
Is absorbed by the glass in the mirror
Adds light and heat to the mirror
Bounces off the mirror in straight lines
Bounces off the mirror in straight lines
A bell can make a sound because -
it is made of metal.
it is very heavy.
it is a solid.
it can vibrate.
it can vibrate.
Which tool uses sound to communicate?
Pencil
Flashlight
Magnet
Telephone
Telephone
Television allows people to see and hear things, which means that a television set must be able to _______.
make light and sound
get very hot
move from place to place
break very easily
make light sound
If a flashlight is used to shine a light through four different materials, what would you see on the other side of the material that was classified as opaque?
What is darkness or a shadow because the opaque material would block the light.
A student investigated the ways light travels or behaves when shone into water. They said the water refracts the light because __________________
The beam of light bounced back at the same angle it was shone.
The beam of light bent slightly, changing it's direction.
The beam of light traveled in a straight path and was unaffected by the water.
The beam of light bent slightly changing it's direction.
When the tuning fork is struck against the table, it will begin vibrating. We can tell it is vibrating because it -
makes a sound.
gets warmer.
increases in size.
changes color.
makes a sound.
Students need to construct a device that sends a signal using both light and sound. They have a selection of items they can use to build the device. Which two items will be most useful for making this signaling device?
A cotton ball and a tissue
A note card and some yarn
A large bell and a candle
A paper towel and a toothpick
A large bell and a candle
What makes sound?
vibrating matter or molecules that travel in a wave to your ear drums.
Students taped shapes (square, circle, triangle, and diamond) made of four different types of materials on a sunny window.
The triangle was the only shape that produced a DIM or faint shadow so it would be classified as opaque, translucent, or transparent?
What is translucent?
A card with writing on it is viewed through a JAR WITH WATER IN IT. Part of the writing on the card appears to be CHANGED. The change in the appearance of the writing is the result of which of the following?
Light rays passing through the water are bent.
Light rays are absorbed by the glass of the jar.
Not all of the light that strikes the writing is reflected.
Light is not able to bounce off of the jar.
Light rays passing through the water are bent.
When a stretched rubber band is plucked, it makes a sound. Stretching the rubber band more makes it vibrate faster. What is the result?
The rubber band no longer makes the sound.
The rubber band makes a louder sound.
The rubber band makes a sound that lasts longer.
The rubber band makes a higher pitched sound.
The rubber band makes a higher pitched sound.
The teacher is pointing a flashlight at students, using it to send a signal. Which student will best be able to receive the signal?
The student who are behind the teacher?
The student who is in front of the teacher and facing the teacher.
The student who is in front of the teacher but is not facing the teacher.
The student who is in front of the teacher and facing the teacher.
What is the difference between reflection and refraction?
Reflection is when light can't pass through a material that is flat, smooth, and shiny. The light bounces back.
Refraction is when light can pass through a material. When it does the light speed slows and its direction changes or bends.