WorksheetsHeat quiz
Total questions: 10
Worksheet time: 30mins
A 9.75-kg block of metal requires 6.14×102 kJ of thermal energy to change from a solid to a liquid at its melting point. What is the metal?
Gold
Iron
Lead
Silver
how much thermal energy is needed to convert a 2.0-kg sample of liquid methanol into a gas?
5.5×104 J
1.8×106 J
3.8×106 J
8.5×104 J
The study of heat transformation into other forms of energy is called
kinetic energy
Thermodynamics
Thermal equilibrium
Potential Energy
−273.15°C is known as
melting point
freezing point
Boiling point
absolute zero
· What instrument is shown here?
Barometer
calorimeter
Thermometer
the diagram below represents the flow of energy in heat engine .The letter x ,y and z represents energy .Which equation expresses the change in thermal energy in the heat engine ?
x=y+z
y=x+z
z=y-x
x=y-z
How much heat is absorbed by 1.00102 g of ice at 20.0°C to become water at 0.0°C?
5.6 x 105 j
3.75x 104 j
4.5 x 104
The amount of energy required to raise the temperature of one unit mass of material by one
Temperature unit is :
Heat
Specific heat
thermal energy
What is the efficiency of an engine that produces 2200 J/s while burning enough gasoline to produce 5300 J/s
42%
55%
50%
45%
Which temperature conversion is incorrect?
−273°C = 0 K
298 K = 571°C
273°C = 546 K
88 K = −185°C
