WorksheetsREVIEW IN SCIENCE 10 ( 2ND Q )
Total questions: 23
Worksheet time: 29mins
What type of electromagnetic wave has a higher frequency than visible light and a larger wavelength than x-rays
Infrared
Gamma
visible
Ultraviolet
Indicate the electromagnetic waves that are longer than Visible light.
Ultraviolet
Infrared
X ray
Microwaves
What type of wave has the largest wavelength and the lowest frequency on the electromagnetic spectrum?
Radio
Micro
Gamma
X ray
In the visible light waves what color has the highest frequency electromagnetic waves?
Red
Violet
Green
Yellow
Which electromagnetic waves are useful for Television?
Gamma
x ray
radio
microwave
Heat seeking missiles use _____________ electromagnetic technology.
Gamma
X ray
Microwave
Infrared
________________ have the highest energy and shortest wavelength of all electromagnetic waves.
Gamma
X Ray
Radio
Microwaves
As the wavelength of an electromagnetic wave gets LONGER, the frequency gets ____________.
Lower
Higher
does not change
doubles
Which wavelengths of the EM spectrum are dangerous to life?
radio, micro and gamma
gamma, infrared, and UV
Infrared, UV and X Rays
UV, X rays and Gamma
The lowest point on a wavelength is a(n) ____________.
value
trough
crest
medium
The distance between two crests or two troughs is defined as _________________
medium
wavelength
frequency
amplitude
Gamma rays and x-rays can produce molecular changes that can lead to damage in biological tissues including effects on DNA. To what 2 types of radiation do they belong?
Radiation that poses less threat to health issues.
(a)
He predicted the existence of electromagnetic waves.
(a)
He discovered X-rays
(a)
PROBLEM SOLVING:
What is the frequency of a radiation having a wavelength of 750nm?
c= 3x8^8 1nm= 10^-9 m
PROBLEM SOLVING:
Calculate the energy of a radiation having a wavelength of 1000nm.
c= 3x10^8m/s h= 6.64x10^-34 J-s 1nm= 10^-9
Calculate the energy of a radiation that has a frequency of 600MHz.
h= 6.64 x10^-34 c= 3x10^8 m/s 1MHz= 10^6 Hz
