Chapter 8: Measurement of Time and Motion — Online MCQ Test
SCIENCE (CURIOSITY) · CLASS 7th · Karnataka State Board
Practice Chapter 8: Measurement of Time and Motion with a free chapter-wise online MCQ test.
This chapter covers: Time Motion Speed Distance Stopwatch Clock Distance time graph Uniform motion Non uniform motion Measurement.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 8: Measurement of Time and Motion — Important Questions & Answers
Which instrument is used to measure short intervals of time accurately in a science laboratory?
- A. Clock
- B. Stopwatch
- C. Thermometer
- D. Balance
Answer: B. Stopwatch
A stopwatch is used to measure short time intervals accurately, such as the time taken by a toy car to move a certain distance.
A stopwatch is used to measure short time intervals accurately, such as the time taken by a toy car to move a certain distance.
What do we call the movement of an object along a fixed path?
- A. Motion
- B. Force
- C. Pressure
- D. Volume
Answer: A. Motion
Motion means change in position of an object with time. Movement along a path is one form of motion.
Motion means change in position of an object with time. Movement along a path is one form of motion.
Which statement best describes non-uniform motion?
- A. Object covers equal distances in equal intervals of time
- B. Object remains at rest forever
- C. Object covers unequal distances in equal intervals of time
- D. Object moves only in a straight line
Answer: C. Object covers unequal distances in equal intervals of time
In non-uniform motion, the speed changes, so the object covers unequal distances in equal intervals of time.
In non-uniform motion, the speed changes, so the object covers unequal distances in equal intervals of time.
A student says, 'A moving object always has a curved distance-time graph.' Which of the following is correct?
- A. The statement is always true
- B. The statement is true only for uniform motion
- C. The statement is false because uniform motion gives a straight line graph
- D. The statement is true only for rest
Answer: C. The statement is false because uniform motion gives a straight line graph
A moving object can have a straight-line graph if it moves with uniform speed. A curved graph usually shows non-uniform motion.
A moving object can have a straight-line graph if it moves with uniform speed. A curved graph usually shows non-uniform motion.
Which option correctly distinguishes a clock from a stopwatch?
- A. A clock measures short intervals more accurately than a stopwatch
- B. A stopwatch is used to show the current time of day
- C. A clock shows time of day, while a stopwatch measures time intervals
- D. Both are used only to measure distance
Answer: C. A clock shows time of day, while a stopwatch measures time intervals
A clock tells the time of day, whereas a stopwatch is used to measure the duration of an event.
A clock tells the time of day, whereas a stopwatch is used to measure the duration of an event.