Question

answer the following questions in the spaces provided below.

1. what are the temperatures shown by these thermometers (don’t forget to add units)?

(a) _-7____ (c) _______ (e) _________
(b) _51.60____ (d) _______ (f) _________

Explanation:

Step1: Analyze Thermometer (c)

The thermometer (c) has major marks at 0, 10, 20. The minor divisions between 10 and 20: from 10 to 20, there are 10 small lines, so each small line is \( \frac{10}{10} = 1 \) unit? Wait, no, looking at the red column: the bottom is at 0? Wait, no, the red column starts at 0? Wait, the major marks: 0, 10, 20. Wait, the red column is at 20 +? Wait, no, the major mark 20 is at a certain level. Wait, the red column's top is at 20 + 3? Wait, no, let's check the intervals. Wait, between 0 and 10: how many lines? Wait, maybe each major mark (like 0,10,20) has 10 minor lines, so each minor line is 1 unit. Wait, the red column in (c) is at 20 + 3? Wait, no, the major mark 20 is a horizontal line, then above that, the red column is at 20 + 3? Wait, no, looking at the thermometer (c): the red column is at 23? Wait, no, the major mark 20, then each small line is 1, so from 20, the red column is at 20 + 3? Wait, no, the red column's top is at 23? Wait, no, let's re - examine. The thermometer (c) has major marks: 0, 10, 20. The red column is above 20, with 3 small lines above 20? Wait, no, the red column starts at 0 and goes up to 23? Wait, no, the major mark 20 is a horizontal line, and the red column is at 23? Wait, maybe I made a mistake. Wait, the thermometer (c) has the red column reaching up to 23? Wait, no, let's check the other thermometers. For example, thermometer (a): major marks 0,5,10,-5,-10,-15. The red column is at -7 (as given). Thermometer (b): major marks 49,50,51,52,53,54. The red column is at 51.6 (as given). So for (c): major marks 0,10,20. The red column is at 23? Wait, no, the major mark 20 is a horizontal line, then the red column is at 20 + 3? Wait, no, the red column's top is at 23? Wait, maybe the unit is degrees (let's assume °C or °F, but the problem says "temperatures", so units like °C or °F, but the answer just needs the number with units. Wait, the given (a) is -7 (units, maybe °C), (b) is 51.60. So for (c): the red column is at 23? Wait, no, let's count the lines. From 0 to 10: 10 lines, so each line is 1. From 10 to 20: 10 lines, each line 1. So the red column in (c) is at 23? Wait, no, the major mark 20 is a horizontal line, then the red column is at 23? Wait, maybe it's 23 (units, e.g., °C).

Step2: Analyze Thermometer (d)

Thermometer (d) has major marks: -10, 0,10,20,30,40. The red column is at 14? Wait, major mark 10, then 4 small lines above 10. Since between 0 and 10, there are 10 small lines, so each small line is 1 unit. So from 10, 4 small lines up: 10 + 4 = 14.

Step3: Analyze Thermometer (e)

Thermometer (e) has major marks: -30, -20, -10. The red column is at -13? Wait, major mark -10, then 3 small lines below -10 (since the red column is below -10). Wait, major mark -10, then each small line is 1 unit (between -20 and -10, there are 10 small lines, so each is 1 unit). So -10 - 3 = -13.

Step4: Analyze Thermometer (f)

Thermometer (f) has major marks: 60,65,70,75,80,85. The red column is at 66? Wait, major mark 65, then 1 small line above 65. Between 60 and 65, there are 5 small lines, so each small line is \( \frac{5}{5}=1 \) unit. So 65 + 1 = 66.

Wait, let's re - check:

- Thermometer (c): Major marks 0,10,20. The red column is at 23 (since from 20, 3 small lines up, each small line is 1, so 20+3 = 23).
- Thermometer (d): Major marks -10,0,10,20,30,40. The red column is at 14 (10 + 4, since 4 small lines above 10).
- Thermometer (e): Major marks -30,-20,-10. The red column is at -13 (-10 - 3, 3 small lines below -10).
- Thermometer (f): Major marks 60,65,70,75,80,85. The red column is at 66 (65 + 1, 1 small line above 65).

Wait, maybe I made a mistake in thermometer (c). Let's look again: the thermometer (c) has the red column reaching up to 23? Wait, no, the major mark 20 is a horizontal line, and the red column is at 23? Or maybe the major mark 20 is at the bottom of the red column? No, the red column is a solid red, so it starts from the bottom (0) and goes up. Wait, the major mark 0, then 10, then 20. So the red column's height is 23? So temperature is 23 (units, e.g., °C).

Thermometer (d): major mark 10, then 4 small lines up: 14 (units).

Thermometer (e): major mark -10, then 3 small lines down: -13 (units).

Thermometer (f): major mark 65, then 1 small line up: 66 (units).

Answer:

(c) \( 23^\circ \) (assuming appropriate unit like °C or °F)
(d) \( 14^\circ \)
(e) \( - 13^\circ \)
(f) \( 66^\circ \)

Wait, but let's correct the analysis for thermometer (c) again. Wait, the thermometer (c) has the red column at 23? Wait, no, looking at the thermometer (c) again: the major marks are 0, 10, 20. The red column is at 23? Wait, maybe the unit is °C. For thermometer (d): between 0 and 10, there are 10 small lines, so each small line is 1°C. The red column is at 14°C (10 + 4). For thermometer (e): between -20 and -10, 10 small lines, each is 1°C. The red column is at -13°C (-10 - 3). For thermometer (f): between 60 and 65, 5 small lines, so each is 1°C (since 65 - 60 = 5, 5 lines). The red column is at 66°C (65+1). For thermometer (c): between 0 and 10, 10 small lines, each 1°C. The red column is at 23°C (20 + 3).