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Unit Test: Measurement of Length and Motion | Science for Class 6 PDF Download

Attempt all questions. Time: 1 hour, M.M. 30

Question numbers 1 to 7 carry 1 mark each.
Question numbers 8 to 12 carry 2 mark each.
Question numbers 13 to 15 carry 3 marks each.
Question number 16 carries 4 marks.

Q1: Which of the following is the standard unit of length in the International System of Units (SI)? (1 Mark)
A. Foot
B. Inch
C. Meter
D. Yard

Q2: What instrument is used to measure the length of curved objects? (1 Mark)

Q3: The SI unit of length is __________. (1 Mark)

Q4: What is the disadvantage of using body parts like handspan or foot for measurement? (1 Mark)
A. Measurements vary from person to person
B. It is quick
C. It is accurate for everyone
D. It is used only for large measurements

Q5: What is the motion of an object called when it moves along a circular path? (1 Mark)

Q6: When is an object said to be in motion? (1 Mark)

Q7: The smallest unit of length that can be measured using a 15-cm scale is __________. (1 Mark)

Q8: Give two examples of circular motion. (2 Mark)

Q9: How should a scale be used to accurately measure length? (2 Mark)

Q10: Why is using standard units of measurement important? (2 Mark)

Q11: Compare linear motion and oscillatory motion, providing examples for each. (2 Marks)

Q12: How would you measure the length of a curved line? Explain the method used. (2 Marks)

Q13: How were measurements using body parts considered inconsistent? (3 Marks)

Q14: How does the reference point help in determining whether an object is in motion or at rest? Provide an example. (3 Marks)

Q15: Define motion. What are the different types of motion? (3 Marks)

Q16: How do different measuring instruments (e.g., metre scale, measuring tape, and thread) help in measuring various objects accurately? Explain with examples of when each instrument would be used. (4 Marks)

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FAQs on Unit Test: Measurement of Length and Motion - Science for Class 6

1. What are the common units of measurement for length used in everyday life?
Ans. Common units of measurement for length include millimeters (mm), centimeters (cm), meters (m), and kilometers (km). In everyday life, we often use centimeters for shorter lengths, like measuring height, and meters for longer distances, like room dimensions. Kilometers are typically used for measuring distances between locations.
2. How do you convert between different units of length?
Ans. To convert between different units of length, you can use conversion factors. For example, to convert centimeters to meters, you divide the number of centimeters by 100 (since 1 m = 100 cm). Similarly, to convert meters to kilometers, you divide by 1,000 (1 km = 1,000 m). Use multiplication or division based on whether you are converting to a larger or smaller unit.
3. What is the significance of measuring length in science and daily activities?
Ans. Measuring length is crucial in science and daily activities because it helps us quantify and describe the size, distance, and dimensions of objects. In science, precise measurements are necessary for experiments, calculations, and understanding physical properties. In daily life, measuring length is essential for tasks such as cooking, construction, and tailoring.
4. What tools can be used to measure length accurately?
Ans. Various tools can be used to measure length accurately, including rulers, measuring tapes, calipers, and laser distance meters. Rulers are commonly used for short measurements, while measuring tapes are ideal for longer distances. Calipers provide precise measurements for small objects, and laser distance meters offer quick and accurate readings for larger distances.
5. How does motion relate to the measurement of length?
Ans. Motion relates to the measurement of length as it involves the change of position of an object over distance. To quantify motion, we often measure the distance traveled by an object over time. This allows us to calculate speed, which is the rate of change of distance. Understanding both length and motion is essential for studying physics and various real-life applications.
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