WorksheetsG10 Q2 S1 EM Waves
Total questions: 20
Worksheet time: 20mins
Accelerating electrons may produce electromagnetic waves. These electromagnetic waves are combination of both______.
magnetic field and reverse field
electric field and ground field
magnetic field and ground field
electric field and magnetic field
Electromagnetic waves can travel in a vacuum with a velocity of __________.
1.0 x 108 m/s
1.0 x 105 m/s
3.0 x 108 m/s
3.0 x 105 m/s
How does an electric field and magnetic field oscillate with each other?
Perpendicular with each other.
Parallel with each other.
Align with each other.
Back and forth with each other.
EM waves can be related in this equation, c = fλ . What is c in the equation?
speed of frequency
speed of molecules
speed of light
speed of particles
radio
visible light
xray
gamma
Which wave has the longest wavelength?
microwave
radio
gamma
visible light
When the wavelength increases the frequency will______.
increase
decrease
remain same
none of these
Which of these lists the EM waves is from highest to lowest frequency?
Radio - Micro - Gamma - Visible light - UV - Xrays - Infrared - Xrays
Radio - Micro - Infrared - Visible light - UV - X - Gamma waves
Gamma - Xray - UV - Visible light - Infrared - Micro - radio
none
Frequency is a measure of______.
length of the wave
height of the wave
number of waves a second
number of waves an hour
Which of the following EM waves has the highest energy?
X Rays
Radio Waves
Gamma Waves
Microwaves
What is the correct equation for calculating wave speed?
wave speed = frequency / wavelength
wave speed = frequency x wavelength
frequency = wave speed x wavelength
frequency=wavelength/wave speed
Associate the illustrations below on how wavelength and frequency of EM waves are related.
A. Longer wavelength electromagnetic waves have lower frequencies.
B. Longer wavelength electromagnetic waves have upper frequencies.
C. Longer wavelength electromagnetic waves have higher frequencies.
D. Longer wavelength electromagnetic waves have greater frequencies.
He formulated the Electromagnetic Theory which says an oscillating electric current should be capable of radiating energy in the form of electromagnetic waves.
James Clerk Maxwell
Heinrich Hertz
Michael Faraday
Andre Ampere
Who discovered X-rays?
Heinrich Hertz
Wilhelm Conrad Roentgen
James Maxwell
Michael Faraday
What electromagnetic wave is sometimes called heat rays?
gamma rays
infrared
radio waves
visible light
Which of the following is NOT true?
EM waves can travel through a vacuum.
EM waves have an electric field that travels perpendicular with the magnetic field.
EM waves form when moving charged particles transfer energy through a field.
EM waves need a medium to propagate.
Our eyes are sensitive to electromagnetic waves of wavelengths ranges from 4x10^-7 m to 7x10^-7 m. What type of EM wave describes this?
radio waves
visible spectrum
gamma rays
UV rays
Which of the following scientists formulated the principle of electromagnetic induction?
James Clerk Maxwell
Heinrich Hertz
Michael Faraday
Andre Ampere
Which property spells the difference between infrared and ultraviolet raidation?
Color
Speed in vacuum
Wavelength
None
