Science 10 Assignment 4.2 (39 marks)
1.
Describe how thermal energy is transferred through the hydrosphere (2 marks)
2.
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4.
Show how water moves through the biosphere in a cyclic manner. (3 marks)
Identify the sources of water vapour in the atmosphere. (2 marks)
State the percent of Earth’s surface that is covered by water. (1 mark)
5.
Create a pie chart illustrating the sources of water vapour in the atmosphere.
(3 marks)
6.
Define the term “specific heat capacity” (1 mark)
7.
Identify the factors that must be considered in order to determine the specific heat capacity of any substance. (3 marks)
8.
The theoretical heat capacity of water is 4.19 J/g˚C. Aluminum has a theoretical specific heat capacity of 0.897 J/g˚C. If 1.00 g of water and 1.00 g of aluminum are both heated to 50.0 ˚C, which substance will contain the greater quantity of thermal energy ? (1 mark)
9.
Write an equation for the heat of fusion, and define each term in the equation
(3 marks)

10.
Define the term “heat of vaporization” (1 mark)
11.
What is the difference between the heat of fusion and the heat of vaporization of a substance. (2 marks)
12.
Calculate the amount of thermal energy required to increase the temperature of 3.00 kg of aluminum from 20.0 ˚C to 80.0 ∆C. The theoretical specific heat capacity of aluminum is 0.897 J/g˚C. (5 marks)
13.
Calculate the amount of thermal energy required to increase the temperature of 2.00 kg of water by 20.0 ˚C. The theoretical specific heat capacity of water is 4.19 J/g˚C. (5 marks)
14.
Calculate the amount of energy absorbed when 45.0 g of ice at 0.0 ˚C melts.
The heat of fusion of water is 6.01 kJ/mol, and the molar mass of water is
18.02 g/mol. (5 marks)
15.
Explain why 100.0 g of liquid water at 100.0 ˚C contains less thermal energy than 100.0 g of water vapour at 100.0 ˚C. (2 marks)