While choosing the most suitable scale for drawing a graph, we should keep the following points in mind Answer: Which one records the distance travelled by a vehicle? When the object is at rest, then the distance-time graph of an object is a horizontal line parallel to the axis of time. Hope you like them and do not forget to like , social share and comment at the end of the page. The correct symbol to represent the speed of an object is State the way through which we can prepare a pendulum by our own. Question 3. 7. (b) 6. All the clocks make use of some periodic motion. Therefore, it has a motion along a straight line. What is the distance moved by the car, if at 08:50 AM, the odometer reading has changed to 57336.0 km? Distance covered by the car = 15 km Question 5. at noon, shadow formed by the sun is shorter than at evening. 5. Answer: We can decide time of the day without clock by seeing shadow formed by the sun, e.g. Answer: Also please like, and share it with your friends! 6. (c) Only B Number 0T oscillations =20 Answers: (i) Motion of your hands while running. Answer: Question 13. Multiple-choice Questions: 1. All questions and answers from the Living Science Book of Class 7 â¦ Question 1. Question 7. While running, the hands move to and fro and repeat their motion after a given interval of time. Graph of object D Selina Publishers Concise Physics for Class 7 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines. Match the Columns 1. Answer: Answer: Metre/second is the basic unit of speed. It oscillates up-down. (a) x-axis (a) What will be the position of the object at 20 s? Question 8. Answer: Question 1. Answer: True The distance-time graph for a vehicle standing on a road side will be Time taken by the car =. An object can move with constant or variable speed. Science Class - VII. (b) 5 mp The distance-time graph for the motion of an object moving with a constant speed is a straight line inclined on x-axis at some angles. Did you find NCERT Solutions Class 7 Science chapter 13 Motion and Time helpful? Firstly, draw perpendicular lines from point E on x-axis and y-axis. We know that 1 h = 3600 s Answer: Nutrition in animals Important â¦ On which axis is dependent variable represented? Answer: Question 15. (vi) Straight line Periodic events are used for the measurement of time. So, total age in second = 378432000 + 7776000 = 386208000s. The circumference of the circle traced by the second hand is 64 cm. True Differentiate between uniform and non-uniform motion. Answer: All of sudden, a rickshaw came in front of her car but due to applying of brakes at the right time, both of them got safe from meeting with an accident. He started his journey from his home at 6 O’ clock on his bicycle and covered a distance of 6 km in 40 min. (b) Class 7 Motion and Time Answers: 1. Q3: A faster moving object â¦ Question 6. Question 14. Total time taken to complete 20 oscillations 32 s, Ans : Distance between the two stations = 240 km Free PDF download of Important Questions with solutions for CBSE Class 7 Science Chapter 13 - Motion and Time prepared by expert Science teachers from latest edition of CBSE(NCERT) books. Distance covered by the car (b) Mention a positive action performed by Priyanka here. If Boojho covers a certain distance in one hour and Paheli covers the same distance in two hours, who travels with a higher speed? Answer: Here we have given NCERT Class 7 Science Notes Chapter 13 Motion and Time. What can you say about the motion of the objects? Answer: State its S. I. unit. Prepared by teachers of the best CBSE schools in India. State the factors on which the time period of a simple pendulum depend. (a) 0.6 m/s (c) What is his speed between 8 to 12 min of his journey? (b) What will be the distance travelled by the object in 12 s? Answer: (b) A time interval of 30 s cannot be measured by clock B (ii) Not correct Answer: Answer: 2. (c) km/h. Time period of a pendulum depends on the length of the thread. Give the basic unit of speed. Question 1. A bus travels 54 km in 90 min. 2. NCERT 7th Class (CBSE) Science: Time and Motion â Quiz. State the condition under which the distance-time graph of an object is a horizontal line parallel to the axis of time. (a) 6 m/s. The motion of bob is non-uniform as it does not cover equal distance in equal intervals of time. NCERT Solutions Class 7 Science Chapter 13 Motion and Time. Answer: (v) Not correct Free Question Bank for 7th Class Science Time and Motion Motion and Time The following figure shows the distance-time graph for the motion of two objects D and E. Which one of them is moving slower? Question 5. 10. (a) State the benefit of a wristwatch. (b) 2(t1 + t2) 6. (a) By multiplying with 5/16 After few minutes, he saw a wristwatch on his study table, so after seeing it, he got crazy and so much in eager to play with that watch. Clock A has an hour and a minute hand whereas clock B has an hour hand, minute hand as well as a second hand. Class 7 Physics Motion and Time: Motion: Motion. (d) 5 s/m (iii) To utilise the maximum part of the paper on which the graph is to be drawn, assume that we have a graph paper of size 25 cm x 25 cm and we have to accommodate following data: Since, one of the scales will be Final reading of the odometer of the car = 57336.0 km Answer: Users can download and print the worksheets on class 7 Science Motion and Time for free. True Question 1. (c) straight line parallel to y-axis Answer: 3. bob 6. nanosecond (d) 3.6 â¦ Draw a diagram. (iii) Motion of a child in a merry-go-round. If you did not have a clock, how would you decide what time of the day is? Define speed. On reaching, he finds that the school is closed and comes back by a bicycle with his friend and reaches home in 20 min. Answers: MOTION AND TIME Q1.
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