961A kitchen blender liquefies food and drinks mainly by using what mechanical component?
962A pressure cooker is able to cook food faster mainly because increased internal pressure does what to water’s boiling point?
963A typical zip fastener, or zipper, works by mechanically interlocking a row of what small components?
964During its spin cycle, a washing machine removes excess water from clothes mainly by using what physical effect?
965A vacuum cleaner picks up dirt and debris mainly by creating what kind of effect using a motor-driven fan?
966Most television remote controls send signals to the TV using which type of invisible light?
967WiFi and Bluetooth wireless technologies both generally rely on transmitting and receiving what kind of electromagnetic waves?
968Which instrument mounted on a car’s dashboard displays the vehicle’s current speed?
969Which instrument mounted on a car’s dashboard displays the total distance the vehicle has traveled?
970A phone or laptop charger commonly contains circuitry mainly to convert alternating current from the wall outlet into what?
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