Thermodynamics and Energy Calculations

Miss Moore provides a weekly tutorial for AP Environmental Science students during the second week of quarantine. The video covers assignments due, including a renewable resource comparison chart and energy calculation practice. It explains the first and second laws of thermodynamics, focusing on energy conservation and efficiency. The tutorial includes guided practice on energy conversion calculations and understanding kilowatt-hour conversions. Miss Moore offers guidance on completing assignments and encourages students to stay safe and active.

What is the main focus of the weekly tutorial video?

• FRQ practice

• Thermodynamics laws

• Energy calculation practice

• Renewable resources comparison

According to the first law of thermodynamics, energy can be:

• Created and destroyed

• Transformed from one form to another

• Only created

• Only destroyed

The second law of thermodynamics is primarily concerned with:

• Entropy and energy loss

• Energy conservation

• Energy creation

• Energy transformation

When converting 75 watts to kilojoules, what is the first step?

• Convert watts to joules per second

• Convert joules to kilojoules

• Convert kilojoules to watts

• Convert minutes to seconds

What is the conversion factor for kilowatt-hours to kilojoules?

• 1 kilowatt-hour = 3600 kilojoules

• 1 kilowatt-hour = 100 kilojoules

• 1 kilowatt-hour = 5000 kilojoules

• 1 kilowatt-hour = 1000 kilojoules

How many seconds are there in one hour?

• 3600 seconds

• 1800 seconds

• 2400 seconds

• 7200 seconds

To find the energy used in joules per day, you must first convert:

• Kilojoules to watts

• Kilojoules to kilowatt-hours

• Joules to kilojoules

• Kilowatt-hours to kilojoules

What is the cost calculation based on in the practical problem?

• Energy used in kilojoules

• Energy used in watts

• Energy used in kilowatt-hours

• Energy used in joules

In the practical problem, what is the significance of the 20% efficiency?

• It is used to calculate the cost of energy

• It is used to determine the energy converted to light

• It is used to calculate the total energy used

• It represents the energy lost to surroundings

What should you do if you get stuck on a problem?

• Use a calculator

• Guess the answer

• Message the teacher for help

• Skip the problem