Experiment No. ___ SOME COMMON UNITS USED IN SCIENCE INTRODUCTION: A unit of measurement is a definite magnitude of a physical quantity, defined and adopted by convention or by law that is used as a standard for measurement of the same physical quantity. Any other value of the physical quantity can be expressed as a simple multiple of the unit of measurement. For example, length is a physical quantity. The meter is a unit of length that represents a definite predetermined length. When we say 10 meters (or 10 m), we actually mean 10 times the definite predetermined length called "meter". The definition, agreement, and practical use of units of measurement have played a crucial role in human endeavor from early ages up to this day. Different systems of units used to be very common. Now there is a global standard, the International System of Units (SI), the modern form of the metric system. …show more content…
Units of Length. Stand with your back against the wall and ask your fellow student to place his finger at a point on the wall which is on a level with the top of your head. Using this point, measure and record your height in mm, cm, and m. B. Units of Volume. Measure the capacity of one pint ice cream container by pouring measured quantities of water from your graduated cylinder into the container, repeating this process until the container is completely filled. Note and record this volume. C. Units of Weight. Use a 10 peso coin and weight it to the nearest 0.1 gram and record this weight both in grams and in milligrams. Similarly, weigh and record the weight of your smaller beaker. D. Units of Temperature. Obtain a Celsius thermometer. Half-fill a beaker with tap water and place it on wire gauze supported on a ring stand. Now place the bulb thermometer in the water and read the temperature to the nearest half degree. Next warm the water until the water is almost boiling. Again take and record its temperature. E. Density and Specific
Start with the hot water and first measure the temperature. Record it. 8. Then pour 40 ml into the beaker. You can measure how much water was used by looking at the meniscus.
The metric system is the most common system of measurement and nearly every country uses it but one, America. People who needed an easier way to measure things invented this system of measurement long ago. While the metric system was spreading to every country, Britain was using the customary units of measurement to measure things. As the British started colonizing America, the customary system moved with them. Finally, when Britain decided to convert to metric, the newly democratic America established its system of measurement as customary while almost every other country measured in metric. America should change to the metric system because it will promote more jobs in America, it would increase relations with other countries, and it is easier to understand and apply.
We must first begin the today’s lab by connecting the thermometer that digitally detects surrounding temperature to the Lab Pro Interface located on the computer via...
4. Pour about 300mL of tap water into the beaker. Set up a hot-water bath using a hot plate, retort stand, and thermometer clamp. Alternatively, use a Bunsen burner, retort stand, ring clamp, thermometer clamp, and wire gauze.
A thermometer * A clamp * A Bunsen burner * A stop clock Method = =
A hot plate is acquired and plugged in and if left to warm up. Fill two beakers with 0.075kg of water and record the temperature using a thermometer and record it. Place one of the beakers onto the hot plate and drop one of the metal objects in. Wait for the water to boil and wait two minutes. Take the object out of the water and drop it into the other beaker. Take the temperature of the beaker and record the rise in temperature.
In a Styrofoam cup, record the temperature of the 200 ml of cold water. This is 200 g of water, as the density of water is 1 g/ml.
Measure and record the temperature of the water in the Styrofoam cup. Leave cardboard cover on until the heated metal is ready to be transferred into the calorimeter.
Temperature is the numerical representation of hot and cold usually measured by a thermometer. Temperature is also the measurement of how fast molecules and atoms of substances are moving. Temperature is measured in degrees on three different scales, Fahrenheit, Celsius or Kelvin. The thermometers we know today was not developed or invented by one specific person but was a collaborative effort from numerous different devices produced from scientists, astronomers, physiologist, doctors and even a grand Duke of Tuscany. The different trials and efforts from previous devices allowed the thermometer to be perfected and can now be used to read the temperature of the
Plan 1. Collect 4 different sized beakers 2. Boil some water in the kettle 3. Pour 50ml into each beaker 4. After 1 minute check temperature 5.
In a 250ml beaker place 100mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved. After 1 minute measure the temperature and record it, do this for a further 2 minutes (3 minutes in total). Repeat this process for a total of 10 teaspoons.
If I am to use a square of side length 10cm, then I can calculate the
People are familiar with measuring things in the macroscopic world around them. Someone pulls out a tape measure and determines the length of a table. A state trooper aims his radar gun at a car and knows what direction the car is traveling, as well as how fast. They get the information they want and don't worry whether the measurement itself has changed what they were measuring. After all, what would be the sense in determining that a table is 80 cm long if the very act of measuring it changed its length!
Ever since its conception as a concept, there have been varying definitions or theorists about it. There are differentiating perspectives as some define it as a single idea while others relate it to a set of values, meanings, norms and the like.