Podcast
Questions and Answers
How do you measure the length of a curved line?
How do you measure the length of a curved line?
Use a thread to measure the length and lay it along a ruler.
What is the first step in measuring the volume of a regular shape?
What is the first step in measuring the volume of a regular shape?
What does the increase in the volume of water indicate when using the displacement method?
What does the increase in the volume of water indicate when using the displacement method?
It indicates the volume of the object.
The SI unit of length is the centimeter.
The SI unit of length is the centimeter.
Signup and view all the answers
Which of the following is equivalent to 1 litre?
Which of the following is equivalent to 1 litre?
Signup and view all the answers
How should you read the level of liquid in a measuring cylinder?
How should you read the level of liquid in a measuring cylinder?
Signup and view all the answers
One millilitre (1 ml) is the same as _____ cm³.
One millilitre (1 ml) is the same as _____ cm³.
Signup and view all the answers
A 1 litre cylinder is suitable for measuring small volumes like 5 cm³.
A 1 litre cylinder is suitable for measuring small volumes like 5 cm³.
Signup and view all the answers
Study Notes
Measuring Length
- For curved lines, use a thread to measure length; mark the ends and lay it against a ruler.
Measuring Volumes
- Measuring volumes can be done using two methods based on shape regularity.
Regular Shapes
- For cubes or cuboids, measure length, width, and height; then multiply these measurements for volume.
Irregular Shapes
- Volume can be measured by displacement:
- Use a measuring cylinder that is three to four times larger than the object.
- Partially fill the cylinder with water, noting the initial volume.
- Immerse the object and measure the rise in water level; this increase equals the object’s volume.
Units
- The International System of Units (SI) defines the standard unit for length as the metre (m).
- Volume conversion: 1 litre (1 l) equals 1 cubic decimetre (1 dm³), and 1 millilitre (1 ml) equals 1 cubic centimetre (1 cm³).
Key Terms
- Volume: The amount of space an object occupies.
- Meniscus: The curved surface of a liquid in a container.
- Displace: Moving water upwards when an object is submerged.
- Immerse: Covering an object completely in a fluid, typically water.
Measuring Liquid Volumes
- Read liquid levels by viewing the scale horizontally at the bottom of the meniscus.
- A 1-litre cylinder is inappropriate for small volumes like 5 cm³; use a 10 cm³ cylinder for more accuracy.
Visual Aids
- Refer to Figure 1.7 to see volume measurement by displacement and Figure 1.8 for a student measuring a block of steel submerged in water.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz explores the methods for measuring length and volume, focusing on both curved and regular shapes. It provides techniques for using a thread for curved lines and calculating volumes through displacement for irregular shapes. Brush up on your measurements with this engaging quiz!
