A measuring tool is anything used to take a count of quantitative data, such as weight, length, time or temperature. Rulers and scales are two common types of measuring tools. Measuring tools can be very precise, but low quality ones can lead to faulty measurements.Know More
Measuring tools are essential for many different types of jobs or exercises. For measuring length, rulers are the accepted choice. There are various types of rulers, including yardsticks and tape measures, that can measure different distances. Rulers are useful because they can have multiple measurement systems, such as metric and imperial units, are simple to use and have marks denoting subdivisions.
Scales are used for weighing things and can be very precise for chemistry, cooking or other scientific endeavours. There are hanging, pressure and balance scales which have different pros and cons and are useful for different needs, though pressure scales are the most common. Scales do need to be calibrated sometimes, and digital ones can wear out and provide a bad reading.
Temperature is measured with thermometers, and both digital and mechanical are used. Mercury used to be favored to measure temperature, but it has fallen out of favor due to its negative effects to exposed humans. Watches and clocks are used to measure time and can also be mechanical or digital.Learn more about Measurements
The length of time that a helium balloon will float depends on many factors that include inflation level, temperature, size and material of the balloon and if it is sealed with a product like Hi-Float. For example, a latex balloon that is well-inflated and is 11 inches will float between 12 to 24 hours. However, if this same balloon is sealed with Hi-Float can last between 1 and 4 weeks.Full Answer >
Tampons can expire, but the length of time before a tampon expires depends on a number of factors, such as moisture, contamination and temperature. Perfumed tampons expire more quickly than nonperfumed tampons.Full Answer >
The length of time between preparation and use of vacuum-packed food depends upon pH, nutritional composition, temperature, oxygen, age and condition of the food and moisture content. However, vacuum-packed foods kept at 37.4 degrees Fahrenheit last three to five times longer than refrigeration alone.Full Answer >
The average weight for a given age differs with time, as obesity rates have been steadily increasing with time, as reported by ABC News; however, the World Health Organization, Gerontology Research Center and the United States Centers for Disease Control and Prevention has collected an abundance of data to determine the current average weight for each given age and gender while still taking into account societal and cultural influences. The average weight for a given age can be measured using three different techniques: head circumferences, body mass index, or BMI, and waist circumference. Most health institutes are concerned with whether the average weight for a given age is healthy given the overall spike in obesity rates.Full Answer >