Understanding Elevation and Temperature

Mrs. Ojeda reviews practice problems from Unit 7, Lesson 1, focusing on rational numbers. She explains temperature and elevation comparisons using vertical number lines, calculates temperature drops, and discusses changes in elevation for divers and whales. The session concludes with plotting elevations and instructions for students to upload their work.

What is the main focus of the lesson in the pink book?

• Algebraic expressions

• Probability

• Rational numbers

• Geometric shapes

On a vertical number line, which temperature is warmer: -11 degrees or -15 degrees?

• Both are the same

• -15 degrees

• -11 degrees

• Cannot be determined

If an elevation is -10 feet, is it closer or farther from the ocean surface compared to -8 feet?

• Closer

• Cannot be determined

• Farther

• Same distance

What is the temperature at midnight if it was 8 degrees at nightfall and dropped by 10 degrees?

• -2 degrees

• 2 degrees

• 10 degrees

• -10 degrees

A diver is 25 feet below sea level and swims up 15 feet. What is his new elevation?

• -15 feet

• 10 feet

• 15 feet

• -10 feet

What is the elevation of a whale at the ocean surface?

• -450 feet

• 300 feet

• 0 feet

• -300 feet

If a whale swims down 300 feet from the surface, what is its elevation?

• -450 feet

• -300 feet

• 300 feet

• 0 feet

After swimming down an additional 150 feet, what is the whale's new elevation?

• -300 feet

• -600 feet

• -150 feet

• -450 feet

How should the elevations of 0, -300, and -450 feet be plotted on a vertical number line?

• All at 0

• Some above and some below 0

• All below 0

• All above 0

What is the significance of sea level in determining elevation?

• It is always positive

• It is not used in elevation

• It is the reference point of 0

• It is always negative