Competency based questions Class 4 Science
DPS Guwahati (CBSE Affiliated School) has recently published Competency based questions for the students of class 4. Here in this page we have given class 4 science competency based questions provided by DPS Guwahati school.
(1) Find the odd one out.
(a) elevators
(b) wells
(c) flagpoles
(d) axe
Ans: (d) axe
(2) Pulley and lever are called simple machines as they:
(a) Aid human efforts by acting as force multipliers
(b) Are simple to arrange and operate
(c) Do not comprise of several internal components
(d) Are not machines
Ans: (b) Are simple to arrange and operate
(3) In a high rise building there is an arrangement to pull small packets up various floors. In the arrangement a rope straddles across and down a wheel which is fixed in a wall. The rope is supporting a basket at its one end while the other end is tethered to the handle of the recipient flat.
The system is such that when the rope is tugged from the handle’s end it moves up and down the basket attached to it.
(a) The system comprises of a lever as well as a pulley.
(b) The system is an example only of an pulley system.
(c) The system employs neither pulley or lever but is simply a vertical uplift arrangement.
(d) The wheel system is an example of pulley while the attached basket is an example of lever.
Ans: (b) The system is an example only of an pulley system.
(4) Find the wrongly matched
(a) Pulley- flagpole
(b) Inclined plane- ramp
(c) Lever- sea saw
(d) Wedge- flagpole
Ans: (d) Wedge- flagpole
(5) In which of the following will a wheel Definitely be present?
(a)
(b)
(c)
(d)
Ans: A
(6) The length of this pencil is about__________.
(a) 4 cm
(b) 5 cm
(c) 6 cm
(d)7 cm
Ans: (b) 5 cm
(7) Students of a class were given two objects and asked to find out which was heavier. Here are some suggestions – which is the best?
(a) Put the objects one by one into a bucket filled with water. The one that sinks is heavier.
(b) Place the objects one on each palm. Estimate which one feels heavier. That is heavier.
(c) Put both the objects on a table. Identify the object that looks big. This is the object that is heavier.
(d) Tie each object to the ends of a ruler and balance at the mid point. One that goes down is heavier.
Ans: (d) Tie each object to the ends of a ruler and balance at the mid point. One that goes down is heavier.
(8) Which of the following best represents the example of pulley?
(a)
(b)
(c)
(d)
Ans: B
