Class 6 Science Chapter 10 MCQ Online Tests for 2021-2022
| Class: 6 | Science |
| Chapter: 10 | Motion and Measurement of Distances |
| Contents: | MCQ Online Tests with Answer |
Class 6 Science Chapter 10 MCQ Test with Answers
Q1
Priya is writing some statements, choose the correct statement and help him:
[A]. if an object moves fairly fast, then its movement or motion cannot be observed easily.
[B]. if an object moves very slowly, then it becomes very easy to observe its movement immediately.
[C]. When an object is stationary it is said to be stationary motion.
[D]. None of the above.
Answer: Option D
Explanation: Here, are all the statements are incorrect. Hence, your answer will be option [D].
In option [A]: If an object moves fairly fast, then its movement or motion can be observed easily.
In option [B]: If an object moves very slowly, then it becomes very difficult to observe its movement immediately.
In option [C]: When an object is stationary it is said to be at rest.
Q2
One of the following types of motion will not be exhibited by the moon moving around the earth. This one is:
[A]. Rotational motion
[B]. Rectilinear motion
[C]. Circular motion
[D]. Periodic motion
Answer: Option B
Explanation:Motion in a straight line is called rectilinear motion. In other words, when an object moves along a straight-line path it is called rectilinear motion.
The motion will not be exhibited by the moon moving around the earth is rectilinear motion. And rest of three motions are exhibit by the moon.
Q3
Bikash is doing his homework which is given by his teacher. Would you help him to choose the correct sentences?
[A]. When an object moves along a circular path, it is called circular motion.
[B]. The movement of artificial satellites around the earth is also circular motion.
[C]. The movement of earth around the sun is also an example of circular motion.
[D]. All the above.
Answer: Option D
Explanation:Here, are all the statements are correct. Hence, your answer will be option [D].
Q4
A communication satellite is stationed in an orbit high above the earth. Which of the following will not be exhibit by this communication satellite?
[A]. Rotational motion and Periodic motion
[B]. Periodic motion and Circular motion
[C]. Rotational motion and Rectilinear motion
[D]. Periodic motion and Circular motion
Answer: Option C
Explanation:A communication satellite is stationed in an orbit high above the earth which shows three types of motion rotational motion, periodic motion and circular motion but not exhibit rectilinear motion.
Q5
[A]. Rotational motion and Rectilinear motion
[B]. Rectilinear motion and Circular motion
[C]. Rotational motion and Circular motion
[D]. Rectilinear motion and Periodic motion
Answer: Option A
Explanation:When a ball is moving on the ground, it is rotating as well as moving forward on the ground. So, a ball rolling on the ground has two types of motion, rotational motion as well as a rectilinear motion.
Q6
Consider the following statements and choose the incorrect one:
[A]. Motion of an object or a part of it around a fixed point is known as axis motion.
[B]. A body repeating its motion after certain interval of time is in periodic motion.
[C]. In rectilinear motion object moves along a straight line
[D]. The SI unit of length is meter.
Answer: Option A
Explanation:Motion of an object or a part of it around a fixed point is known as circular motion.
Note: In circular motion an object moves such that its distance from a fixed point remains the same.
Q7
Three students measure the length of a corridor and reported their measurement. The values of their measurement with different. What could be the correct reason:
[A]. Their scales of measurement may not be standard or they may be using different scales of measurement.
[B]. The length of the scale may not be proper, i.e., the length of scale may be shorter than the length they want to measure.
[C]. There may be some errors in the skill which they are using or they may not be using the correct method of observing the scale.
[D]. All the above.
Answer: Option D
Explanation:All the reasons are correct. Hence, your answer will be option [D].
Q8
Read the following sentences carefully, and choose the incorrect one:
[A]. Transport means to carry people and goods from one place to another.
[B]. People learnt to join together plank on wood to make boats having a streamlined shape.
[C]. The invention of wheel made a great change in the modes of transport.
[D]. In the beginning of 18th century, the invention of steam engine introduced a new source of power to run transport vehicles.
Answer: Option D
Explanation:In the beginning of 19th century, the invention of steam engine introduced a new source of power to run transport vehicles. Steam engines were used to pull trains on railroads or railway tracks for carrying people and goods from one place to another. Steam engines were also used to run ships in the beginning. The steam engine is called external combustion engine because the fuel or coal for making steam was burnt outside the engine.
Q9
Devesh appeared in class test but he confused to know the incorrect statement. Would you help him to know that?
[A]. The invention of internal combustion engine in the second half of 19th century gave us transport vehicles called automobiles.
[B]. Aero-planes where developed as a means of transport in the early 20th century.
[C]. The length of the space between two points or two places is called distance.
[D]. Compass (navigation) is invented by Egyptian.
Answer: Option D
Explanation:The compass was invented in China during the Han Dynasty between the 2nd century BC and 1st century AD where it was called the “south-governor”. The Chinese first used compasses not for navigation, but for spiritual purposes. They used the magnetic devices to organize buildings and other things according to feng shui, the ancient practice of harmonizing an environment according to the “laws of Heaven.”
Q10
Read the following sentences carefully, and choose the incorrect one:
[A]. A car moving in a straight line is an example of a linear motion.
[B]. Motion of blades of fan is an example of circular motion.
[C]. Rotation of earth on its axis is an example of rotatory motion.
[D]. None of the above.
Answer: Option D
Explanation:Here, are all the statements are correct. Hence, your answer will be option [D].
What do you mean by “one oscillation”, “vibratory motion” and “random motion”?
One complete cycle from the point of release to the other extreme and back to the initial point is called one oscillation. A very fast back and forth motion is called vibratory motion. When a body moves in different direction and does not have a fixed path, it is called random motion.
How many types of motion is exhibited by the earth moving around the sun?
The earth moves around the sun, so it has circular motion. The earth repeats its motion around the sun after regular intervals of time after one year. So, it has periodic motion and the earth rotates on its axis, so it has also rotational motion. Thus, the earth has three types of motion at the same time, circular motion, periodic motion and rotational motion.
Can you write, one differences between “circular motion” and “rotational motion”.
The difference between circular motion and rotational motion is that in circular motion an object as a whole travel along a circular path but in rotational motion, the object spins on its axis.
How many types of motion exhibited by the sewing machine?
The sewing machine has a wheel which rotates on its axle. So, the wheel of a sewing machine shows rotational motion. The sewing machine has also a needle which moves up and down continuously. The needle of sewing machine undergoes a periodic motion. Thus, a sewing machine exhibits two types of motion at the same time, rotational motion as well as periodic motion.
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