[Q3] SCIENCE - LONG QUIZ
Q3 SCIENCE 6 LONG QUIZ
Test I. Direction: Encircle the letter of the correct answer.
1) What is the force that resists the motion of an object when it is in
contact with a surface?
A) Gravity
B) Friction
C) Velocity
D) Acceleration
A) It decreases
B) It increases
C) It remains the same
D) It becomes zero
3) Which type of friction occurs when an object is moving through a
fluid, like air or water?
A) Static friction
B) Rolling friction
C) Sliding friction
D) Fluid friction
4) When an object is on a flat surface and at rest, what is the
direction of the force of friction acting on it?
A) Upwards
B) Downwards
C) Towards the surface
D) Perpendicular to the
surface
5) What is the relationship between friction and the motion of an
object?
A) Friction always
causes an object to slow down
B) Friction always
causes an object to speed up
C) Friction can either
speed up or slow down an object, depending on the situation
D) Friction has no
effect on the motion of an object
6) What is the process called when energy changes from one form to
another?
A) Conversion
B) Transition
C) Transmission
D) Transformation
7) What is the form of energy associated with motion?
A) Kinetic energy
B) Potential energy
C) Thermal energy
D) Chemical energy
8) What is the form of energy that is stored in an object due to its
position or shape?
A) Kinetic energy
B) Potential energy
C) Thermal energy
D) Chemical energy
9)
What is the term used to describe the total amount of energy in a system that
is available to do work?
A) Kinetic energy
B) Potential energy
C) Thermal energy
D) Mechanical energy
10)
What is the term used to describe the process of converting sunlight into
energy that can be used by living organisms?
A) Photosynthesis
B) Cellular respiration
C) Digestion
D) Fermentation
11) Which simple machine is used to raise or lower a load?
A) Lever
B) Pulley
C) Inclined plane
D) Wheel and axle
12)
Which simple machine consists of a sloping surface that reduces the amount of
force needed to move an object?
A) Screw
B) Wedge
C) Lever
D) Inclined plane
13)
Which simple machine consists of a bar that is supported at a fixed point and
used to move a load with less force?
A) Lever
B) Pulley
C) Screw
D) Inclined plane
14)
Which simple machine consists of two circular objects of different sizes that
rotate together to move a load?
A) Screw
B) Wedge
C) Lever
D) Wheel and axle
15) Which simple machine consists of an inclined plane that is wrapped
around a cylinder?
A) Screw
B) Wedge
C) Lever
D) Pulley
16) Which of the following is an example of frictional force?
A) A ball rolling down
a hill
B) A car accelerating
on a flat road
C) A boat floating on a
calm lake
D) A sled sliding down
a snowy hill
17) How does the force of friction change when the surface becomes
rougher?
A) It decreases
B) It increases
C) It stays the same
D) It becomes zero
18) What type of friction occurs when an object moves through a liquid
or gas?
A) Static friction
B) Rolling friction
C) Sliding friction
D) Fluid friction
19) What is the law of conservation of energy?
A) Energy cannot be
created or destroyed, only transformed from one form to another
B) Energy can be
created but cannot be destroyed or transformed
C) Energy can be
destroyed but not created or transformed
D) Energy can be
transformed but not created or destroyed
20) What type of energy is stored in the bonds between atoms and
molecules?
A) Kinetic energy
B) Potential energy
C) Thermal energy
D) Chemical energy
21) How does the potential energy of an object change as it is lifted
higher off the ground?
A) It increases
B) It decreases
C) It stays the same
D) It becomes zero
22) What is the relationship between work and energy?
A) Work is a measure of
energy
B) Energy is a measure
of work
C) Work and energy are
not related
D) Work and energy are
the same thing
23) What type of energy is associated with the motion of molecules?
A) Thermal energy
B) Kinetic energy
C) Chemical energy
D) Nuclear energy
24) How does an inclined plane make work easier?
A) By increasing the
distance over which the force is applied
B) By decreasing the
distance over which the force is applied
C) By increasing the
amount of force applied
D) By decreasing the
amount of force applied
25) How does a pulley make work easier?
A) By increasing the
distance over which the force is applied
B) By decreasing the
distance over which the force is applied
C) By increasing the
amount of force applied
D) By decreasing the
amount of force applied
26)
A car is moving on a flat road at a constant speed. Which of the following
forces is acting on the car?
A) Gravitational force
only
B) Frictional force
only
C) Both gravitational
and frictional forces
D) Neither
gravitational nor frictional forces
27)
An object is being pulled to the right with a force of 20 N and to the left
with a force of 30 N. Which direction will the object move?
A) To the right with a
net force of 10 N
B) To the left with a
net force of 10 N
C) To the left with a
net force of 20 N
D) To the right with a
net force of 50 N
28)
ball is thrown straight up in the air. At what point in its path does the ball
experience zero velocity and maximum acceleration due to gravity?
A) At the highest point
of its path
B) At the start of its
path
C) At the end of its
path
D) Throughout its path
29) What happens to the mechanical energy of a moving car as it comes to
a stop?
A) It is destroyed
B) It is transformed
into thermal energy
C) It is transformed
into potential energy
D) It remains constant
30)
How does the efficiency of an energy conversion system change if energy is lost
as heat during the conversion process?
A) It increases
B) It decreases
C) It stays the same
D) It becomes zero
31) What type of energy is associated with the movement of electrons?
A) Thermal energy
B) Kinetic energy
C) Electrical energy
D) Chemical energy
32) How does the kinetic energy of an object change as its velocity
increases?
A) It decreases
B) It stays the same
C) It increases
D) It becomes zero
33) A light bulb converts electrical energy to what other form of
energy?
A) Thermal energy
B) Chemical energy
C) Potential energy
D) Mechanical energy
34)
How does the mechanical advantage of a lever change if the distance between the
fulcrum and the point where force is applied decreases?
A) It increases
B) It decreases
C) It stays the same
D) It becomes zero
35)
How does the mechanical advantage of a pulley change if the number of
supporting ropes increases?
A) It increases
B) It decreases
C) It stays the same
D) It becomes zero
36.
An object with a mass of 10 kg is sliding across a surface with a coefficient
of friction of 0.5. What is the force of friction acting on the object?
A) 5 N
B) 10 N
C) 50 N
D) 100 N
37) A toaster uses electrical energy to transform bread into toast. This
is an example of:
A) Nuclear energy
B) Thermal energy
C) Chemical energy
D) Radiant energy
38)
A light bulb is powered by a battery. As the light bulb produces light, what
happens to the battery's chemical energy?
A) It is transformed
into electrical energy
B) It is transformed
into radiant energy
C) It is transformed
into thermal energy
D) It remains unchanged
39)
A rollercoaster at the top of a hill has a large amount of potential energy. As
it travels down the hill, what type of energy is it transformed into?
A) Kinetic energy
B) Radiant energy
C) Chemical energy
D) Nuclear energy
40)
A student needs to lift a heavy box onto a shelf that is too high for them to reach.
Which simple machine could help the student lift the box?
A) Lever
B) Pulley
C) Wheel and axle
D) Inclined plane
41) Which of the following is the most effective way to reduce friction
in a system?
a) Increase the weight
of the object
b) Increase the surface
area of the object
c) Decrease the weight
of the object
d) Decrease the surface
area of the object
42) Which of the following energy sources is the most sustainable in the
long term?
a) Fossil fuels
b) Nuclear power
c) Solar power
d) Hydroelectric power
43)
Which of the following is the most efficient method for converting potential
energy to kinetic energy?
a) A rollercoaster
climbing a hill
b) A car accelerating
from a stop
c) A ball rolling down
a ramp
d) A pendulum swinging
back and forth
44) Which of the following energy conversions is the most efficient?
a) Electrical energy to
mechanical energy
b) Thermal energy to
electrical energy
c) Mechanical energy to
thermal energy
d) Chemical energy to
electrical energy
45) Which of the following simple machines would be most effective for
lifting a heavy object?
a) Inclined plane
b) Lever
c) Pulley
d) Wedge
46)
Design an experiment to determine the effect of surface area on the amount of
friction between two surfaces. Which of the following is the most appropriate
variable to manipulate in this experiment?
a) The weight of the
object
b) The texture of the
surfaces
c) The surface area of
the object
d) The speed of the
object
47)
Design a system that converts wind energy into electrical energy. Which of the
following components is essential to this system?
a) A turbine
b) A battery
c) A generator
d) A resistor
48)
Design a device that converts mechanical energy into thermal energy. Which of
the following materials would be the most effective for this device?
a) Copper
b) Aluminum
c) Steel
d) Plastic
49)
Design a machine that uses simple machines to lift a heavy object. Which of the
following simple machines would be the most effective for this task?
a) Wheel and axle
b) Lever
c) Wedge
d) Pulley
50)
Design a system that uses a pulley to lift a heavy object. Which of the
following factors would have the greatest effect on the amount of force
required to lift the object?
a) The weight of the
object
b) The length of the
rope
c) The number of
pulleys used
d) The angle of the rope
ANSWER KEY:
Here are the correct answers for each question:
1) B) Friction
2) B) It increases
3) D) Fluid friction
4) C) Towards the surface
5) A) Friction always causes an object to slow down
6) D) Transformation
7) A) Kinetic energy
8) B) Potential energy
9) D) Mechanical energy
10) A) Photosynthesis
11) B) Pulley
12) D) Inclined plane
13) A) Lever
14) D) Wheel and axle
15) A) Screw
16) D) A sled sliding down a snowy hill
17) B) It increases
18) D) Fluid friction
19) A) Energy cannot be created or destroyed, only transformed from one form to another
20) D) Chemical energy
21) A) It increases
22) A) Work is a measure of energy
23) A) Thermal energy
24) A) By increasing the distance over which the force is applied
25) C) By increasing the amount of force applied
26) C) Both gravitational and frictional forces
27) B) To the left with a net force of 10 N
28) A) At the highest point of its path
29) A) It is destroyed
30) B) It decreases
31) C) Electrical energy
32) C) It increases
33) A) Thermal energy
34) B) It decreases
35) A) It increases
36) C) 50 N
37) B) Thermal energy
38) A) It is transformed into electrical energy
39) A) Kinetic energy
40) B) Pulley
41) b) Increase the surface area of the object
42) c) Solar power
43) c) A ball rolling down a ramp
44) b) Thermal energy to electrical energy
45) c) Pulley
46) c) The surface area of the object
47) c) A generator
48) a) Copper
49) d) Pulley
50) c) The number of pulleys used
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