WorksheetsAvengers: End Game
Total questions: 61
Worksheet time: 47mins
Two boys A and B are applying force on a block. If the block moves towards the boy A, which one of the following statements is correct?
Magnitude of force applied by A is greater than that of B.
Magnitude of force applied by A is smaller than that of B.
Net force on the block is towards B.
Magnitude of force applied by A is equal to that of B.
When two forces act in opposite directions, then net force acting is the
difference between two forces
sum of two forces
both of these
none of these
Which of the following is proper example(s) to explain that force on an object may change its shape
A ball of dough rolled into chapati
Pressing a plastic ball kept on table
Making model using clay
All of the above
An example of a non- contact force is
Force exerted by us to lift a bucket
Push a stationary car
Force exerted by magnet
Hit a cricket ball for a 6 run
Students roll toy cars down the same ramp with different coverings like carpet, foil, and sandpaper. What are they trying to test?
How does the height of a ramp affect the distance a car will roll?
How does the mass of the car affect the distance a car will roll?
How does the surface of a ramp affect how fast a car will travel?
How does the surface of a ramp affect the distance a car will roll?
Watch the green man skating. Choose all options that are correct.
Both Contact and Non-Contact forces acting here.
Non-Contact force is only acting here.
Rolling Friction and Gravitational Force are present.
Sliding Friction and Gravitational Force are present.
Which sentence is the MOST RIGHT fit for this image?
Flat shoes are better than heels.
Pressure distribution is less for flat shoes.
In muddy area, it's not a good idea to wear heels.
Less the area, less is the pressure. So heels create less pressure.
When you increase your depth under water, the water pressure on your body
increases
decreases
stays the same
Which of the following is NOT an example of friction?
using the brakes on your bike to slow you down
putting your hand out the window
a satellite traveling through deep space
a hockey puck going across an ice rink
This car is turning, but there’s a puddle of water in the road. Which diagram best shows how the puddle will affect the path of the car after it hits the puddle?
Which of the following statements is false?
Friction can only slow things down
Friction is never useful
Friction can stop things from moving
Only solids can produce friction
true
false
The amount of sliding friction depends on which things?
acceleration
type of surface
weight of the moving object
the rotundness of the man on the pogo stick
Which of the following is not used to reduce friction
wheels
sandpaper
bumpy rocks
bacon grease
What is sliding friction?
friction between two surfaces that aren't moving relatively to each other
friction between a rolling object and the surface that it is rolling on
friction where an object rubs against another surface
friction of something going through any type of liquid or air
How could you reduce fluid friction?
add bacon grease to the object
streamline the object
add sandpaper to the object
make the object heavier
How could you reduce sliding friction?
add wheels to the object
add bacon grease to the object
add glue to the object
add motor oil to the object
add bearings to the object
Friction is an example of _____________
contact force
non contact force
both of these
none of these
Frictional force depends on ____
surface area in contact
roughness of surface
both a and b
none of the above
How would the absence of friction affect a marble travelling on a long, straight path?
the marble's speed would decrease
the marble would remain at a constant speed
the marble's speed would increase
the marble would stop immediately
Electic current is the flow of particles with ___________.
a negative charge
a positive charge
both positive and negative charges flowing opposite to each other.
either positive or negative charge depending on the material.
An electrolyte is a _____________.
Solid that conducts electricity
Liquid that conducts Electricity
Liquid that does not conduct electricity
Solid that does not conduct electricity
Which of the following is not a conductor of electricity?
Tap water
Salt water
Petrol
Lime juice
On passing electricity through copper sulphate solution.
Copper is formed at anode
Copper is formed at cathode
Oxygen is formed at anode
hydrogen is formed at cathode
Which of these metals will you electoplate on iron to protect it from rusting and to make it shine?
Copper
Gold
Zinc
Chromium
During electroplating, copper is deposited at the (a)
When electricity is passed through tap water, the gases ________ and _________ are envolved.
(a)
Choose insulator from the following:
Distilled water
Plastic
Wood
All of them
An (a) is an atom or molecule with an electric charge created by loss or gain of electrons.
The filament of the bulb gets heated to a high temperature due to the
magnetic effect of current
heating effect of current
chemical effect of current
all of these
LED stands for
light emitting diode
light efficient diode
length emitting diode
light emitting device
Adding common salt to distilled water makes it
Good Conductor
Poor Conductor
No change
Both A and B
An electrolyte is
a metal
a solution
a liquid that conducts electricity
none of these
Which one of the following solutions will not conduct electricity?
lemon juice
vinegar
tap water
vegetable oil
The object to be electroplated is taken as ____________ electrode.
cathode
anode
electrode
none of these
The glowing of filament bulb is due to
Chemical effect of current
magnetic effect of current
Physical effect of electric current
Heating effect of electric current
You perform an experiment taking similar bulbs and cells but two different solutions A and B. You find that the bulb in the setup A glows more brightly as compared to that of the setup B. You would conclude that
higher current is flowing through the circuit in setup A
higher current is flowing through the circuit in setup B
equal current is flowing through both the circuits
No conclusion
Which of the following does not conduct electricity?
Sugar solution
Vinegar solution
Lemon juice solution
Caustic soda solution
Which of the following is a bad conductor of electricity?
Distilled water
Silver nitrate
Sulphuric acid
Copper sulphate
Which of these is plated on the iron to prevent it from chemically reacting with food?
Gold
Chromium
Tin
Zinc
Electroplating prevents
electric current
chemical effect
lightening
rusting
Ridhima wants to electroplate a plate with ZINC. She has a Zinc bar and the plate. But she does not know which should be the anode and which should be the cathode.
Zinc Bar - Anode, Plate - Cathode
Zinc Bar - Cathode, Plate - Anode
Both Anode and Cathode should be Zinc
________ is a reflected sound.
Vibration
Echo
Pitch
Volume
Area of a longitudinal wave where particles are APART.
Compression
Rarefaction
Refraction
Compassion
Convex lens is used to correct this defect.
(a)
which colour bends the most on refraction through a triangular prism?
red
blue
green
violet
