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Pentathlon Science

Total questions: 62

Worksheet time: 36mins

Name
Class
Date
1.

The lowest allowable energy state of an atom is known as what?

a)

Ground state

b)

Ionization energy

c)

Absolute zero

d)

Critical state

e)

Base level

2.

How can lasers remove tattoos from skin?

a)

by burning away skin cells containing tattoo ink

b)

by chemically changing tattoo ink so that it is invisible

c)

by breaking down the molecules that make up the ink

d)

by changing the color of tattoo ink to match the surrounding skin

e)

Laser tattoo removal is not currently possible.

3.

The idea that emitted light can serve as a “fingerprint” to identify the atoms within a sample is the basis for

what technique?

a)

Atomic spectroscopy

b)

Radiometric dating

c)

the photoelectric effect

d)

Inertial confinement

e)

Mass spectrometry

4.

In what year did Max Planck propose his quantum hypothesis?

a)

1704

b)

1808

c)

1887

d)

1900

e)

1921

5.

The National Ignition Facility is a research center focused on what process?

a)

Nuclear fusion

b)

Laser cooling

c)

LASIK

d)

Atomic spectroscopy

e)

Optical tweezing

6.

The first laser operated at what wavelength?

a)

532 nm

b)

694 nm

c)

755 nm

d)

800 nm

e)

1,064 nm

7.

During his investigation of the photoelectric effect, Philipp Lenard observed that if light of a certain

frequency did not eject electrons from a metal, then increasing the intensity of the light

a)

had no effect

b)

caused electrons to be ejected

c)

produced sparks

d)

caused the light to change color

e)

oxidized the illuminated metal

8.

How was helium first detected in 1868?

a)

as a product of a nuclear reaction

b)

as a product of a chemical reaction

c)

through chemical analysis of an atmospheric sample

d)

as part of a drilling operation

e)

through atomic spectroscopy of the Sun

9.

If the frequency of a wave is 2 Hz, what is its period?

a)

2 s

b)

1 s

c)

0.5 s

d)

0.2 s

e)

There is not enough information to tell.

10.

LASIK surgery involves using lasers to reshape what part of the eye?

a)

pupil

b)

iris

c)

lens

d)

cornea

e)

retina

11.

Which of the following represents the single largest application for excimer lasers?

a)

Laser pointers

b)

Holography

c)

Stereolithography

d)

Semiconductor fabrication

e)

Barcode readers

12.

Which type of laser is BEST suited for use in CD/DVD players?

a)

gas laser

b)

laser diode

c)

solid-state laser

d)

excimer laser

e)

maser

13.

In what year was the first laser barcode scanner used?

a)

1962

b)

1968

c)

1974

d)

1985

e)

1992

14.

As a wave travels between two points in a medium, it transfers

a)

energy only

b)

matter only

c)

both energy and matter

d)

neither energy nor matter

e)

The answer depends on whether the wave is mechanical or electromagnetic.

15.

Which of the following types of electromagnetic radiation has the shortest wavelength?

a)

Infrared light

b)

Radio waves

c)

Visible light

d)

X-rays

e)

Gamma rays

16.

Which of the following statements about photons is TRUE?

a)

A photon has a small but measurable mass.

b)

The speed of a photon is proportional to its frequency.

c)

The energy of a photon is proportional to its frequency.

d)

Photons have zero momentum.

e)

Photons cannot be described as waves.

17.

Which of the following is NOT an example of an electromagnetic wave?

a)

Microwaves

b)

Sound waves

c)

X-rays

d)

Visible light

e)

Radio waves

18.

Which of the following statements about light is TRUE?

a)

Light has properties of neither particles nor waves.

b)

Light can be described exclusively as a particle.

c)

Light can be described exclusively as a wave.

d)

Light exhibits properties of both particles and waves.

e)

There is always a 50/50 chance of light being measured as a wave or a particle.

19.

Which of the following lasers are commonly used for surgical procedures due to their 10.6-m

wavelength?

a)

Excimer lasers

b)

Carbon dioxide lasers

c)

Ruby lasers

d)

Diode lasers

e)

Nd:YAG lasers

20.

An atom emits a photon when one of its orbital electrons

a)

moves from a higher to a lower energy level

b)

moves from a lower to a higher energy level

c)

is completely removed from the atom

d)

becomes thermally excited

e)

is ejected from a metal surface

21.

In a photoelectric effect experiment, suppose that ultraviolet light was observed to eject electrons from a

metal surface. Which of the following types of radiation would definitely eject electrons from the same

surface?

a)

Microwave

b)

Infrared

c)

X-ray

d)

Visible light

e)

Radio

22.

Which of the following is a common use for laser pointers?

a)

to highlight certain items in a presentation

b)

as part of surveying equipment

c)

as part of surveying equipment

d)

as part of a light show at entertainment venues

e)

all of the above

23.

If an atom of boron has 5 protons and 6 neutrons, how many electrons must it have?

a)

5

b)

6

c)

10

d)

11

e)

cannot be determined from this information

24.

According to the Bohr model, electrons can move to higher energy levels. Which of the following would be

the best analogy for this process?

a)

walking up a ramp

b)

stretching a rubber band

c)

diving underwater

d)

changing lanes on a road

e)

stepping up a staircase

25.

What is the term for the number of oscillations per unit time of any wave or repeating event?

a)

Frequency

b)

Spacing

c)

Wavelength

d)

Period

e)

Separation

26.

Optical tweezers rely on the fact that photons have

a)

Mass

b)

Charge

c)

Momentum

d)

Heat

e)

Color

27.

What is light composed of?

a)

air molecules

b)

charged particles

c)

oscillating electric fields

d)

oscillating magnetic fields

e)

electric and magnetic fields oscillating together

28.

Not all neon lights actually contain neon gas. True neon lights are what color?

a)

reddish-orange

b)

red

c)

blue

d)

green

e)

yellow

29.

Charles Townes’ original method for producing stimulated emission used what type of electromagnetic

waves?

a)

Radio waves

b)

Microwaves

c)

Visible light

d)

Ultraviolet

e)

X-rays

30.

Which of the following laser techniques have been used to measure the elasticity of DNA?

a)

confocal laser scanning microscopy

b)

laser cooling

c)

laser-induced fusion

d)

optical tweezers

e)

photolithography

31.

Which of the following statements about the photoelectric effect is TRUE?

a)

X-rays are necessary to produce the effect.

b)

It takes several minutes for electrons to be emitted from a metal surface.

c)

Higher frequency light causes electrons to be emitted with greater energy.

d)

Increasing the intensity of the light always causes more electrons to be emitted.

e)

It can only be explained with a wave model of light.

32.

Which of the following is TRUE regarding electromagnetic waves?

a)

All electromagnetic waves travel at the speed of light.

b)

All electromagnetic waves travel at the speed of sound.

c)

The speed of an electromagnetic wave depends on its frequency.

d)

The speed of an electromagnetic wave depends on the temperature.

e)

Each electromagnetic wave has a unique speed.

33.

Which of the following statements about Planck’s constant is TRUE?

a)

It remains unknown to this day.

b)

It relates the energy of a photon to its frequency.

c)

It is not truly constant because it varies from one region of the universe to another.

d)

It is commonly expressed in units of seconds.

e)

It is equal to the energy of a single photon.

34.

A standard incandescent light bulb typically converts about how much of the energy it consumes into

visible light?

a)

95% or more

b)

75%

c)

50%

d)

25%

e)

5% or less

35.

Which scientist believed that human eye contained light rays that were emitted from the eye?

a)

Aristotle

b)

Democritus

c)

Empedocles

d)

Alhazen

36.

Which scientist believed that the human eye contained water. He thought that the eye reflected light traveling through air.

a)

Aristotle

b)

Democritus

c)

Empedocles

d)

Alhazen

37.

"Father of Modern Optics" - he wrote a book explaining that light did not originate from the eye, but was affected by it.

a)

Aristotle

b)

Democritus

c)

Empedocles

d)

Alhazen

38.

Through the study of anatomy, be promoted the idea that water, not air, brought light to the eye.

a)

Aristotle

b)

Democritus

c)

Empedocles

d)

Alhazen

39.

Light can be thought of as streams of tiny particles emitted by a light source.

a)

the particle theory of light

b)

the stream theory of light

c)

the source theory of light

d)

the electromagnetic theory of light

40.

Which scientist developed the particle theory of light?

a)

Thomas Young

b)

Christiaan Huygens

c)

Isaac Newton

d)

Albert Einstein

41.

Which scientist developed the wave-particle duality theory?

a)

Thomas Young

b)

Christiaan Huygens

c)

Isaac Newton

d)

Albert Einstein

42.

Which scientist developed did the "double-slit experiment", and showed that light consisted of particles, but also acted like waves?

a)

Thomas Young

b)

Christiaan Huygens

c)

Isaac Newton

d)

Albert Einstein

43.

Which scientist proposed that light moved through space similar to ocean waves?

a)

Thomas Young

b)

Christiaan Huygens

c)

Isaac Newton

d)

Albert Einstein

44.

This theory states that a photon is both a particle and travels in waves, and opened up a new branch of science with quantum physics.

a)

particle theory of light

b)

the electromagnetic theory

c)

the wave-particle duality theory

d)

wave theory of light

45.

What property of this wave is represented by the letter "A"

a)

amplitude

b)

crest

c)

trough

d)

wavelength

46.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
47.
The highest point on a wave is:
a)
the crest
b)
the trough
c)
the top
d)
the coast 
48.
The lowest point on a wave is the:
a)
Amplitude
b)
Crest
c)
Trough
d)
Wavelength
49.
The number of wavelengths that pass a point each per second is:
a)
frequency
b)
period
c)
longitudinal 
d)
transverse wave 
50.
When the frequency of a wave increases, what happens to the wavelength?
a)
The wavelength is not directly affected by the frequency of a wave.
b)
The wavelength increases.
c)
The wavelength decreases.
d)
More specific information is needed to form a conclusion about the wavelength.
51.
A mechanical wave cannot travel through...
a)
a vacuum(empty space).
b)
water.
c)
air. 
d)
glass.
52.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
53.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
54.
regular disturbances that carry energy through matter or space
a)
crest
b)
energy
c)
wave
d)
trough
55.
which material does sound travel the fastest?
a)
solid 
b)
liquid 
c)
gases
56.
When a wave strikes and object and bounces off. (example echo)
a)
medium
b)
refraction
c)
reflection
d)
interference
57.
When a wave bends as it passes through at an angle from one medium to another.(example: pencil in a glass of water-)
a)
medium
b)
refraction
c)
reflection
d)
interference
58.
What kind of wave is pictured below?
a)
compressional wave
b)
transverse wave
c)
sound wave
d)
mechanical wave
59.
How would a person measure the wavelength on this sound wave?
a)
dense to less dense
b)
trough to crest
c)
compression to compression
d)
beginning of illustration to the end
60.

When light shines through a prism it creates ________________

a)

visible light

b)

infrared radiation

c)

ultraviolet rays

d)

electromagnetic wave

61.

Compressions are...

a)

associated with transverse waves

b)

associated with longitudinal waves

c)

light waves

d)

visible light

62.
Which letter shows reflection? 
a)
Pathway A
b)
Pathway B
c)
Pathway C
d)
Pathway D