Technology & Gadgets
28 questions · Answers revealed below each question · Print this set
1.Which technologies fly by pushing exhaust backward?
- A. rockets
- B. X-ray imaging
- C. Bluetooth
- D. Wi-Fi
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rockets
Did you know? They carry their own oxygen to space.
2.Which technologies run on batteries instead of gasoline?
- A. search engines
- B. 3D printers
- C. hydroelectric dams
- D. electric cars
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electric cars
Did you know? They are quieter and have fewer moving parts.
3.Which technologies make power from falling water?
- A. rockets
- B. the International Space Station
- C. the microscope
- D. hydroelectric dams
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hydroelectric dams
Did you know? Itaipu is one of the largest.
4.Which technologies turn sunlight into electricity?
- A. electric cars
- B. solar panels
- C. MRI scanners
- D. Bluetooth
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solar panels
Did you know? Photovoltaic cells do the work.
5.Which technology finds positions using satellite signals?
- A. satellite TV
- B. GPS
- C. the ordinary radio
- D. Bluetooth
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GPS
Did you know? At least four satellites fix a location.
6.Which instrument points along Earth's magnetic field?
- A. the barometer
- B. the seismograph
- C. the thermometer
- D. the compass needle
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the compass needle
Did you know? It aligns with magnetic north.
7.Which internet tools find web pages matching words?
- A. social networks
- B. antiviruses
- C. e-mail apps
- D. search engines
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search engines
Did you know? They index billions of pages.
8.Which instrument measures temperature?
- A. the thermometer
- B. MRI scanners
- C. RAM
- D. ultrasound
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the thermometer
Did you know? Mercury and alcohol were classic fillings.
9.What is the purpose of a lightning rod?
- A. To attract storms away from town
- B. To give lightning a safe path to the ground
- C. To prevent all lightning
- D. To store lightning's energy
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To give lightning a safe path to the ground
Did you know? It was Franklin's famous invention.
10.Which medical tools eradicated smallpox worldwide?
- A. ultrasound
- B. the thermometer
- C. the compass needle
- D. vaccines
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vaccines
Did you know? Smallpox was eradicated by vaccination.
11.What are electrical wires usually coated with?
- A. Mercury
- B. Plastic
- C. Gold
- D. Silver
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Plastic
Did you know? The plastic insulation protects people, not the wire.
12.Which cleaning agents kill germs on surfaces, not in the body?
- A. disinfectants
- B. dish soap
- C. laundry detergent
- D. glass cleaner
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disinfectants
Did you know? Disinfectants treat surfaces; antibiotics treat the body.
13.Which internet term is the address of a web page?
- A. a password
- B. a browser
- C. a URL
- D. a hyperlink
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a URL
Did you know? It starts with http or https.
14.Which instrument measures air pressure?
- A. radar
- B. rockets
- C. the barometer
- D. wind turbines
Show answer
the barometer
Did you know? Falling pressure often signals a storm.
15.Which tool measures electrical voltage?
- A. A thermometer
- B. A barometer
- C. An ammeter
- D. A voltmeter
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A voltmeter
Did you know? Multimeters measure volts, amps and ohms.
16.Which instrument magnifies objects too small to see?
- A. the barometer
- B. the telescope
- C. RAM
- D. the microscope
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the microscope
Did you know? A drop of pond water teems with life under it.
17.What does a smoke detector's sensor react to?
- A. Sound
- B. Heat only
- C. Light
- D. Smoke particles
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Smoke particles
Did you know? Smoke particles block or ionize the air; test the battery twice a year.
18.Which technology orbits Earth with crews aboard?
- A. the Hubble Telescope
- B. the International Space Station
- C. GPS satellites
- D. weather satellites
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the International Space Station
Did you know? It circles Earth about every 90 minutes.
19.Which technology connects devices by radio waves?
- A. wind turbines
- B. Bluetooth
- C. Wi-Fi
- D. a byte
Show answer
Wi-Fi
Did you know? It uses radio waves, not cellular towers.
20.Which imaging method images the body with sound waves?
- A. ultrasound
- B. the X-ray
- C. the MRI
- D. the CT scan
Show answer
ultrasound
Did you know? It is safe for imaging unborn babies.
21.What does a fuse do?
- A. It filters water
- B. It boosts voltage
- C. It melts to break a dangerous overload
- D. It stores energy
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It melts to break a dangerous overload
Did you know? Replacing it means finding the fault first.
22.Which technologies image the body using magnets and radio waves?
- A. MRI scanners
- B. sonar
- C. X-ray imaging
- D. the thermometer
Show answer
MRI scanners
Did you know? MRI avoids the radiation X-rays use.
23.Which technologies make light with tiny diodes?
- A. LEDs
- B. candles
- C. fluorescent tubes
- D. incandescent bulbs
Show answer
LEDs
Did you know? They use far less power than bulbs.
24.Which computing term is a group of eight bits?
- A. the keyboard
- B. software
- C. a byte
- D. a pixel
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a byte
Did you know? One byte can store one character.
25.Which technologies make electricity from fission?
- A. wind turbines
- B. hydroelectric dams
- C. solar panels
- D. nuclear power plants
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nuclear power plants
Did you know? Splitting uranium releases the heat.
26.Which computer part is the main processing chip?
- A. the CPU
- B. the keyboard
- C. the monitor
- D. the hard drive
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the CPU
Did you know? It runs a billion steps per second.
27.Which computer part is the fast, temporary working memory?
- A. the motherboard
- B. the hard drive
- C. the power supply
- D. RAM
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RAM
Did you know? It clears when the power goes off.
28.Which technology is a short-range wireless link for devices?
- A. 3D printers
- B. search engines
- C. Bluetooth
- D. the compass needle
Show answer
Bluetooth
Did you know? It is named after a medieval Danish king.
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