Ch 14 Question Preview (ID: 6219)


Ch 14 Heat. TEACHERS: click here for quick copy question ID numbers.

In al cooling systems energy is transfered as heat from one substance to another, leaving the first substance with less energy and with a lower temperature
a) true
b)
c)
d) false

Heating minimizes undesirable energy transfers
a) true
b)
c)
d) false

According to the first law of thermodynamics
a) there is no such thing as a perpetual motion machine
b) in any process thee is a decrease in potential energy
c) the total energy used in any process is conserved
d) the energy of a system is constant

The Farenheit temperature scale is defined by which of the following temperatures
a) water boils at 100 degrees and freezes at 32 degrees
b) liquid water turns to gas at 100 degrees and to a solid at 0 degrees
c) water evaporates at 212 degrees and freezes at 0 defrees
d) water boils at 212 degrees and freezes at 32 degrees

temperature is a mesaure of average _______ energy of an object\'s particles
a) mechanical
b) light
c) potential
d) kinetic

The temperature at which all molecular motion stops is
a) 0 degrees C
b) all of the answers are correct
c) 0 degrees K
d) 0 degrees F

The energy transferred between objects with a different temperature is
a) absolute zero
b) cold
c) potential
d) heat

_____ describes how much energy is required to raise an object\'s temperature
a) conduction
b) convection
c) specific heat
d) radiation

_____ does not involve the movement of matter
a) conduction
b) none of the answers are correct
c) heat
d) radiation

when energy is transformed, the amount of usable energy
a) decreases
b) none of the answers are correct
c) increases
d) remains constant

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