Practice the AP 7th Class Science Bits with Answers Chapter 5 Motion and Time on a regular basis so that you can attempt exams with utmost confidence.
AP 7th Class Science Bits Chapter 5 Motion and Time with Answers
I. Multiple Choice Questions
1. The number of satellites launched in a single rocket and created a world record by ISRO.
A) 20
B) 104
C) 99
D) 100
Answer:
B) 104
2. SDSC – SHAR is located in
A) Chittoor
B) Nellore
C) Ananthapur
D) Guntur
Answer:
B) Nellore
3. The use of Rocket
A) to launch a space cratt
B) to launch a satellite
C) to shoot a missile
D) all
Answer:
D) all
4. The man made object around the earth is
A) Moon
B) Artificial satellite
C) Comet
D) Meteor
Answer:
B) Artificial satellite
5. An object is said to be in motion if……….
A) it changes its position with respect to its surroundings.
B) it does not changes its position with respect to its surroundings.
C) it changes the position of its particles with in the object.
D) till the above
Answer:
A) it changes its position with respect to its surroundings.
6. Force is required
A) to change the object from rest into motion
B) to change its direction
C) to change from motion to rest
D) all the above
Answer:
D) all the above
7. The total length of the path travelled by an object between two places is called….
A) Displacement
B) Speed
C) Distance
D) Track
Answer:
C) Distance
8. S.I units of distance is
A) Centimeter
B) Metre
C) Kilometre
D) Miles
Answer:
B) Metre
9. Hie shortest distance between two places along the straight-line path is called…
A) Displacement
B) Speed
C) Distance
D) Track
Answer:
A) Displacement
10. The basic unit of time is.
A) Minute
B) Second
C) Hour
D) All the above
Answer:
B) Second
11. Find the correct statement
i) 365 days is a year
ii) 100 year is a decade
A) both are correct
B) i only correct
C) ii only correct
D) both are wrong
Answer:
B) i only correct
12. These are used to measure shorter time intervals between two events accurately.
A) Wall clock
B) Sand clock
C) Stop clocks
D) Water clock
Answer:
C) Stop clocks
13. The time taken by the earth to complete one revolution around the sun.
A) Day
B) Month
C) Year
D) Hour
Answer:
C) Year
14. A mean solar day contains
A) 24 days
B) Year
C) 24 minutes
D) 24 hours
Answer:
D) 24 hours
15. If all points of a moving object move through the same distance in same direction, then the motion is said to be.
A) Translator motion
B) Rotatory motion
C) Oscillatory motion
D) All the above
Answer:
A) Translator motion
16. Find the odd one
A) coconut falling from a tree
B) movement of lift
C) motion of light rays
D) movement of body of snake
Answer:
D) movement of body of snake
17. If all the parts of a moving body follow a curved path with respect to a fixed centre or axis of rotation, it is said to be in …..
A) Translatory motion
B) Rotatory motion
C) Oscillatory motion
D) All the above
Answer:
B) Rotatory motion
18. Which of the following is not in rotatory motion?
A) Fan
B) Top
C) Cycle chain
D) Cycle wheel
Answer:
C) Cycle chain
19. Motion of cycle tyre
A) Translatory motion
B) Rotatory motion
C) Oscillatory motion
D) A & B
Answer:
C) Oscillatory motion
20. Sewing machine wheel :Rotatory motion :: Sewing machine needle : ?
A) Translatory motion
B) Rotatory motion
C) Oscillatory motion
D) All the above
Answer:
C) Oscillatory motion
21. The ’to and fro’ motion of an object about a fixed point that always following the samepath is called
A) Translatory motion
B) Rotatory motion
C) Circulatory motion
D) Oscillatory motion
Answer:
D) Oscillatory motion
22. In this motion, the direction of motion of the objects changes alternatively along the same path about a fixed point.
A) Translatory motion
B) Rotatory motion
C) Oscillatory motion
D) None of these
Answer:
C) Oscillatory motion
23. Uniform motion : Minute hand in a wall clock:: Non uniform motion: ?
A) Movement of butterfly
B) Revolution of Earth
C) A train going at a steady speed
D) The blades of a fan
Answer:
A) Movement of butterfly
24. What we need to know to decide whether{he motion is slow or fast?
A) distance covered
B) time taken
C) direction of motion
D) A & B
Answer:
A) distance covered
25. Odometer shows……
A) Speed of the vehicle
B) Distance travelled by the vehicle
C) Direction of the vehicle
D) A & B
Answer:
B) Distance travelled by the vehicle
26. The Speedometer shows
A) Speed of the vehicle
B) distance travelled by the vehicle
C) Direction of the vehicle
D) A & B
Answer:
A) Speed of the vehicle
27. The Speedometer shows the speed in……
A) m/s
B) km/s
C) m/h
D) km/h
Answer:
D) km/h
28. At a particular instant of time, we can find speed of a vehicle using
A) Odometer
B) Barometer
C) Speedometer
D) Both A & C
Answer:
C) Speedometer
29. 1 Km/h = ?
A) 5/60 m/s
B) 5/18 m/s
C) 60/5 m/s
D) 18/5 m/s
Answer:
B) 5/18 m/s
30. Satish Dhawan Space Centre (SDSC – SHAR) is located in this district
A) SPSR Nellore
B) Guntur
C) Chittoor
D) East godavari
Answer:
A) SPSR Nellore
II. Fill in the blanks
1. The ……………… by an object in a given interval of time can helps to decide whether it is faster or slower.
2. ……………… of an object can be defined as the distance travelled by it in a unit time.
3. Present chairman of iSRO ……………… .
4. ……………… are the devices that produce force or push to move an object forward into the space.
5. The movement of rocket is in a ……………… motion.
6. The movement of artificial satellites is in ……………… motion.
7. An object is said to be in ……………… if it changes its position with respect to its surroundings.
8. An object is said to be at ……………… if there is no change in its position with respect to its surroundings.
9. ……………… makes an object to move or tendio move.
10. The total length of the path travelled by an object between two places is called ……………… .
11. The basic unit of distance is ……………… .
12. S.I units of distance is ……………… .
13. The length of the straight-line path which is the shortest distance between two places is called ……………… .
14. The measurable period between two incidents is called ……………… .
15. The basic unit’of time is ……………… .
16. 1 minute = ……………… seconds
17. 10 years : 1 ………………
18. ……………… arA the most common time measuring devices.
19. ……………… are used to measure shorter time intervals between two events accurately.
20. The time between one new moon to the next is ……………… .
21. If all points of a moving object move through the same distance in same direction, then the motion is said to be ……………… .
22. If a body in translatory motion moves along a straight line then the motion is called ……………… .
23. If a body in translatory motion move along a curved path then the motion is called ……………… .
24. The motion of light rays is ……………… .
25. The movement of body of snake is in ……………… motion.
26. If all the parts of a moving body follow a curved path with respect to a fixed centre or axis of rotation, it is said to be in ……………… .
27. The imaginary line passing through the fixed centre is called ……………… .
28. ……………… is a special type of rotatory motidn, where the distance between the object and the axis of rotation remains fixed.
29. The to and fro’ motion of an object about a fixed point that always following the same path is called ……………… .
30. If a body covers equal distances in equal intervals of time, it is said to be in ……………… .
31. If a body covers unequal distances in equal intervals of time, it is said to be in ……………… .
32. The distance travelled by an object in a unit time is called ……………… .
33. ……………… shows the distance travelled by a vehicle.
34. At a particular instant of time, we can find speed of a vehicle using ……………… .
35. 1 Km / h = ……………… m/s
36. In a distance time graph, distance is usually plotted along ……………… axis, while time is usually plotted along
37. If the distance-time graph is a straight line, it indicates that the object is moving with ……………… .
38. From the distance-time graph we can find the ……………… of object.
39. Indian Space Research Organization, formed in ……………… .
40. ISRO maintains ……………… satellite for fast and reliable communication.
41. ISRO maintains remote sensing IRS satellites for ……………… .
42. On 18th June 2016 ISRO launched ……………… satellites in a single vehicle.
43. On 15th February 2017 ISRO launched ……………… satellites in a single rocket.
44. Satish Dhawan Space Centre (SDSC – SHAR) is located in ……………… .
Answer:
- distance travelled
- Speed
- K. Sivan
- Rockets
- translatory
- rotatory
- motion
- rest
- Force
- distance
- centimeter
- metre
- displacement
- time.
- second
- 60
- decade
- Clocks /watches
- Stop clocks
- month
- translatory motion
- rectilinear motion
- curvilinear motion.
- rectilinear motion
- curvilinear
- rotatory motion.
- axis of rotation motion
- Circular motion
- oscillatory or vibratory
- uniform motion
- non-uniform motion
- Speed
- Odometer
- speedometer
- 5/18
- Y-axis or the vertical, X-axis or the horizontal
- a constant speed
- speed
- 1969
- INSAT
- earth observation
- 20
- 104
- Sriharikota
III. Match the following
1.
| Group – A | Group – B |
| A) Tree | 1) Oscillatory motion |
| B) Butterfly | 2) Curvilinear motion chine |
| C) Needle of a sewing ma | 3) Rotatory motion |
| D) Light ray | 4) Rectilinear motion |
| E) Wheel of a machine | 5) Rest |
Answer:
| Group – A | Group – B |
| A) Tree | 5) Rest |
| B) Butterfly | 2) Curvilinear motion chine |
| C) Needle of a sewing ma | 1) Oscillatory motion |
| D) Light ray | 4) Rectilinear motion |
| E) Wheel of a machine | 3) Rotatory motion |
2.
| Group – A | Group – B |
| A) Force | 1) The total length of the path travelled |
| B) Distance | 2) The distance travelled by an object in a unit time. |
| C) Displacement | 3) Cause of Motion |
| D) Time | 4) Motion in a fixed path |
| E) Speed | 5) The length of the straight-line path. |
| 6) The measurable period between two incidents. |
Answer:
| Group – A | Group – B |
| A) Force | 3) Cause of Motion |
| B) Distance | 1) The total length of the path travelled |
| C) Displacement | 5) The length of the straight-line path. |
| D) Time | 6) The measurable period between two incidents. |
| E) Speed | 2) The distance travelled by an object in a unit time. |
3.
| Group – A | Group – B |
| A) Curvilinear motion | 1) Motion of strings of veena |
| B) Non-uniform motion | 2) Motion of a snake |
| C) Oscillatory motion | 3) Motion of light ray |
| D) Rotatory motion | 4) Movement of minutes hand in a clock |
| E) Rectilinear motion | 5) Directional motion |
| 6) Motion of butterfly in a graden |
Answer:
| Group – A | Group – B |
| A) Curvilinear motion | 2) Motion of a snake |
| B) Non-uniform motion | 6) Motion of butterfly in a graden |
| C) Oscillatory motion | 1) Motion of strings of veena |
| D) Rotatory motion | 4) Movement of minutes hand in a clock |
| E) Rectilinear motion | 3) Motion of light ray |
4.
| Group – A | Group – B |
| A) Speedometer | 1) Meters/Second |
| B) Odometer | 2) Direction of the vehicle |
| C) Speed | 3) Distance travelled |
| D) Time | 4) Centimetres |
| E) Distance | 5) Speed of a vehicle |
| 6) Seconds |
Answer:
| Group – A | Group – B |
| A) Speedometer | 5) Speed of a vehicle |
| B) Odometer | 3) Distance travelled |
| C) Speed | 1) Meters/Second |
| D) Time | 6) Seconds |
| E) Distance | 4) Centimetres |