Understanding Elevation and Absolute Value

The video tutorial covers the concept of absolute value, focusing on its application in real-world scenarios like elevation. It begins with an introduction to absolute value and its significance, followed by a warm-up exercise on understanding opposites and negative values on a number line. The main exercise involves comparing the elevations of a submarine and various individuals, emphasizing the importance of both elevation and distance from sea level. The tutorial concludes by highlighting the impossibility of certain scenarios based on these concepts.

What is the term used to describe the distance of a number from zero?

• Relative value

• Absolute value

• Negative value

• Comparative value

Which of the following is true about the absolute value of a number?

• It is always positive.

• It is the distance from zero.

• It is the number itself.

• It is always negative.

If a variable 'a' is 3, what is the opposite of 'a' on a number line?

• 3

• -3

• 6

• 0

What does a negative sign in front of a variable indicate?

• The variable is negative.

• The variable is positive.

• The opposite value of the variable.

• The variable is zero.

A submarine is at an elevation of -100 feet. What does this mean?

• It is 100 feet above sea level.

• It is 100 feet below sea level.

• It is at sea level.

• It is 200 feet below sea level.

If Claire's elevation is greater than the submarine's, which of the following could be her elevation?

• -150 feet

• -50 feet

• 0 feet

• 150 feet

Andre's elevation is less than the submarine's. Which of the following could be his elevation?

• 100 feet

• 0 feet

• -200 feet

• -50 feet

Han's elevation is greater than the submarine's but closer to sea level. What could be his elevation?

• 200 feet

• 50 feet

• 25 feet

• 150 feet

Lin's elevation is the same distance from sea level as the submarine's. What could be her elevation?

• 100 feet

• -100 feet

• 0 feet

• -200 feet

Why is it impossible for an elevation to be less than the submarine's but closer to sea level?

• Because negative numbers are always larger.

• Because the further down you go, the closer you are to sea level.

• Because sea level is always at zero.

• Because the further down you go, the further you are from sea level.