Energy In Mechanical/Fluid Systems I Question Preview (ID: 1253)

Principles Of Technology Review : Unit 5 Subunit 1 Energy In Mechanical And Fluid Systems I. TEACHERS: click here for quick copy question ID numbers.

The law of conservation of energy states that
a) energy may neither be created nor destroyed; it may only be transformed.
b) energy may be created, but only in certain types of nuclear reactions.
c) the energy created by one process must be equal to that destroyed by another process.
d) energy may be created, destroyed or transformed.

A high diver steps off a diving platform that is 10 meters above the water. If no air resistance is present, during the fall there will be a decrease in the diver’s
a) gravitational potential energy.
b) kinetic energy.
c) momentum.
d) total mechanical energy.

Which of the following is the best example of increasing an object’s potential energy?
a) dropping a book
b) compressing a sponge
c) rolling a tire
d) turning on a flash light

The equation E = 1/2mv2 is used to calculate this form of energy.
a) elastic potential
b) gravitational potential
c) kinetic
d) mechanical rotational

This type of energy is stored in bonds within the nucleus of an atom; it is also the type of energy released from a fission or fusion reaction.
a) thermal
b) mechanical
c) chemical
d) nuclear

This is the random kinetic energy possessed by objects in a material at finite temperature. An object that feels hot has a lot of this.
a) thermal
b) mechanical
c) chemical
d) nuclear

The energy transferred by a force to a moving object is called
a) thermal energy.
b) mechanical energy.
c) chemical energy.
d) nuclear energy.

Which is an example of gravitational potential energy?
a) water stored behind a dam
b) an avalanche in progress
c) a pendulum at the bottom of its swing
d) an auto brake return spring

Gravitational potential energy equals
a) the work done to move an object in a horizontal direction.
b) the work done to stretch or compress elastic objects.
c) the work done to lift an object to a higher position.
d) the work done to operate an electronic device.

Which of the following objects does not demonstrates elasticity?
a) a balloon
b) a spring scale
c) a bungee cord
d) a pendulum

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