Science 11-PRETEST-Q2
Quiz by JOCELLE VISTAL
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- Q1
Which electromagnetic wave has the highest energy?
Visible light
Gamma rays
Ultravioletwave
Radiowave
30s - Q2
What happens to the frequency and wavelength if the energy of the wave decreases?
wavelength increases, frequency decreases
wavelength decreases, frequency decreases
wavelength decreases, frequency increases
wavelength increases, frequency increases
30s - Q3
Radio waves, X-ray waves, and microwaves are detected to be traveling in a vacuum. If the waves have a wavelength of 2 x 103 m, 2 x10-9 m, 2 x 10-1 m respectively, which of the three travels the fastest?
microwaves
They all travel at the same speed.
radiowaves
X-ray waves
30s - Q4
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?
2. 72 x1016 m
0.04 m
3.31 m
2. 72x1010 m
30s - 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 10-34Js. How much energy does the wave carry?
4.11 x 1014J
4.11 x10-14 J
4.11 x1014 J·s
4.11 x10-14 J·s
30s - Q6
What will happen if the antenna of the analog television is placed inside the house?
Pictures and sound transmitted are weak due to the location of the transmitter.
Pictures and sound transmitted are strong due to their enclosed location.
Pictures are blurred, but the sound is good due to the transmitter’s location
Pictures are clear, but the sound is intermittent due to its enclosed location
30s - Q7
Which is NOT included in the group for radio communication?
WIFI Router
Oscillator
Amplifier
Antennas
30s - Q8
Which causes sugar, water, and fat to vibrate at extremely high frequencies?
Microwave energy
Radiation energy
Cavity magnetron
Kinetic energy
30s - Q9
Which item must NOT be placed inside the microwave oven?
Styrofoam
Foil
Hard-boiled eggs
Pyrex cup
30s - Q10
Which is the center of transmitting and receiving radio waves towards television and radio communication?
Wires
LCD’s
Base Station Antenna
Speakers
30s - Q11
What form of electromagnetic radiation has the most energy?
Radio waves
Gamma-rays
X-rays
Microwaves
30s - Q12
Which is NOT a probable result of the human tissue’s exposure to ionizing radiation?
Viral infection
Death
Cellular damage
Cancer
30s - Q13
What does ionizing radiation remove from atoms?
Neutrons
Protons
Nucleus
Electrons
30s - Q14
What is the difference between ionizing and non-ionizing 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.
Non-ionizing radiation is high-energy radiation, but ionizing radiation is low-energy radiation.
30s - Q15
How can we protect ourselves from harmful electromagnetic radiation?
A. Limitsun exposure
A. Increasecell phone use
A. Spend time outdoors
A. Put your wireless smartphone near
30s