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WorksheetsGrade 4 Waves in Action Review
Total questions: 31
Worksheet time: 23mins
Mason's older sister loves to tease him. She notices that he can capture sunlight with her watch face and bounce it into Mason's eyes. She keeps doing this until he screams at her to stop. What scientific concept is Mason's sister using to torment her brother?
absorption
conduction
reflection
refraction
Which of the following best describes what happens when a baby looks in a mirror?
Matter from the baby's face is transformed into light waves in the mirror.
The mirror acts as a light source that lights the baby's face.
Light waves bouncing off the baby's face reflect off the mirror.
The baby's eyes see light waves reflecting of the mirror as solid matter.
Sound also travels in waves, similar to light. As the amplitude of a sound wave increases, the sound gets louder. Which image would represent the loudest sound wave?
Image 1
Image 2
Image 3
Image 4
Which letter represents the wavelength of the wave?
point A
line B
point C
line D
What advantage does the eagle gain by hunting during the day?
The eagle can enjoy the warmth of the sun.
The eagle can use its sense of hearing more effectively.
The eagle can easily hide from its prey.
The eagle can see its prey more clearly.
How is Barney able to fetch the ball? Put the steps in order.
Light reflects off the ball
Light enters Barney's eyes
Information is sent to Barney's brain
Barney chases after the ball
Barney brings you the ball. "Good dog!"
Which of these objects does not produce (emit) light but can be seen because it reflects light?
sun
light bulb
firefly
mirror
What is the primary function of a mirror when a person looks into it?
The mirror transforms the person's face into light waves.
The mirror reflects light waves and turns them into solid matter.
The mirror reflects light waves that bounce off the person's face.
The mirror acts as a light source illuminating the person's face.
Liam needs to send a secret message to his friend who lives across the street. He is concerned about waking her parents. After careful consideration, he comes up with a model to send a message using Morse Code. Which model will work best for his situation?
Long and short flashes of light using a flashlight.
Long and short rings of an alarm
When Jacobi strikes the drum with the mallet, it makes a sound. What causes the drum to produce this sound?
because she is hitting it hard
because the drum is made of wood
because the drum skin vibrates
because the mallet is heavy
Vivienne decides to send a message using her flashlight so it is quiet enough not to wake her parents. How would she send the letter K to her friend?
One long ring, one short ring, one long ring
One loud ring, one quiet ring, one loud ring
One long flash, one short flash, one long flash
One bright flash, one dim flash, one bright flash
How is Gabriel's cellphone able to transmit sound?
It magnifies a person's voice
It carries the sound through wires
It conducts vibrations from speaker to receiver.
It converts vibrations to electrical signals.
We hear all sounds because of.....
vibrations
thermal energy
electricity
heat
When the man taps on the table, it makes a sound. Why does the table make a sound?
The table absorbs the force and creates light.
The air pushes the table, causing it to create sound.
The table vibrates, and the vibrations travel through the air as sound waves.
The man's hand gets hot, and the heat makes a noise.
Which of the following describes reflection?
Light bounces off an object
Light bends
Light stops at the object and creates a shadow
Which numbers on the wave are the trough and the crest?
; #1 is a trough; #4 is a crest
#1 is a trough; #3 is a crest
#2 is a trough; #3 is a crest
#2 is a trough; #4 is a crest
Snapping your fingers most likely produces which type of energy?
sound
light
heat
electrical
Dexter looked outside and saw that it snowed. How was he able to see the snow?
Dexter's eye made light that traveled to the snow.
Beams of light traveled back and forth between Dexter's eye and the snow.
Light reflected off the snow and traveled to Dexter's eye.
The snow produced beams of light that traveled to Dexter's eye.
Quinn and Aubree use Y for "Yes" responses and N for "No" responses. Before they walked away, Aubree asked if Quinn wanted to meet in the food court, but Quinn did not get a chance to answer before her mom led her far to the other side of the parking garage.
Which source and set of signals could Quinn use so that Aubree on the other side of the parking garage could understand her message?
A. Light source – one bright flash of light, one dim flash of light, then two bright flashes of light
B. Sound source – one long sound, one short short sound, then two long sounds
C. Sound source – one loud sound, one soft sound, then two loud sounds
D. Light source – one long flash of light, one short flash of light, then two long flashes of light
What number is represented by the sequence? 0101 1000 0011 0110
2063
9835
5836
5846
Which points on the wave are the trough and the crest?
Number 1 is a crest; Number 2 is a trough
Number 2 is a crest; Number 4 is a trough
Number 1 is a crest; Number 3 is a trough
Number 4 is a crest; Number 2 is a trough
What property of this wave is represented by the letter "A"
amplitude
crest
trough
wavelength
What property of the wave is represented by the letter "B"?
amplitude
wavelength
pitch
frequency
Which wave has the greatest wavelength?
Red Wave
Orange Wave
Green Wave
Purple Wave
compare the wavelengths
1 has a longer wavelength
1 has a shorter wavelength
2 has a lower frequency
1 and 2 are the same height
What property is identified by A?
Frequency
Amplitude
Wavelength
Speed
What property is identified by D?
Frequency
Amplitude
Wavelength
Speed
What part of the wave is identified by B?
Trough
Amplitude
Crest
Speed
What part of the wave is identified by C?
Trough
Amplitude
Crest
Speed
Which wave has the lowest amplitude?
A
B
Which wave is caused by a rock dropped from the highest height? Why?
Wave A; it has the smallest amplitude
Wave B; it has the largest amplitude
Wave A; it has the smallest wavelength
Wave B; it has the largest wavelength
