- What is the formula for density? density=mass+volume density=mass/volume square : I density=masstimes volume
- Use the following information to answer the next question A group of students are painting three aluminurconducting an experiment to investigate albedo. They model albedo by . They measure the initial temperature inside each can and then shine a light onto the cans. After a period of time they record the final temperature. Variables 1. Colour of the can 2. Time the light shines on each can 3. Change in temperature 16. Match the variables numbered above with the type of variable listed below. Variable: __ __ __ Type: Manipulated Responding Controlled (Record your three-digit answer in the numerical-response section on the answer sheet.) __ 17. How much thermal energy is required to melt 5.00 g of ice with no change in temperature? (Record your three-digit answer in the numerical-response section on the answer sheet.) 18. 4.53 kJ of thermal energy is needed to heat a sample of ice from -56.0^circ C to -29.5^circ C The theoretical specific heat capacity of ice is 2.10J/g^circ C The mass of the ice sample is __ g. (Record your three-digit answer in the numerical.-response section on the answer sheet.)
- Section II - Short Answer Response (8 marks) will!) 21. How much energy is required to increase the temperature of 750.0 g of seawater by 30.0^circ C square 22. How much thermal energy is required to melt 4.525 mol mol of ice 0.0^circ C to liquid water at 0.0^circ C : square 23. What is the specific heat capacity of a substance if it requires 2334 J of energy to change the temperature of 40.0 g of the substance by 15^circ C ? Section III: Long Answer Response (8 marks) 24. Describe the greenhouse effect and how it both positively and negatively affects Earth's delicate radiation budget. square 2
- Choose the correct statement. √ Progress: 1/8 For a nuclear chain reaction to release large amounts of energy, the number of neutrons emitted must increase. For a nuclear chain reaction to release large amounts of energy, the number of neutrons emitted must stay the same. For a nuclear chain reaction to release large amounts of energy, the number of neutrons emitted must decrease
- Choose the correct statement. A chain reaction occurs when a neutron stikes a nucleus and another proton is emitted. A chain reaction occurs when a neutron stikes a nucleus and is just absorbed. A chain reaction occurs when a neutron stikes a nucleus and another neutron is emitted.
