Understanding Temperature: Positive and Negative Numbers

This lesson teaches how to use positive and negative numbers by exploring temperature scenarios. It covers the use of a vertical number line, common mistakes in expressing negative temperatures, and the differences between Celsius and Fahrenheit thermometers. The lesson includes practical examples of temperature changes and concludes with a summary of key points.

What is a common mistake when writing negative temperatures?

• Writing negative 20 degrees as 0 degrees

• Writing negative 20 degrees as 20 degrees above zero

• Writing negative 20 degrees as 20 degrees

• Writing negative 20 degrees as 20 degrees below zero

Which temperature scale is primarily used in the United States?

• Celsius

• Kelvin

• Fahrenheit

• Rankine

What is the boiling point of water in Fahrenheit?

• 100 degrees

• 212 degrees

• 32 degrees

• 0 degrees

If the temperature starts at negative 5 degrees and drops by 10 degrees, what is the new temperature?

• Negative 15 degrees

• Negative 10 degrees

• 0 degrees

• 5 degrees

What is the average daily temperature in winter in Fairbanks, Alaska?

• Negative 20 degrees Fahrenheit

• 0 degrees Fahrenheit

• Negative 6 degrees Fahrenheit

• 32 degrees Fahrenheit