Light One
Reflection occurs when
A. light bends. B. light shines in your eyes. C. light goes through a surface. D. light strikes a surface and bounces off.
D. light strikes a surface and bounces off.
A scientist in a sound lab is counting the number of troughs of sound waves that pass every second. What is he measuring?
A. wavelength B. wave height C. wave frequency D. amplitude
C. wave frequency
How are light and sound ALIKE?
A. Both travel as rays. B. Both can vary in pitch. C. Both are forms of energy that travel as waves. D. Both depend on vibrations in air.
C. Both are forms of energy that travel as waves.
Sound waves can NOT travel through?
A. water B. air C. empty space D. a brick wall
C. empty space
Which type of surface reflects light MOST clearly?
Things that are shiny
Which object would BEST reflect light from a light bulb?
A. a shiny spoon B. notebook paper C. a black sweater D. a glass of water
A. a shiny spoon
Sound travels FASTEST through which of these materials?
A. Air B. Solid objects
B. Solid object
DAILY DOUBLE!!!
What are the three mediums that sound travels through?
solid, liquid, gas
What will happen to light waves that strike the surface of a window?
A. They will be absorbed B. They will pass through the window C. They will be reflected D. They will be refracted
B. They will pass through the window
Joshua's jacket reflects blue light. It absorbs all other colors of light. What color is Joshua's jacket?
blue
A lens works by __________________ light.
A. blocking B. absorbing C. refracting D. reflecting
C. refracting
A boy is plucking a stretched rubber band to make sounds. What is the best way for him to change the VOLUME?
A. Stretch the rubber band more or less tightly. B. Pluck the rubber band harder or more softly. C. Pluck the band more quickly or more slowly. D. Use two different size rubber bands.
B. Pluck the rubber band harder or more softly.
A trumpet and a tuba are blown with the same amount of effort. They sound different because
A. they have different volumes. B. they produce different pitches. C. they have different amplitudes. D. they are made of different materials.
B. they produce different pitches.
How can you use a guitar to demonstrate changing or varying pitch, or in other words, the frequency of a sound wave?
I can put my hands on the guitar strings and then pluck them. If my hands are close together the strings will vibrate quicker causing a higher pitch, but if I move my hands farther apart I will play a lower pitch because the strings will vibrate slower.
Which color has the longest wavelength?
Red
Why does a tree’s shadow have the shape of the tree?
A. The tree blocks light. B. The tree stands far from its shadow. C. The tree lets in some light. D. The tree allows light to pass through it.
A. The tree blocks light.
A boy is plucking a stretched rubber band to make sounds. How can he change the PITCH?
A. Move closer to or farther away from the rubber band. B. Stretch the rubber band more or less tightly. C. Pluck the rubber band harder or more softly. D. Pluck the band more quickly or more slowly.
B. Stretch the rubber band more or less tightly.
Draw a wave with a low frequency and a high amplitude.
See boards
Explain why sliding the straws closer together or further apart on your "sound sandwich" changed the pitch.
When we moved the straws it changed the way the waves travelled by either making a lower or higher frequency.
What is the name of an object that is transparent, can separate white light into colors, and is shaped like a triangle?
Prism
An object that you can see through clearly is called:
Transparent
Explain why the shorter straw on the pan-pipe has a higher pitch than the longer straws.
The sound waves occur more frequently and have a shorter distance to travel. Higher frequency waves have higher pitches than lower frequency waves.
Explain why there is no sound in space.
Without air there are no particles for the sound waves to bounce off of and produce sound.
How do the lenses in eyeglasses help correct a person’s vision?
A. They bend light. B. They reflect light. C. They separate white light into colors. D. They absorb light
A. They bend light.
Sometimes you can see a rainbow when you look at a lawn sprinkler on a sunny day. This is because the water droplets
A. are transparent B. absorb light C. separate light D. magnify objects
C. separates light.