EXAM 2026 VERIFIED QUESTIONS AND CORRECT
ANSWERS GRADED A+
The device that converts electric energy to mechanical energy by the use of
magnetic forces is a (an)
A. generator.
B. transformer.
C. motor.
D. rectifier.
C
Which phase change releases energy?
A. melting
B. evaporation
C. condensation
D. sublimation
C
Which of the following contains the greatest amount of thermal energy?
A. burning candle
B. cup of coffee
C. oak tree
D. lake
,D
The input electrical energy of an overhead projector results in light emission, heat
emission, and mechanical motion of the fan. This is a demonstration of
A. conservation of energy.
B. excess input energy.
C. decrease in entropy.
D. total loss of energy.
A
The splitting of the nucleus of U-235 into two or more fragments is called
A. alpha decay.
B. beta decay.
C. fission.
D. fusion.
C
Which type of radiation has the lowest energy?
A. x-rays
B. visible light
C. infrared
D. radio
D
,A security mirror located in the back corner of a convenience store to enable a
view of the entire store uses a
A. convex mirror.
B. concave mirror.
C. flat mirror.
D. parabolic mirror.
A
What is the power drawn by a 120-volt microwave oven that is rated for 15 amps?
A. 0.125 joules
B. 8.0 watts
C. 1800 watts
D. 135 joules
C
According to the theory of plate tectonics, the energy that drives crustal plate
movement originates in
A. earthquakes.
B. lithosphere fluidity.
C. seafloor spreading.
D. mantle convection.
D
, The time known as the "coal age" occurred during which geologic era?
A. Precambrian
B. Cenozoic
C. Mesozoic
D. Paleozoic
D
Identify the best method of determining the age of a single rock sample that
contains no fossils.
A. radioactive dating
B. examination of mineral content
C. application of the law of superposition
D. crystal analysis
A
Which of the following surface ocean currents is known for being warm, fast, and
narrow?
A. California Current
B. Canary Current
C. West Wind Drift
D. Gulf Stream
D