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Quiz #16 - Magnetics and Waves

Total questions: 123

Worksheet time: 1hrs 18mins

Name
Class
Date
1.

Draw the correct motion of the magnetic field between these 2 magnets.

2.

True or False: A magnet is attracting when it pushes objects away from each other.

a)

True

b)

False

3.

How can magnets cause objects to have kinetic energy?

a)

A magnetic force can convert kinetic energy stored in a magnetic field to potential energy.

b)

Kinetic energy can convert potential energy stored in a gravitational field.

c)

A magnetic energy can convert potential energy stored in a gravitational field to kinetic energy.

d)

A magnetic force can convert potential energy stored in a magnetic field to kinetic energy.

4.

The ability to make things move or change

a)

Transfer

b)

Energy

c)

Repel

d)

Convert

5.

The energy something has because it's moving.

a)

kinetic energy

b)

potential energy

c)

magnetic energy

d)

force

6.
Which way will the magnets move after they are released?
a)
Towards each other
b)
Away from each other
c)
Not enough information
7.
Which picture has the most potential energy?
a)
Picture A
b)
Picture B
8.
Which type of energy will be present in the scenario shown below?
a)
Potential
b)
Kinetic
c)
Neither
9.
Which of the images will show an increase in potential energy stored in the magnetic field?
a)
A
b)
B
10.
How is energy being transferred in the scenario shown below?
a)
Potential --> Kinetic
b)
Kinetic --> Potential
c)
Kinetic --> Kinetic
d)
Neither
11.
Which of the images will show an increase in potential energy stored in the magnetic field?
a)
A
b)
B
12.
How does a system of magnets store potential energy in the magnetic field?
a)
The energy used to move a magnet with (same direction as) a magnetic force.
b)
The energy used to move a magnet against (opposite direction as) a magnetic force.
c)
Magnets get their potential energy from kinetic energy.
13.
The energy that is stored in an object or system
a)
kinetic energy
b)
potential energy
c)
magnetic energy
d)
force
14.
A child sets identical magnetic carts on tracks. At the end of each track is a large magnetic train that cannot move. The child uses her hand to slide the carts on each track. Which of these movements will result in the greatest increase in potential energy?
a)
Moving the cart on Track A one space to the left   <
b)
Moving the cart on Track B one space to the left <
c)
Moving the cart on Track B one space to the right >
d)
These movements each have the same change in potential energy because they each move the car the same distance.
15.

A child moves a blue magnet towards the red magnet that cannot move. What happens to the potential energy in the system of magnets?

a)

Potential energy decreases because the blue magnet train moves in the same direction as the magnetic force.

b)

Potential energy decreases because the blue magnet train moves against the magnetic force.

c)

Potential energy increases because the blue magnet train moves against a magnetic force.

d)

Potential energy does not change because the magnets in the system do not change.

16.

Look at the picture carefully.

Which screws will be attracted?

a)

iron and steel screws

b)

iron and aluminum screws

c)

steel and aluminum screws

d)

all screws

17.

What would happen when two north poles of magnets are placed together?

a)

The force will pull them together (attract).

b)

The force will push them away from each other (repel).

c)

The strength of the magnet is doubled.

18.

What would happen when the opposite poles of magnets are placed together?

a)

The force will pull them together (attract).

b)

The force will push them away from each other (repel).

c)

The strength of the magnet is doubled.

19.

True or False: All metals are attracted to magnet.

a)

True

b)

False

20.

Where is the force of attraction the strongest on a magnet?

a)

above the magnet

b)

below the magnet

c)

at the poles

d)

in the middle

21.

What do the lines around this magnet represent?

a)

North Pole

b)

South Pole

c)

Magnetic Declination

d)

Magnetic Field

22.

If you cut a magnet in half, what happens to the poles?

a)

One half gets the North Pole, the other half gets the South Pole.

b)

Both halves get only a South Pole.

c)

Both halves get only a North Pole.

d)

Both halves get a North pole and a South Pole.

23.

What is responsible for the Magnetic Field around Earth?

a)

The Sun

b)

The Earth's core

c)

The Earth's crust

d)

The Earth's mantle

24.

Look at the picture carefully.

The paper clips are . . .

a)

magnet

b)

magnetic objects

25.

Which of these materials would be attracted to a magnet?

a)

copper

b)

aluminum

c)

cobalt

d)

iron

26.

Magnetism is a _________ force

a)

non-contact

b)

contact

c)

chemical

d)

biological

27.

The two poles are called the _______ poles

a)

east and west

b)

north and east

c)

south and west

d)

north and south

28.

Unlike (opposite) poles _____, like (same) poles _____

a)

repel, attract

b)

connect, repel

c)

attract, repel

d)

repel, connect

29.
As the distance between two magnets increases (they get farther apart), the force between them:
a)
Increases
b)
Decreases
c)
Stays the Same
30.

Which object would a magnet attract?

a)

a glass bottle

b)

a piece of paper

c)

a steel paper clip

d)

a rubber eraser

31.
A magnetized iron nail is called a ________ magnet.
a)
permanent
b)
temporary
c)
horseshoe
d)
industrial
32.

A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.

a)

calculator

b)

ruler

c)

compass

d)

map

33.
Are the magnetic field lines in the picture correct?
a)
Yes, because they point from north to south.
b)
No, because they point from north to south (they're supposed to go the other way).
c)
Yes, because the North pole is on the left in all pictures.
d)
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
34.
Earth's magnetic poles are in the same place as the geographic poles.
a)
True
b)
False
35.
The needle of a compass always points _________________________.
a)
at the equator
b)
North
c)
South
d)
What's a compass?
36.
Which type of light has the lowest energy of this group?
a)
Radio
b)
Microwave
c)
Infrared
d)
Ultraviolet
37.
Which type of light has the largest wavelength of this group?
a)
X-rays
b)
Microwave
c)
Infrared
d)
Ultraviolet
38.
Which type of light has the highest energy of this group?
a)
red
b)
yellow
c)
green
d)
blue
39.
Which type of light has the smallest frequency of this group?
a)
red
b)
yellow
c)
green
d)
blue
40.

Radio waves and _______ are used in communication

a)

Microwaves

b)

Gamma rays

c)

Visible light

d)

Ultraviolet

41.
This color in the visible part of the spectrum has the lowest energy. 
a)
Blue
b)
Green
c)
Red
d)
Violet
42.
This color in the visible part of the spectrum has the highest energy.
a)
Blue
b)
Red
c)
Violet
d)
Yellow
43.
This color in the visible part of the spectrum has the smallest wavelength.
a)
Blue
b)
Red
c)
Violet
d)
Yellow
44.
This color in the visible part of the spectrum has the largest frequency.
a)
Orange
b)
Yellow
c)
Blue
d)
Green
45.
What do you have at 10^-8?
Wavelength Not Frequency
a)
Ultra Violet
b)
Visible
c)
Gamma Rays
d)
X-Ray
46.
What do you have at 10^-2?
Wavelength Not Frequency
a)
Microwaves
b)
Infrared
c)
Radio
d)
X-Ray
47.
Wavelengths on the right side of the Electromagnetic spectrum are ______________.
a)
short
b)
long
c)
average
48.

Electromagnetic waves vary in

a)

the speed they travel in a vacuum.

b)

wavelength and frequency.

c)

the way they reflect.

d)

the orientation of their electric and magnetic fields.

49.

The full range of frequencies of electromagnetic radiation is called

a)

visible light.

b)

radio waves.

c)

the electromagnetic spectrum.

d)

invisible radiation.

50.

The visible light spectrum ranges between

a)

radar waves and X-rays.

b)

television waves and infrared rays.

c)

infrared rays and ultraviolet rays.

d)

ultraviolet rays and gamma rays.

51.

Cellular telephones utilize

a)

radar waves.

b)

very high frequency waves.

c)

very low frequency waves.

d)

microwaves.

52.

Select the correct order of waves on the EMS from low to high energy

a)

Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma

b)

Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio

c)

Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio

d)

Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma

53.

How are Electromagnetic waves different from Mechanical waves?

a)

EM waves have very short wavelengths

b)

EM waves transmit energy instead of matter

c)

EM waves can travel through the vacuum of space (without particles)

d)

EM waves can change direction by reflection

54.

High frequency in EM waves equals

a)

high energy and short wavelength

b)

high energy and long wavelength

c)

low energy and short wavelength

d)

low energy and long wavelength

55.

The _______________ determines the color of visible light.

a)

wavelength (and frequency)

b)

speed

c)

amplitude

d)

particles of the medium

56.

A student builds a circuit that lights a light bulb. A second bulb is added to the same loop between the first bulb and the battery. Which statement describes the brightness of each bulb? (hint: series circuit)

a)

Each bulb will be as bright as the first bulb was

b)

The first bulb will be the same brightness, and the second bulb will be dimmer

c)

Each bulb will be dimmer than the first bulb was

d)

The first bulb will be dimmer than it was, and the second bulb will not light

57.

The images show two steps in a procedure a student used to examine an electric circuit. Which question might the student be investigating?

a)

How does changing the voltage affect the brightness of a light bulb?

b)

How does an open circuit compare with a closed circuit?

c)

Is a light bulb an electric insulator or an electric conductor?

d)

Is more energy transformed in an electric circuit in a light bulb or in a wire?

58.

Which statement best describes an electric current?

a)

Energy transfers inside of an electric device

b)

Charged particles move through a conductor

c)

Type of conductor or insulator

d)

The measurement of the electric potential energy in a circuit

59.

Adding which object to a circuit will create a potential energy difference in a circuit?

a)

switch

b)

wire

c)

light bulb

d)

battery

60.

What are the 3 main components to a simple circuit?

a)

An energy source, conducting wire and load

b)

An energy source, insulation and load

c)

An energy source, induction pathway and load

d)

An energy source, conducting wire and a switch

61.

An electric (a)    is the movement of electrically charged particles.

62.

As the electric current through a wire increases, the magnetic field around the wire becomes stronger.

a)

True

b)

False

63.

Which of the following conditions is necessary for a magnet inside a wire loop to produce an electric current? (Mechanical Energy --> Electric Energy)

a)

The magnet must be stationary

b)

The wire loop must be part of an open circuit

c)

The wire loop must already have a current running through it

d)

The magnet must be in motion

64.

By changing the current in the wire, you can change the ____ of an electromagnet.

a)

strength and charge

b)

direction and coils

c)

charge and strength

d)

strength and direction

65.

In the figure shown, what happens when the amount of current flowing in the wire coil is increased?

a)

the magnetic field becomes stronger

b)

the magnetic field disappears

c)

the position of the north and south poles is reversed

d)

the strength of the magnetic field decreases

66.

What are the ways to increase the strength of the electromagnet? (select all that apply)

a)

Increasing the current

b)

Increasing the voltage

c)

Decreasing the distance

d)

Increasing the number of coils

e)

Increasing the distance

67.

A(n) (a)   is a temporary magnet made with a current-carrying wire coil wrapped around a magnetic core.

68.

(a)   is the interaction between charges and magnets.

69.

Would you rather build: Sumo-wrestling junkbots OR racing junkbots?

a)

Sumo-wrestling

b)

Racing

70.

Betty made a simple electromagnet using just a battery and a wire. What could Betty do to increase the strength of her electromagnet?

a)

Coil the wire around a paper towel roll.

b)

Coil the wire around a nail.

c)

Coil the wire around a test tube.

d)

Coil the wire around a toothbrush.

71.

Which of the following would decrease the strength of this electromagnet?

a)

removing its iron core

b)

increasing the number of wire loops in the coil

c)

adding batteries to the circuit

d)

increasing the current through the coil

72.

Which of the following is a way to increase the strength of an electromagnet?

a)

Increase the amount of electricity running through the coil.

b)

Increase the temperature of the air around it.

c)

Replace the iron core with a plastic core.

d)

Increase the temperature of the iron core.

73.

The electromagnet picked up the entire pile of paper clips as soon as it's turned on. Which of the following might allow the electromagnet to pick up one paper clip at a time?

a)

increasing the number of batteries supplying voltage to the electromagnet

b)

increasing the distance between the electromagnet and the paper clips

c)

increasing the number of loops in the electromagnet's coil

d)

removing the iron nail from the core of the electromagnet

74.

An electromagnet could be found in which of the following objects?

a)
b)
c)
d)
75.

Frank wants to make a simple electromagnet. Which of these does Frank need to have to create the electromagnet?

a)

magnet

b)

battery

c)

iron filings

d)

light bulb

76.

True or False:


The strength of an electromagnet can be altered by increasing the number of coils around the core.

a)

True

b)

False

77.

Electromagnetic technology is used in many different ways today. Which of these are uses of this technology?

a)

high-speed trains

b)

electric generators

c)

metal detectors

d)

all of these

78.

Electromagnetic technology becomes more advanced to fill ever more complex roles. Which of these is an application of electromagnets?

a)

refrigerator coils

b)

car brake systems

c)

speaker and microphone technology

d)

all of these

79.

As the electrons flow through the wire, _______ is generated around the wire.

a)

a magnetic field

b)

gravitational potential energy

c)

a convection current

d)

elastic potential energy

80.

What are the two categories of mechanical waves based on the motion of particles?

a)

Longitudinal and transverse waves

b)

Crest and trough waves

c)

Amplitude and frequency waves

d)

Wavelength and energy waves

81.

In transverse waves, the direction of the wave is perpendicular to the direction of what?

a)

The wave's amplitude

b)

The wave's frequency

c)

The energy transfer or vibrations

d)

The wave's wavelength

82.

Which components are included in all transverse waves?

a)

Wavelength, crest, trough, amplitude, and frequency

b)

Amplitude, energy, wavelength, and direction

c)

Frequency, energy, amplitude, and speed

d)

Direction, speed, wavelength, and energy

83.

How is wavelength defined in a transverse wave?

a)

The distance from one crest to the next trough

b)

The height from the crest to the resting position

c)

The distance from one crest to the next crest

d)

The time it takes to move from one crest to the next trough

84.

What does a greater amplitude in a wave indicate?

a)

The wave carries less energy

b)

The wave is moving faster

c)

The wave carries more energy

d)

The wave has a longer wavelength

85.

What is the definition of frequency in the context of waves?

a)

The speed at which a wave travels through a medium

b)

The number of waves that pass a fixed point in one second

c)

The height of a wave from crest to trough

d)

The distance between two consecutive crests or troughs of a wave

86.

What is meant by the term 'hertz' in the study of waves?

a)

The amplitude of a wave

b)

The speed of a wave

c)

The unit of frequency of a wave

d)

The wavelength of a wave

87.

What happens to the frequency of a wave if its wavelength increases?

a)

The frequency increases

b)

The frequency remains the same

c)

The frequency decreases

d)

The frequency is not related to wavelength

88.

Which term describes the bending of a wave when it enters a different medium?

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Transmission

89.

What is the term used to describe the phenomenon when waves bend around corners or spread out after passing through a small opening?

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Transmission

90.

What is the result called when two or more waves overlap and combine?

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Interference

91.

Which of the following is NOT an application of wave-based technology?

a)

Ultrasonic technology

b)

WiFi waves

c)

Vehicle parking sensors

d)

Solar panel energy conversion

92.

Label the Transverse Wave.

a)

Wavelength

b)

Crest

c)

Amplitude

d)

Rest / Origin

e)

Trough

1
2
3
4
5
1)
2)
3)
4)
5)
93.
The part of your eye that gives it its color.  It is a muscle that controls the size of your pupil.
a)
cornea
b)
lens
c)
pupi
d)
iris
94.
Lets the light in and it is the black portion of eye.
a)
pupil
b)
retina
c)
lens
d)
cornea
95.

Which parts of your eye are transparent?

a)

Retina

b)

Optic Nerve

c)

Cornea

d)

Iris

e)

Lens

96.
This part of the eye carries the message from your eye to the part of your brain that controls vision. 
a)
cornea
b)
lens
c)
optic nerve
d)
retina
97.
Which part of the eye focuses light onto the retina? 
a)
Cornea
b)
Pupil
c)
Lens
d)
Optic Nerve
98.
What is letter E?
a)
Vitreous humor
b)
Retina
c)
Cornea
d)
Optic nerve
99.
What is the cornea?
a)
clear structure that bends light to focus on the retina
b)
white outer layer of the eyeball
c)
clear layer that forms front of the eye
d)
gel that fills space
100.
The back of the eye;  an upside-down image of whatever you are looking at is projected here. 
a)
lens
b)
cornea
c)
pupi
d)
retina
101.

What 2 parts of your eye does light refract?

a)

Retina

b)

Cornea

c)

Optic Nerve

d)

Lens

102.

What is the correct sequence (order) of how we are able to see?

a)

Optic Nerve - Retina - Lens - Cornea

b)

Cornea - Retina - Lens - Optic Nerve

c)

Lens - Cornea - Retina - Optic Nerve

d)

Cornea - Lens - Retina - Optic Nerve

103.
How are rods different than cones?
a)
rods are not located in the eye
b)
rods see black and white, cones see color
c)
there are many more cones than rods
d)
rods don't help you see
104.
What three primary colors of light are detected by your cones? 
a)
Green, red, and blue
b)
Black, gray, and white
c)
blue, red, and purple
d)
Blue, green, and purple
105.

Red Light + Green Light = ______ Light

a)

Magenta (Shade of Pink)

b)

Yellow

c)

Blue

d)

Brown

e)

Cyan (Shade of Light Blue)

106.

Red Light + Blue Light = ______ Light

a)

Magenta (Shade of Pink)

b)

Yellow

c)

Blue

d)

Brown

e)

Cyan (Shade of Light Blue)

107.

Green Light + Blue Light = ______ Light

a)

Magenta (Shade of Pink)

b)

Yellow

c)

Blue

d)

Brown

e)

Cyan (Shade of Light Blue)

108.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
109.
A student placed a pencil in a cup of water.  The pencil appears broken because light-
a)
always travels in a straight line
b)
bends when it passes through water
c)
makes the water in the glass evaporate
d)
reflects the pencil on the water's surface
110.
The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:
a)
mirror
b)
laser
c)
reflection
d)
refraction
111.
a)
Reflection
b)
Refraction
112.
Light bending as it passes through a rain drop is an example of...
a)
Refraction
b)
Reflection
113.
Refraction is the bending of a wave disturbance as it passes from one _________ into another.
a)
glass
b)
medium
c)
area
d)
boundary
114.
According to the Law of reflection, a light ray striking a mirror
a)
continues moving through the mirror in the same direction
b)
moves into the mirror at a slightly different angle
c)
bounces off the mirror toward the direction it came from
d)
bounces off the mirror at the same angle it hits.
115.

Why do we see grass as green?

a)

Green light is absorbed

b)

Green light is reflected

116.

What would you call this?

a)

Bounce back

b)

Reflection

c)

Diffraction

d)

Refraction

117.
Refraction occurs when _____________
a)
the wave's speed changes by entering a new medium
b)
a wave bounces off of a boundary
c)
waves parts meet each other
d)
waves bend around a barrier
118.

A carbon nanotube capturing light is an example of:

a)

Reflection

b)

Refraction

c)

Absorption

119.

Light waves bouncing off of this lake is an example of:

a)

Reflection

b)

Refraction

c)

Absorption

120.

The substance that a wave is passing through

a)

medium

b)

frequency

c)

wavelength

d)

gravy

121.

Sonar and echolocation use ----- to detect objects under water.

a)

Refraction

b)

Reflection

122.

witch picture is diffraction

a)
b)
c)
d)
123.

Definition: The spreading out of waves as they pass through an opening or around objects.

a)

Reflection

b)

Refraction

c)

Diffraction

d)

Resonance

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