Bellringer
Which color of light bends the least and why: red,
green, blue
Waves
A Review
1.A wavelength of 2mm and a
frequency of 3Hz has a speed
of_____.
•6
mm/s
2. ___ reflection occurs when
parallel rays of light hit a smooth
surface?
A. Diffuse
B. Irregular
C. Incidental
D. Regular
3.If a sound source is moving away
from you, you will hear a _____.
A. higher freqeuncy
B. lower amplitude
C. lower pitch
D. higher pitch
4.In _____ waves, the particles of the
medium move at right angles to the
direction in which the wave is traveling.
A. compressional
B. transverse
C. longitudinal
D. sound
5.Microwave radiation has a
higher frequency than _______.
A. visible
B. gamma
C. radio
D. ultraviolet
6.An opaque object has a particular color
because it reflects some wavelengths of light
and _______ the rest.
A. Absorbs
B. Reflects
C. Transmits
D. Echoes
7.As the frequency of a wave
traveling at constant speed
increases, its _____ decreases.
A. energy
B. wavelength
C. amplitude
D. speed
8._____ mirrors are used on the
passenger sides of vehicles to allow
for a wider range of view.
A. Concave
B. Plane
C. Convex
D. Fun-house
9.Secondary waves CANNOT
travel through _____.
A. solids
B. liquids
C. gases
D. plasmas
10.Place the colors of light in order
from SHORTEST wavelength to
LONGEST wavelength.
Violet
Indigo
Blue
Green
Yellow
Orange
Red
11.Sound is a disturbance that
travels through a medium as a(n)
_____ wave.
A. polarized
B. electromagnetic
C. transverse
D. longitudinal
12.Waves combine to make a wave
with larger amplitude in a process
called _____ interference.
A. refraction
B. destructive
C. mirage
D. constructive
13.You have recently shown an interest in the inner workings of
an electric motor. You wonder exactly how it can go faster when
you press the accelerator with your foot. You plan to design an
experiment to prove that pressing the accelerator increases the
voltage to the electric motor, therefore making it rotate faster. You
devise a hypothesis that states that if voltage is increased to the
electric motor, then the motor will increase its revolutions per
minute. Which 2 of the following factors, in this scenario, would
be classified as the controlled variables?
the wires
the rpms
the voltage
the motor
14.Because the light rays never
meet, a concave lens can produce
only a(n) _______ image.
A. black & white
B. real
C. holographic
D. virtual
15.List the waves of the Electromagnetic
Spectrum from LOWEST frequency to
HIGHEST frequency.
Radio waves
Microwaves
Infrared
Visible light
Ultraviolet
X-rays
Gamma rays
16.At room temperature, the speed
of sound in air is approximately how
many m/s?
A. 300,000 km/s
B. 343 km/s
C. 343 m/s
D. 300,000 m/s
17. The buildup of charges on
an object is known as _____?
A. positive charge
B. static discharge
C. negative charge
D. static electricity
18. A virtual image
always appears _______.
A. smaller
B. upright
C. larger
D. upside-down
19.If something vibrates one
thousand times per second, it has a
frequency of 1 _______.
A. GHz
B. Hz
C. kHz
D. MHz
20.The colors of visible light with
_____ bend less than others when
passing through a prism.
A. higher amplitudes
B. higher frequencies
C. longer wavelengths
D. shorter wavelengths
21. Ultraviolet rays help your
body to produce _______..
A. hair
B. vitamin D
C. hormones
D. calcium
22.Name the type of
wave labeled C.
A. Ultraviolet
B. Visible
C. X-ray
D. Infrared
23.In which medium listed in the
table does sound travel slowest?
A. Brick
B. Air @ 0°C
C. Hardwood
C. Air @ 20°C
24.The speed of a wave on a guitar string is
220m/s and the frequency is 110Hz. What is
the wavelength of the wave?
2 m/s
25.Because of _______, glass
prisms separate white light into the
visible spectrum of colors.
A. reflection
B. diffraction
C. refraction
D. diffusion
26.In a longitudinal wave moving along
a spring, areas where the coils are
farthest apart are called _____.
A. troughs
B. compressions
C. crests
D. rarefactions
27. Match each unit on the left with
what it measures on the right.
kWh
Time
W
Current
A
Voltage
Ω
Resistance
H
Power
V
Energy
28.A wave bending as it passes a
point of land is an example of _____.
A. transmission
B. reflection
C. refraction
D. diffraction
29. The unit associated
with _____ is the hertz.
A. speed
B. frequency
C. amplitude
D. Wavelength
30.Suppose that a reflected light wave has an
angle of reflection of 20°. What must be the angle
be between the reflecting surface and the original
beam of light?
A. 30°
B. 50°
C. 70°
D. 90°
31.A tomato will look
_______ under blue light?
A. white
B. blue
C. red
D. black
32. Of the following, which is
the correct speed of light?
A. 3 x 108 km/s
B. 300,000,000 km/s
C. 343 m/s
D. 3 x
5
10
km/s
33.Which of the following would be
classified as quantitative data?
22 nm
300,000 km/s
transparent
hot
blue
2.44 GHz
34.Sound waves with frequencies above
20,000 Hz are too high for humans to hear.
This is known as _____.
A. ultrasonic
B. hypersonic
C. infrasonic
D. hyposonic