What is the size of the land where the radio antenna is located?
China builds massive radio antenna facility

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Science, Engineering
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11th Grade - University
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3700 square kilometers
5000 square kilometers
2500 square kilometers
4200 square kilometers
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the frequency range of the ELF waves emitted by the radio antenna?
1 to 1000 Hertz
5 to 200 Hertz
10 to 500 Hertz
0.1 to 300 Hertz
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which military equipment could potentially use the ELF waves?
Drones
Chinese military submarines
Tanks
Military aircraft
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Besides military use, what is another application of the radio antenna?
Detecting earthquakes
Weather forecasting
Satellite communication
Traffic monitoring
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What else can the radio antenna detect apart from earthquakes?
Forest fires
Volcanic eruptions
Minerals
Tsunamis
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