Eletrical
What component provides electrical energy to a portable device?
A battery
Why do engineers add lubricants between moving machine parts?
To reduce friction, wear, and heat
hat building material is made by mixing cement, water, and aggregates such as sand and gravel?
Concrete
What is the name of the force that pushes an aircraft forward
Thrust
What medical device is used to measure a person's body temperature?
A thermometer
What component protects an electrical circuit by melting when too much current flows through it?
A fuse
What famous inventor and engineer designed many machines, including early flying machines, during the Renaissance?
Leonardo da Vinci
What type of bridge uses a series of connected triangles to distribute loads
A truss bridge
What force opposes an aircraft's motion through the air?
Drag
What artificial device replaces a missing limb?
A prosthesis
What component stores electrical energy in an electric field?
A capacitor
Which American inventor is famous for developing the practical incandescent light bulb and establishing an electric power system?
Thomas Edison
Why do engineers sometimes install tuned mass dampers in tall buildings?
To reduce building vibrations caused by wind or earthquakes
What principle explains how a rocket can accelerate in the vacuum of space without pushing against the surrounding air?
Newton's third law of motion
What medical imaging technology uses strong magnetic fields and radio waves to create detailed images of the body's internal structures?
MRI (magnetic resonance imaging)
Who is credited with inventing the first practical telephone?
Alexander Graham Bell
Which Scottish engineer greatly improved the efficiency of the steam engine, helping drive the Industrial Revolution?
James Watt
What famous underwater tunnel connecting England and France opened in 1994?
The Channel Tunnel
What was the name of the first artificial satellite launched into space?
Sputnik 1
What type of medical device helps keep a person's heartbeat regular by delivering electrical impulses?
A pacemaker
Which British scientist discovered electromagnetic induction, a principle essential to electric generators?
Michael Faraday
Which engineer designed the Eiffel Tower, completed in Paris in 1889?
Gustave Eiffel
What famous bridge collapsed in 1940 because of wind-induced oscillations?
The Tacoma Narrows Bridge
What is the name of the spacecraft navigation technique that uses the gravitational influence of planets to change a spacecraft's trajectory or save fuel?
A gravity assist (gravitational slingshot)
What technology allows people with certain types of paralysis to control a computer or robotic device using signals from their brain?
A brain-computer interface (BCI)