Hi, young learners! Welcome back to Primary 3 Basic Science and Technology. In our previous lesson, we learned about Measurement of Mass. Today, we’re going to learn about Instruments for Measuring Mass, Length, Breadth, and Height.
Objectives
By the end of this lesson, you should be able to:
- List the instruments for measuring mass, length, breadth, and height.
- Identify and mention various instruments for measuring mass, length, breadth, and height.
- Measure the mass, length, breadth, and height of objects around them.
Instruments for Measuring Mass, Length, Breadth, and Height
Mass, length, breadth, and height are important physical attributes that can be measured using specific instruments.
What are Instruments for Measuring Mass?
Some of the instruments used for measuring mass include:
- Mass Balance: A mass balance is a tool used to determine the mass of an object by comparing it to known standard masses. It works by balancing the object on one side of a beam with known weights on the other side.
- Weighing Scale: A weighing scale is a device used to measure the weight of an object. It works by using a spring or a lever system to measure the force exerted by the object’s weight.
- Spring balance: A spring balance is a device used to measure the force of gravity acting on an object, which is its weight. It works by using a spring that stretches or compresses in proportion to the force applied to it.
What are Instruments for Measuring Length?
There are several instruments used for measuring length, such as:
- Ruler: A ruler is a straight measuring tool with markings along its edge that are used to measure length. It is typically made of wood, plastic, or metal.
- Measuring Tape: A measuring tape is a flexible measuring tool that is used to measure length, breadth, and height. It is typically made of fabric or metal and has markings along its length.
What are Instruments for Measuring Breadth?
The main instruments used for measuring breadth include:
- Vernier Caliper: A vernier caliper is a precision measuring tool used to measure the inside and outside dimensions of objects. It has a sliding jaw that can be adjusted to fit the object being measured.
- Measuring Tape: A measuring tape can also be used to measure breadth, as it is flexible and can be used to measure the width of objects.
What are Instruments for Measuring Height?
There are a few instruments used for measuring height, such as:
- Measuring Tape: A measuring tape is a versatile tool that can be used to measure height, as it is flexible and can be extended to reach high places.
- Spirit Level: A spirit level is a tool used to determine if a surface is horizontal or vertical. It can be used to measure height by placing it on a surface and adjusting it until the bubble is centered.
Evaluation Questions
Now that you’ve learned about Instruments for Measuring Mass, Length, Breadth, and Height, let’s see if you can answer these questions:
- What is the instrument used for measuring mass?
- What is the instrument used for measuring length?
- How would you measure the breadth of an object?
- Explain the importance of using the correct measuring instrument.
- Can you name two instruments used for measuring height?
Conclusion
We have learned about the instruments used for measuring mass, length, breadth, and height. Remember, using the correct instrument is crucial for accurate measurements. Keep practicing and exploring different measuring tools to enhance your understanding of these concepts. Don’t forget to check the comments section if you have any questions, and use the navigation to move to the next lesson. See you in the next lesson!
