Bellringer Which color of light bends the least and why: red, green, blue.

BellringerBellringerWhich color of light bends the least and why:

red, green, blueWhich color of light bends the least and why:

red, green, blue

WavesWavesA ReviewA Review

1.A wavelength of 2mm and a frequency of 3Hz has a speed

of_____.

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?

2. ___ reflection occurs when parallel rays of light hit a

smooth surface?

D. Regular

C. Incidental

B. Irregular

A. Diffuse

3.If a sound source is moving away from you, you will hear a

_____.

3.If a sound source is moving away from you, you will hear a

_____.

D. higher pitch

C. lower pitch

B. lower amplitude

A. higher freqeuncy

4.In _____ waves, the particles of the medium move at right angles to the

direction in which the wave is traveling.

4.In _____ waves, the particles of the medium move at right angles to the

direction in which the wave is traveling.

D. sound

C. longitudinal

B. transverse

A. compressional

5.Microwave radiation has a higher frequency than

_______.

5.Microwave radiation has a higher frequency than

_______.

D. ultraviolet

C. radio

B. gamma

A. visible

6.An opaque object has a particular color because it reflects some

wavelengths of light and _______ the rest.

6.An opaque object has a particular color because it reflects some

wavelengths of light and _______ the rest.

D. Echoes

C. Transmits

B. Reflects

A. Absorbs

7.As the frequency of a wave traveling at constant speed

increases, its _____ decreases.

7.As the frequency of a wave traveling at constant speed

increases, its _____ decreases.

D. speed

C. amplitude

B. wavelength

A. energy

8._____ mirrors are used on the passenger sides of vehicles to

allow for a wider range of view.

8._____ mirrors are used on the passenger sides of vehicles to

allow for a wider range of view.

D. Fun-house

C. Convex

B. Plane

A. Concave

9.Secondary waves CANNOT travel through

_____.

9.Secondary waves CANNOT travel through

_____.

D. plasmas

C. gases

B. liquids

A. solids

10.Place the colors of light in order from SHORTEST

wavelength to LONGEST wavelength.

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.

11.Sound is a disturbance that travels through a medium as

a(n) _____ wave.

D. longitudinal

C. transverse

B. electromagnetic

A. polarized

12.Waves combine to make a wave with larger amplitude in a

process called _____ interference.

12.Waves combine to make a wave with larger amplitude in a

process called _____ interference.

D. constructive

C. mirage

B. destructive

A. refraction

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?

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 motor

the rpms

the voltage

the wires

14.Because the light rays never meet, a concave lens can produce only a(n) _______

image.

14.Because the light rays never meet, a concave lens can produce only a(n) _______

image.

D. virtual

C. holographic

B. real

A. black & white

15.List the waves of the Electromagnetic Spectrum from LOWEST frequency to HIGHEST

frequency.

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?

16.At room temperature, the speed of sound in air is

approximately how many m/s?

D. 300,000 m/s

C. 343 m/s

B. 343 km/s

A. 300,000 km/s

17. The buildup of charges on an object is known as

_____?

17. The buildup of charges on an object is known as

_____?

D. static electricity

C. negative charge

B. static discharge

A. positive charge

18. A virtual image always appears

_______.

18. A virtual image always appears

_______.

D. upside-down

C. larger

B. upright

A. smaller

19.If something vibrates one thousand times per second, it has a frequency of 1 _______.

19.If something vibrates one thousand times per second, it has a frequency of 1 _______.

D. MHz

C. kHz

B. Hz

A. GHz

20.The colors of visible light with _____ bend less than others when passing through a prism.

20.The colors of visible light with _____ bend less than others when passing through a prism.

D. shorter wavelengths

C. longer wavelengths

B. higher frequencies

A. higher amplitudes

21. Ultraviolet rays help your body to produce

_______..

21. Ultraviolet rays help your body to produce

_______..

D. calcium

C. hormones

B. vitamin D

A. hair

22.Name the type of wave labeled C.

22.Name the type of wave labeled C.

D. Infrared

A. Ultraviolet

B. Visible

C. X-ray

23.In which medium listed in the table does sound travel

slowest?

23.In which medium listed in the table does sound travel

slowest?

C. Air @ 20°C

C. Hardwood

B. Air @ 0°C

A. Brick

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?

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.

25.Because of _______, glass prisms separate white light into the visible spectrum of colors.

D. diffusion

C. refraction

B. diffraction

A. reflection

26.In a longitudinal wave moving along a spring, areas where the

coils are farthest apart are called _____.

26.In a longitudinal wave moving along a spring, areas where the

coils are farthest apart are called _____.

D. rarefactions

C. crests

B. compressions

A. troughs

27. Match each unit on the left with what it measures on the

right.

27. Match each unit on the left with what it measures on the

right.

V

H

Ω

A

kWh

W

Energy

Power

Resistance

Voltage

Current

Time

28.A wave bending as it passes a point of land is an example of

_____.

28.A wave bending as it passes a point of land is an example of

_____.

D. diffraction

C. refraction

B. reflection

A. transmission

29. The unit associated with _____

is the hertz.

29. The unit associated with _____

is the hertz.

D. Wavelength

C. amplitude

B. frequency

A. speed

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?

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?

D. 90°

C. 70°

B. 50°

A. 30°

31.A tomato will look _______ under blue

light?

31.A tomato will look _______ under blue

light?

D. black

C. red

B. blue

A. white

32. Of the following, which is the correct speed of

light?

32. Of the following, which is the correct speed of

light?

D. 3 x 105 km/s

C. 343 m/s

B. 300,000,000 km/s

A. 3 x 108 km/s

33.Which of the following would be classified as quantitative

data?

33.Which of the following would be classified as quantitative

data?

2.44 GHz

hot

300,000 km/s

blue

transparent

22 nm

34.Sound waves with frequencies above 20,000 Hz are too high for humans to hear. This is known as

_____.

34.Sound waves with frequencies above 20,000 Hz are too high for humans to hear. This is known as

_____.

D. hyposonic

C. infrasonic

B. hypersonic

A. ultrasonic