SCIENCE 10_PRE-TEST Second Quarter
Quiz by Salvacion Adona
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- Q1
Which electromagnetic wave has the highest energy?
Gamma rays
Visible light
Radio wave
Ultraviolet wave
45s - Q2
What happens to the frequency and wavelength if the energy of the wave decreases?
wavelength increases, frequency increases
wavelength increases, frequency decreases
wavelength decreases, frequency decreases
wavelength decreases, frequency increases
45s - Q3
Radio waves, X-ray waves, and microwaves are detected to be travelling in a vacuum. If the waves have a wavelength of 2 x 103 m, 2 x 10-9 m, 2 x 10-1 m respectively, which of the three travels the fastest?
X-ray waves
Microwaves
Radio waves
They all travel at the same speed.
60s - Q4
An FM radio station broadcasts at 90.5 MHz (9.05 x 107 Hz). The radio wave travels at the speed of light, what is its wavelength?
3.31 m
0.04 m
2. 72 x 1016 m
2. 72 x1010 m
60s - Q5
A gamma ray with a frequency of 6.2 x 1019Hz is fired on an unknown object in space. The value of Planck’s constant is 6.626 x 10-34 Js. How much energy does the wave carry?
4.11 x 1014 J·s
4.11 x 10-14 J
4.11 x 1014 J
4.11 x 10-14 J·s
30s - Q6
What will happen if the antenna of the analog television is placed inside the house?
Pictures and sound transmitted are strong due to its enclosed location.
Pictures are clear, but the sound is intermittent due to its enclosed location
Pictures and sound transmitted are weak due to the location of the transmitter
Pictures are blurred, but the sound is good due to the transmitter’s location
45s - Q7
Which is NOT included in the group for radio communication?
Oscillator
Amplifier
Antennas
WIFI Router
45s - Q8
Which causes sugar, water, and fat to vibrate at extremely high frequencies?
Kinetic energy
Microwave energy
Radiation energy
Cavity magnetron
45s - Q9
Which item must NOT be placed inside the microwave oven?
Foil
Styrofoam
Pyrex cup
Hard-boiled eggs
45s - Q10
Which is the center of transmitting and receiving radio waves towards television and radio communication?
Wires
Base Station Antenna
Speakers
LCD’s
45s - Q11
What form of electromagnetic radiation has the most energy?
Gamma-rays
Radio waves
Microwaves
X-rays
45s - Q12
Which is NOT a probable result of the human tissue’s exposure to ionizing radiation?
Cancer
Death
Cellular damage
Viral infection
45s - Q13
What does ionizing radiation remove from atoms?
Nucleus
Electrons
Neutrons
Protons
45s - Q14
What is the difference between ionizing and non-ionizing radiation?
Non-ionizing radiation is high energy radiation, but ionizing radiation is low energy radiation.
Ionizing radiation is a naturally occurring phenomenon and non-ionizing radiation is only created artificially.
Ionizing radiation has high energy that can remove an electron from the atom, but non-ionizing does not.
Non-ionizing radiation is a naturally occurring phenomenon and ionizing radiation is only created artificially.
45s - Q15
How can we protect ourselves from harmful electromagnetic radiation?
Spend time outdoors
Limit sun exposure
Increase cell phone use
Put your wireless smartphone near
45s