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measure

Primary Information
Secondary Information

Definition

In science, measurement is the process of assigning numbers to things in a consistent way. This allows us to compare and quantify objects and phenomena.

There are many different types of measurements, each with its own unit of measurement. For example, length is measured in meters, weight is measured in kilograms, volume is measured in litres, and temperature is measured in degrees Celsius.

The accuracy and precision of measurement are important considerations. Accuracy refers to how close the measurement is to the true value of the quantity being measured. Precision refers to how reproducible the measurement is.

There are many different tools and instruments that can be used to make measurements. Some common tools include rulers, scales, thermometers, and stopwatches.

Measurement is an essential part of science. It allows us to make observations, collect data, and test hypotheses. By measuring things, we can learn more about the world around us.

How can the word be used?

I measured the length of the room with a tape measure.

measure

Different forms of the word

Noun:

  • measure (the most common form).
  • measurement.
  • measuring.
  • mensuration.

Verb:

  • measure.
  • measure out.
  • measure up.
  • measure off.
  • measure into.

Adjective:

  • measurable.
  • measured.
  • measureless.

Etymology

The word "measure" comes from the Latin word "mensura," which means "a measuring, a measurement; thing to measure by." The Latin word "mensura" is derived from the Proto-Indo-European root *me-, which means "to measure.".

Question

What things can you measure?

AQA Science Exam Question and Answer

Question:

Explain the concept of measurement in scientific investigations and its importance in obtaining accurate and reliable data. Provide examples of measurements in different scientific disciplines and discuss the role of units in standardising measurements.

Answer:

  • Measurement is a fundamental aspect of scientific investigations that involves quantifying various properties or attributes of objects and phenomena. It allows scientists to collect data, make comparisons, and draw conclusions based on empirical evidence. Accurate and reliable measurements are crucial for establishing credible scientific theories and understanding the natural world.
  • In physics, for instance, measurements of distance, time, and mass are essential for describing the motion of objects. In chemistry, measurements of temperature, volume, and concentration guide reactions and help formulate chemical equations. Biology relies on measurements of variables like heart rate, cell size, and DNA sequences to advance our understanding of living organisms.
  • Units play a pivotal role in standardising measurements. They provide a common language for scientists worldwide to communicate their findings accurately. For example, when measuring length, the standard unit is the meter, which ensures consistency in reporting measurements.
  • Scientific instruments, like rulers, thermometers, and balances, enable precise measurements. However, it's important to acknowledge potential errors in measurement due to instrument limitations, human errors, or external factors.

In conclusion, measurement is the cornerstone of scientific investigation, enabling researchers to quantify and analyse the physical world. The use of standardised units enhances the accuracy and comparability of measurements, facilitating collaboration and knowledge sharing across scientific disciplines.