Grade 7 Science Quiz

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Questions and Answers

Which of the following is the correct definition of temperature?

  • The amount of energy in an object
  • The amount of matter in an object
  • The level of coldness in an object
  • The level of heat in an object (correct)

What is the main purpose of a thermometer?

  • To measure the amount of energy in an object
  • To measure the level of coldness in an object
  • To measure the level of heat in an object (correct)
  • To measure the amount of matter in an object

Why is the sense of touch not a reliable way to measure temperature?

  • Because it can give different sensations for objects with the same temperature (correct)
  • Because it can only measure the amount of energy in an object
  • Because it can only measure the level of coldness in an object
  • Because it can only measure the amount of matter in an object

What is the correct term for a thermometer that uses liquid as its measuring substance?

<p>Liquid thermometer (B)</p> Signup and view all the answers

Why is it important to measure temperature quantitatively?

<p>To make accurate temperature measurements (B)</p> Signup and view all the answers

Flashcards

Definition of Temperature

The level of heat in an object.

Thermometer's Purpose

To measure the level of heat.

Touch as Temperature Measurement?

Sense of touch is unreliable for precise temperature measurement.

Liquid Thermometer Type

A thermometer that uses liquid as its measuring substance.

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Importance of Quantitative Temperature Measurement

Essential for accurate readings.

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Study Notes

Temperature and Thermometry

  • Temperature is a measure of the average kinetic energy of the particles in a substance.
  • The main purpose of a thermometer is to measure temperature quantitatively.

Limitations of Sense of Touch

  • The sense of touch is not a reliable way to measure temperature because it can be influenced by various factors, such as the individual's sensitivity, the object's thermal conductivity, and the duration of contact.

Types of Thermometers

  • A thermometer that uses liquid as its measuring substance is called a liquid-in-glass thermometer.

Importance of Quantitative Measurement

  • It is important to measure temperature quantitatively because it allows for precise and accurate readings, enabling scientists to make informed decisions and comparisons.

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