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Quizzes > High School Quizzes > Mathematics

Temperature Conversion Practice Quiz

Sharpen conversion skills for exam-ready temperature tests

Difficulty: Moderate
Grade: Grade 7
Study OutcomesCheat Sheet
Paper art promoting Degrees Demystified, a geometry quiz for high school students.

What is the measure of a right angle in degrees?
60°
30°
180°
90°
A right angle is defined as 90 degrees, which is universally accepted in geometry. It forms the corner of a square and is a fundamental concept in understanding angular measurements.
A full circle measures how many degrees?
90°
360°
180°
270°
A full revolution around a point is equal to 360 degrees. This is the standard measure for complete circular motion in geometry.
Which formula correctly converts Celsius to Fahrenheit?
Fahrenheit = (Celsius + 32) Ã - 9/5
Fahrenheit = (Celsius - 32) Ã - 5/9
Fahrenheit = (Celsius à - 9/5) + 32
Fahrenheit = (Celsius à - 5/9) + 32
The correct conversion formula from Celsius to Fahrenheit multiplies the Celsius value by 9/5 and then adds 32. This accounts for the difference in scaling between the two temperature units.
What is the measure of a straight angle?
45°
90°
180°
360°
A straight angle is formed when two rays line up to form a straight line, giving an angle of 180 degrees. Understanding this is essential in geometry when distinguishing between different angle types.
What is 0°C when converted to Fahrenheit?
100°F
0°F
50°F
32°F
When converting 0°C to Fahrenheit using the formula, (0 à - 9/5) + 32 equals 32°F. This is a basic conversion fact in temperature measurements.
How many minutes are in one degree of angle measurement?
120 minutes
60 minutes
30 minutes
90 minutes
Each degree is subdivided into 60 minutes in angular measurement. This subdivision allows for more precise angle measurements.
What is the decimal degree equivalent of 45° 30'?
45.3°
44.5°
45.5°
46.0°
Since 30 minutes is equal to half a degree, 45° 30' converts to 45.5° in decimal form. This conversion is helpful when working with digital formats that require decimal degrees.
How do you convert an angle from degrees to radians?
Multiply by π/180
Multiply by 180/Ï€
Add π/180
Divide by π
To convert degrees to radians, multiply the degree measure by π/180. This conversion is fundamental in trigonometry and many applications in geometry.
What is the radian measure of 180°?
180 radians
Ï€ radians
2Ï€ radians
Ï€/2 radians
A straight angle of 180° is equivalent to π radians. This conversion is a key component in understanding the relationship between degrees and radians.
If a temperature increases by 20°C, how many degrees Fahrenheit does it increase by?
32°F
20°F
40°F
36°F
A change of 20°C is converted to Fahrenheit by multiplying 20 by 9/5, resulting in a change of 36°F. This conversion factor applies to temperature differences.
What is the decimal degree value of 90° 15'?
90.15°
90.25°
90.50°
91.00°
Fifteen minutes is equivalent to 0.25°; therefore, 90° 15' equals 90.25°. This conversion is useful for expressing angles in decimal form for calculations.
In a triangle, if two angles measure 50° and 60°, what is the measure of the third angle?
70°
90°
80°
60°
Since the angles in a triangle sum to 180°, subtracting 50° and 60° from 180° gives 70° for the third angle. This is a fundamental property of triangles.
How many seconds are in one minute of angle measurement?
60 seconds
30 seconds
100 seconds
90 seconds
One minute of angular measurement is divided into 60 seconds. This breakdown allows for more precise measurements when needed.
Convert 3.5°C to Fahrenheit. What is the result approximately?
36°F
42°F
38°F
40°F
Using the formula F = (C à - 9/5) + 32, 3.5°C converts to approximately 38°F after performing the multiplication and addition. Rounding is applied for simplicity.
Which angle is classified as an obtuse angle?
60°
180°
90°
120°
An obtuse angle is one that is greater than 90° but less than 180°. Therefore, 120° is correctly classified as an obtuse angle.
Convert 2° 45' 30'' to decimal degrees.
2.76°
2.75°
3.05°
2.80°
To convert an angle from degrees, minutes, and seconds to decimal degrees, divide the minutes by 60 and the seconds by 3600, then add these to the degree value. The result, 2 + 45/60 + 30/3600, approximates to 2.76°.
Convert an angle of 120° 30' to radians.
2.50 radians
1.87 radians
1.75 radians
2.10 radians
First, convert 120° 30' to 120.5° in decimal form. Then, multiply by π/180 to convert to radians, which yields approximately 2.10 radians. This method is standard for converting from degrees to radians.
A temperature reading is 25°C. What is this temperature in Kelvin?
300 K
295 K
298.15 K
273.15 K
To convert Celsius to Kelvin, add 273.15 to the Celsius temperature. Therefore, 25°C becomes 25 + 273.15, which is 298.15 K.
A regular polygon has each interior angle measuring 144°. How many sides does it have?
10
12
9
8
The formula for the interior angle of a regular polygon is ((n-2)à - 180)/n. Setting this equal to 144° and solving for n gives 10 sides, identifying the polygon as a decagon.
A thermometer reads 77°F. What is the temperature in Celsius?
25°C
30°C
27°C
20°C
Using the conversion formula (F - 32) à - 5/9, subtract 32 from 77 and then multiply by 5/9. This calculation results in 25°C, which is the correct conversion from 77°F.
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Study Outcomes

  1. Understand the concept of angular measurements and their significance in geometry.
  2. Apply techniques to measure and convert angles accurately.
  3. Solve problems involving the relationship between different angular units.
  4. Analyze geometric figures to determine angle properties and measurements.
  5. Evaluate and build confidence through practice exam-style questions on angular measurements.

Temperature Conversion Practice Cheat Sheet

  1. Understand the Celsius and Fahrenheit scales - Dive into the two main temperature scales: the Celsius (°C) scale, used almost everywhere, and the Fahrenheit (°F) scale, favored in the United States. Remember that water freezes at 0°C (32°F) and boils at 100°C (212°F) to anchor your conversions. Explore at MathsIsFun
  2. Learn the Celsius to Fahrenheit conversion formula - Converting °C to °F is as easy as multiplying by 9/5 and then adding 32. Practicing with fun examples (like turning 25°C into cozy 77°F) cements the concept in your brain. Check the formula on GeeksforGeeks
  3. Master the Fahrenheit to Celsius conversion formula - Flip the script by subtracting 32 from °F and multiplying by 5/9 to land on °C. It's the same process in reverse, handy when you want to know why 98.6°F is the magic number 37°C. Learn more at BYJU'S
  4. Familiarize yourself with the Kelvin scale - Kelvin (K) starts at absolute zero, where molecular motion stops, making it the SI unit for scientific measurements. Convert from Celsius by simply adding 273.15 to any Celsius reading - ice-cold 0°C becomes 273.15K. Discover Kelvin conversions on GeeksforGeeks
  5. Practice converting between Fahrenheit and Kelvin - Want a challenge? Convert °F to K by subtracting 32, multiplying by 5/9, and then adding 273.15 for a complete transformation. For example, a comfortable 68°F translates to 293.15K in the Kelvin realm. Practice on Testbook
  6. Remember key temperature points - Anchor your memory with must-know landmarks: water freezes at 0°C (32°F) and boils at 100°C (212°F), while the human body sits at about 37°C (98.6°F). These benchmarks are your north stars when converting any temperature. Review at MathsIsFun
  7. Use mnemonic devices to recall formulas - Turn formulas into catchy phrases: "C times 9, divide by 5, plus 32" for °C→°F, and "F minus 32, times 5, divide by 9" for °F→°C. Rhymes, songs, or silly sentences make these calculations stick like superglue! Get mnemonics from GeeksforGeeks
  8. Practice with real-world examples - Convert daily weather data to train your brain: turn the evening forecast into °C or °F, depending on where you are. The more you convert real temperatures, the more second nature it becomes. Try interactive examples on MathsIsFun
  9. Understand the significance of absolute zero - At absolute zero (0K), molecular motion halts, marking the lowest point on the temperature scale. This corresponds to −273.15°C or −459.67°F, a mind-blowing concept at the edge of physics. Read about absolute zero on GeeksforGeeks
  10. Be aware of common temperature ranges - Familiarize yourself with everyday temperatures: room temperature is about 20°C (68°F), a scorching summer day can hit 30°C (86°F), and a chilly winter morning might drop to 0°C (32°F). These real-life points help you visualize your conversions. Learn more on MathsIsFun
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