Radiation — Unit test Answers
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A thermometer is placed in water in order to measure the water’s temperature. What would cause the liquid in the thermometer to rise?
A
The molecules in the water move closer together.B
The molecules in the thermometer’s liquid spread apart.C
The kinetic energy of the water molecules decreases.D
The kinetic energy of the thermometer’s liquid molecules decreases.22
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This chart lists four examples of two objects that are in contact.Which statement accurately describes the flow of heat in each example?
A
Heat will flow from Object 1 to Object 2 in examples 2 and 4, and heat will flow from Object 2 to Object 1 in examples 1 and 3.B
Heat will flow from Object 1 to Object 2 in examples 1 and 3, and heat will flow from Object 2 to Object 1 in examples 2 and 4.C
Heat will flow from Object 1 to Object 2 in Example 3, and heat will flow from Object 2 to Object 1 in examples 1, 2, and 4.D
Heat will flow from Object 1 to Object 2 in examples 1, 2, and 4, and heat will flow from Object 2 to Object 1 in Example 3.23
Which explains why conduction is unlikely when ice is placed on a freezer shelf?
A
There is no direct contact.B
The ice is too cold.C
The shelf acts as an insulator.D
The ice and shelf are the same temperature.24
Sayid recorded the temperatures of four substances in a chart.
A
The particles in substance W have a greater average kinetic energy than the particles in substance Z.B
The particles in substance X have a greater average kinetic energy than the particles in substance Z.C
The particles in substance W have a lower average kinetic energy than the particles in substance X.D
The particles in substance Z have a lower average kinetic energy than the particles in substance Y.25
Which substance is most likely to heat up the fastest?
A
water (specific heat of 4.19 J/g • C°)B
copper (specific heat of 0.39 J/g • C°)C
aluminum (specific heat of 0.90 J/g • C°)D
dry air (specific heat of 1.01 J/g • C°)Did you find these answers helpful?
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